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Articles 1411 - 1440 of 10753

Full-Text Articles in Botany

Genetic Diversity Of The Critically Endangered Ferula Sinkiangensis K.M.Shen (Apiaceae) And The Implications For Conservation, Wenjun Li, Zhihao Su, Lei Yang, Qiumei Cao, Ying Feng Jan 2020

Genetic Diversity Of The Critically Endangered Ferula Sinkiangensis K.M.Shen (Apiaceae) And The Implications For Conservation, Wenjun Li, Zhihao Su, Lei Yang, Qiumei Cao, Ying Feng

Turkish Journal of Botany

Research on the genetic diversity and structures of endangered plant species with small population sizes is a prerequisite for developing reasonable conservation strategies. Ferula sinkiangensis K.M.Shen is a critically endangered herbaceous perennial and monocarpic medical plant growing in semiarid steppe ecosystems with a small population size within the Yili Valley in Xinjiang, China. Unfortunately, the lack of genetic information has limited our ability to initiate effective conservation strategies for the species. In this study, 14 polymorphic microsatellite primers of F. sinkiangensis were developed and characterized using Illumina HiSeq paired-end reads from genomic DNA. Primers were used to assess the genetic …


Termitomyces Sheikhupurensis Sp. Nov. (Lyophyllaceae, Agaricales) From Pakistan, Evidence From Morphology And Dna Sequences Data, Aiman Izhar, Abdul Nasir Khalid, Hira Bashir Jan 2020

Termitomyces Sheikhupurensis Sp. Nov. (Lyophyllaceae, Agaricales) From Pakistan, Evidence From Morphology And Dna Sequences Data, Aiman Izhar, Abdul Nasir Khalid, Hira Bashir

Turkish Journal of Botany

A new symbiotic species from genus Termitomyces, is proposed here supported by morphological features and molecular evidence. The species is characterized by an annual growth, pileus with velar remnants, ruptured margins, pubescent stipe with short pseudorhiza, basidia varying in wall thickness, polymorphic cheilo- and pleurocystidia as well as two types of pileipellis hyphae. Sequences of nr ITS and LSU regions of newly reported species nested as a separate taxon in both phylogenetic analyses of current study.


Phylogenetic And Biogeographical History Confirm The Anatolian Origin Of Bornmuellera (Brassicaceae) And Clade Divergence Between Anatolia And The Balkans In The Plio-Pleistocene Transition, Bariş Özüdoğru, Klaus Mummenhoff Jan 2020

Phylogenetic And Biogeographical History Confirm The Anatolian Origin Of Bornmuellera (Brassicaceae) And Clade Divergence Between Anatolia And The Balkans In The Plio-Pleistocene Transition, Bariş Özüdoğru, Klaus Mummenhoff

Turkish Journal of Botany

Understanding disjunct distribution patterns in the Balkan Peninsula and Anatolia is important in order to reconstruct robust biogeographical hypotheses. This is instrumental in understanding the recolonization patterns of Europe during the Quaternary glaciation/interglaciation periods and the potential role of Anatolia as a refugium. Unfortunately, only a few studies have been conducted to uncover such processes. Here, we used all eight species of the genus Bornmuellera (Brassicaceae) with a scattered distribution in the Balkans and Anatolia to reconstruct its biogeographic history. We applied nuclear internal transcribed spacer (ITS) and plastid trnL-F regions and showed that 1) Bornmuellera is monophyletic and, 2) …


Evaluating The Impact Of Grafting On Local Tomato Production In Nebraska, Raihanah Hassim, Samuel E. Wortman, Ashley A. Thompson, Stacy A. Adams Jan 2020

Evaluating The Impact Of Grafting On Local Tomato Production In Nebraska, Raihanah Hassim, Samuel E. Wortman, Ashley A. Thompson, Stacy A. Adams

Department of Agronomy and Horticulture: Dissertations, Theses, and Student Research

Grafting has been successfully used in vegetable production for tomatoes, peppers, eggplants, cucumbers, and watermelon. Besides its usefulness for managing soil-borne diseases, grafting can improve nutrient uptake and yield. However, few studies have assessed the effects of grafting and soil fertility management on yield of open field-grown tomatoes in the Midwest. Therefore, the objective of this two-year research was to better document the effects of grafting heirloom and hybrid tomato cultivar onto hybrid tomato rootstocks on tomato yield and quality. The field experiments were located at the University of Nebraska Lincoln - East Campus in Lincoln, West Central Research and …


Temperate Eurasian Origins Of Hawaiian Chenopodium (Amaranthaceae) Plus Description Of A New Species Endemic To Moloka‘I, Jason T. Cantley, Angela J. Mcdonnell, J Branson, S R. Long, W Garnett, Christopher T. Martine Jan 2020

Temperate Eurasian Origins Of Hawaiian Chenopodium (Amaranthaceae) Plus Description Of A New Species Endemic To Moloka‘I, Jason T. Cantley, Angela J. Mcdonnell, J Branson, S R. Long, W Garnett, Christopher T. Martine

Faculty Journal Articles

Chenopodium taxa of Hawai‘i are tetraploids distinguished from other members of the circumglobally distributed genus by minute morphological characters. Because of these reasons, the geographic origin of Hawaiian Chenopodium has remained unclear. Across the Hawaiian Archipelago, Chenopodium taxa are morphologically variable and grow in highly disparate xeric habitats, especially in terms of precipitation, temperature, wind, salt spray, and solar irradiation. Habitats include dry subalpine shrublands, sandy beach strand of atolls in the Northwest Hawaiian Islands, dry forests, and precipitously tall sea cliffs of northwestern Moloka‘i. From the Moloka‘i sea cliffs, which are battered by high energy winds, salt spray, and …


Plant Response To Salinity: An Analysis Of Ros Formation, Signaling, And Antioxidant Defense, Turgut Yi̇gi̇t Akyol, Oğuzhan Yilmaz, Bariş Uzi̇lday, Rengi̇n Özgür Uzi̇lday, İsmai̇l Türkan Jan 2020

Plant Response To Salinity: An Analysis Of Ros Formation, Signaling, And Antioxidant Defense, Turgut Yi̇gi̇t Akyol, Oğuzhan Yilmaz, Bariş Uzi̇lday, Rengi̇n Özgür Uzi̇lday, İsmai̇l Türkan

Turkish Journal of Botany

Reactive oxygen species (ROS) are byproducts of normal plant metabolism and their production is elevated under environmental stresses such as drought, extreme temperature, and salinity. Among these, salinity is a worldwide problem that impacts the fertility of arable lands and sustainability of food security, which is getting more attention due to climate change. Halophytes can survive and reproduce in soils containing high concentrations of salt and have developed adaptation mechanisms at physiological, biochemical, and molecular levels including maintenance of ROS metabolism. In this review, we aim to summarize findings related to ROS production, signaling, scavenging, and especially ROS avoidance mechanisms …


Regulation Of Antioxidant Activity In Maize (Zea Mays L.) By Exogenous Application Of Sulfur Under Saline Conditions, Alia Riffat, Muhammad Sajid Aqeel Ahmad Jan 2020

Regulation Of Antioxidant Activity In Maize (Zea Mays L.) By Exogenous Application Of Sulfur Under Saline Conditions, Alia Riffat, Muhammad Sajid Aqeel Ahmad

Turkish Journal of Botany

One of the major effects of salt stress is high production of reactive oxygen species that adversely affect essential cellular metabolic pathways. To limit the elevated production of reactive oxygen species, plants stimulate various types of antioxidants. In this study, sulfur was used to induce tolerance against oxidative stress through modulation of the activities of various antioxidants. Two maize genotypes (Agatti 2003 and Pak Afgoi 2003) were subjected to different salinity (25 and 75 mM) and sulfur (40 and 80 mM) treatments and a control treatment. Various antioxidants and oxidative stress determinants in maize organs (leaf, shoot, and root) were …


Botanical Characteristics, Potential Uses, And Cultivation Possibilities Of Mustards In Turkey: A Review, Fatma Kayaçeti̇n Jan 2020

Botanical Characteristics, Potential Uses, And Cultivation Possibilities Of Mustards In Turkey: A Review, Fatma Kayaçeti̇n

Turkish Journal of Botany

The mustard species [(Brassica juncea (brown mustard),B. nigra (black mustard),B. rapa syn. B. campestris (field mustard or turnip), and Sinapis alba (white mustard or yellow mustard)] constitute important genetic resources and sources of raw materials to large number of agrobased industries in Turkey and elsewhere. S. alba is usually used as a condiment in dry form. B. nigra is used as a condiment and as vegetable with dietary fibre, vitamin C, and other anticancer compounds. B. juncea is used for oil and as spice. B. rapa is popularly used for biofuel raw material. However, there is poor focus on their …


A Review On Ethnobotany And Promising Pharmacological Aspects Of An Endangered Medicinal Plant, Curcuma Caesia Roxb., Angana Borah, Deepak Kumar, Manabi Paw, Twahira Begum, Mohan Lal Jan 2020

A Review On Ethnobotany And Promising Pharmacological Aspects Of An Endangered Medicinal Plant, Curcuma Caesia Roxb., Angana Borah, Deepak Kumar, Manabi Paw, Twahira Begum, Mohan Lal

Turkish Journal of Botany

Curcuma caesia Roxb. is one of the rarest medicinal plants used traditionally for the mitigation of various ailments. It is now classified as an endangered species and through this review, an overview regarding the pharmacological benefits of this plant has been put forward. Information on the ethnobotany and phytochemistry along with pharmacological activities was retrieved from the electronic databases for the period from 1962 to 2019. A literature review of articles published in local magazines, conference papers, unpublished materials, and books on traditional and medicinal plants of India was also conducted. There is very little information on C.caesiais in the …


Biochemical And Morphological Responses To Cadmium-Induced Oxidative Stress In Cladophora Glomerata, Abuzer Çelekli̇, Hi̇lal Bulut Jan 2020

Biochemical And Morphological Responses To Cadmium-Induced Oxidative Stress In Cladophora Glomerata, Abuzer Çelekli̇, Hi̇lal Bulut

Turkish Journal of Botany

This study aimed to assess the effect of cadmium (Cd2+) concentrations on biovolume, pigments, malondialdehyde (MDA), hydrogen peroxide, proline, total phenolic compounds, total protein, and total carbohydrate contents of Cladophora glomerata . Cultivations of the alga (8.0 ± 0.1 g as fresh weight) were exposed to 7.5, 15, 30, and 60 mg/L of Cd2+ ions in 500 mL flasks containing 400 mL of the medium on a shaker at 120 rpm for 7 days. Results of Fourier transform infrared analyses indicated that the amide, anionic, and amino groups had significant rolesin the binding of Cd2+ on C. glomerata. The detrimental …


Karyotypic Phylogeny And Polyploidy Variations Of Paronychia (Caryophyllaceae) Taxa In Turkey, Hali̇l Erhan Eroğlu, Derya Altay, Ümi̇t Budak, Esra Marti̇n Jan 2020

Karyotypic Phylogeny And Polyploidy Variations Of Paronychia (Caryophyllaceae) Taxa In Turkey, Hali̇l Erhan Eroğlu, Derya Altay, Ümi̇t Budak, Esra Marti̇n

Turkish Journal of Botany

Chromosomal data can provide very valuable information about karyotypic phylogeny and speciation. This is the first study on karyotype phylogeny and polyploidy variations of the genus Paronychia. In this context, the results are these: (1) in 14 taxa, the first report on chromosomes numbers; (2) in 2 taxa, equal chromosome numbers as in the previous report; (3) in all taxa, the first report of detailed karyotype analyses; (4) karyotype asymmetry data and generally symmetrical karyotypes; (5) karyotypic variations by mechanisms of dysploidy and polyploidy; and (6) phylogenetic relationships in Paronychia. The data indicate that Anatolia is an important area for …


An Integrated Approach To The Study Of Hypericum Occurring In Sicily, Antonio Giovino, Alessandra Carrubba, Silvia Lazzara, Edoardo Napoli, Gianniantonio Domina Jan 2020

An Integrated Approach To The Study Of Hypericum Occurring In Sicily, Antonio Giovino, Alessandra Carrubba, Silvia Lazzara, Edoardo Napoli, Gianniantonio Domina

Turkish Journal of Botany

An integrated approach to the study of taxa of the genus Hypericum occurring in Sicily is proposed. The results of morphological, biochemical, and molecular analyses are combined to better assess the relationships between the species investigated and test the suitability of DNA barcoding technique in the discrimination of these taxa. For the name Hypericum aegypticum subsp. webbii (Spach) N. Robson a lectotype is designated. For Hypericum triquetrifolium Turra a lectotype and a supporting epitype are designated. The presence of Hypericum perforatum L. subsp. perforatum is excluded from Sicily and the previous reports have to be referred to H. perforatum subsp. …


An Attempt To Solve The Taxonomic Confusion Of Thlaspiceras F.K.Mey. Complex (Noccaea Moench-Brassicaceae) With Issrs, Kurtuluş Özgi̇şi̇, Ati̇la Ocak, Burcu Tarikahya Hacioğlu Jan 2020

An Attempt To Solve The Taxonomic Confusion Of Thlaspiceras F.K.Mey. Complex (Noccaea Moench-Brassicaceae) With Issrs, Kurtuluş Özgi̇şi̇, Ati̇la Ocak, Burcu Tarikahya Hacioğlu

Turkish Journal of Botany

Meyer separated Thlaspi into 12 genera, specifically using the seed-coat anatomy. Currently, only 4 species have been retained in Thlaspi s.str and all of the other species were divided into other genera, one of which was Thlaspiceras F.K.Mey.. Based on recent molecular studies and morphological features, Al-Shehbaz (2014) suggested recognizing all of Meyer?s segregates under Noccaea and Thlaspi s.str. All of Meyer?s Thlaspiceras species, namely Th. dolichocarpum (Zohary) F.K.Mey.,Th. eigii (Zohary) F.K.Mey., Th. crassifolium A.Huber-Morath andF.K.Mey., Th. bovis F.K.Mey., Th. oxyceras (Boiss.) F.K.Mey., Th. capricornutum F.K.Mey., Th. hubermorathii F.K.Mey., Th. cappadocicum (Boiss. and Balansa) F.K.Mey., Th. triangulare F.K.Mey., Th. rechingeri …


A Phylogenetic Analysis And Biogeographical Distribution Of Teucrium Sect. Teucrium (Lamiaceae) And Taxonomic Notes For A New Species From Southwest Turkey, Ahmet Aksoy, Taner Özcan, Hüseyi̇n Gi̇ri̇şken, Jale Çeli̇k, Tuncay Di̇rmenci̇ Jan 2020

A Phylogenetic Analysis And Biogeographical Distribution Of Teucrium Sect. Teucrium (Lamiaceae) And Taxonomic Notes For A New Species From Southwest Turkey, Ahmet Aksoy, Taner Özcan, Hüseyi̇n Gi̇ri̇şken, Jale Çeli̇k, Tuncay Di̇rmenci̇

Turkish Journal of Botany

Teucrium L. is a well-known and cosmopolitan genus of the Lamiaceae family. In Turkey, the genus is represented by 36 species (48 taxa). Teucrium Sect. Teucrium that this study focuses on comprises around 30 species worldwide and is mainly distributed in countries of the Mediterranean Basin. With 11 species (14 taxa), it is the second-largest section of the genus Teucrium in Turkey. In this study, morphological and molecular findings were evaluated and the phylogeny and biogeographical distribution of Sect. Teucrium were analyzed. Also, five endemic taxa belonging to Sect. Teucrium and which play an informative role in the subsectional classification …


The Fluctuations Of Airborne Fungal Components In Western Romania, Nicoleta Ianovici Jan 2020

The Fluctuations Of Airborne Fungal Components In Western Romania, Nicoleta Ianovici

Turkish Journal of Botany

Outdoor regional concentrations of airborne fungal spores and fungal fragments were measured using the 7-day Lanzoni sampler. The daily and intradiurnal fluctuations recorded during the monitored period have been studied. The multiple regression analysis was performed in order to determine how much of the total variance in these concentrations could be explained by meteorological parameters. Daytime periodicity (statistically significant) was established only in a few cases. As the relative importance of the weather factors varied, they could not be ranked according to their effect.


Identification And Expressional Profiling Of Putative Max1 Gene In Sugar Beet (Beta Vulgaris L.), Ercan Selçuk Ünlü, Songül Gürel, Fatemeh Aflaki, Arman Pazuki, Günce Şahi̇n, Ekrem Gürel Jan 2020

Identification And Expressional Profiling Of Putative Max1 Gene In Sugar Beet (Beta Vulgaris L.), Ercan Selçuk Ünlü, Songül Gürel, Fatemeh Aflaki, Arman Pazuki, Günce Şahi̇n, Ekrem Gürel

Turkish Journal of Botany

Sugar beet is an industrial crop cultivated mostly for sucrose production. Today, modern hybridization applications have raised the sugar content to 20%. Considering the increased demand globally, it is required to develop new yield?increasing application strategies. This requires extensive knowledge of the genetic mechanisms to control plant growth and metabolism. Investigation of phytohormones is promising to increase our knowledge of plant growth and developmental processes. Strigolactones are recently introduced plant hormones. They are responsible for shoot and root architecture, and involved in development, communication, germination, and responses to stress. Four major proteins (AtD27, MAX1, MAX3, MAX4) are responsible for the …


Identification And In Silico Analysis Of Phantastica Gene In Saintpaulia Ionantha H. Wendl (Gesneriaceae), Mina Kazemian, Elham Mohajel Kazemi, Maryam Kolahi, Valiollah Ghasemi Omran Jan 2020

Identification And In Silico Analysis Of Phantastica Gene In Saintpaulia Ionantha H. Wendl (Gesneriaceae), Mina Kazemian, Elham Mohajel Kazemi, Maryam Kolahi, Valiollah Ghasemi Omran

Turkish Journal of Botany

Saintpaulia ionantha H. Wendl (synonym Streptocarpus ionanthus) has been considered an ornamental plant. The PHANTASTICA (PHAN) gene has a significant role in the formation of plant organs adaxial?abaxial polarity. In the present study the PHAN gene was identified in Saintpaulia for the first time using PCR. To determine the expression pattern of the PHAN gene, gene expression was compared at 3 developmental stages using real time PCR. For in silico analyses, protein characteristics, secondary and 3D structures of protein, intracellular localization, and the phylogenetic tree were investigated using bioinformatics tools. The partial CDS of PHAN gene contained 756 nucleotides, a …


Ultrastructural Response Of Wheat (Triticum Aestivum L.) Lines To Potential Allelopathy Of Alstonia Scholaris (L.) R. Br. Leaf Extract, Mansoor Hameed, Sana Fatima, Syed Mohsan Raza Shah, Farooq Ahmad, Muhammad Ashraf, Maryam Ghulam-Nabi, Muhammad Sajid Aqeel Ahmad, Iftikhar Ahmad, Ummar Iqbal Jan 2020

Ultrastructural Response Of Wheat (Triticum Aestivum L.) Lines To Potential Allelopathy Of Alstonia Scholaris (L.) R. Br. Leaf Extract, Mansoor Hameed, Sana Fatima, Syed Mohsan Raza Shah, Farooq Ahmad, Muhammad Ashraf, Maryam Ghulam-Nabi, Muhammad Sajid Aqeel Ahmad, Iftikhar Ahmad, Ummar Iqbal

Turkish Journal of Botany

An investigation was carried out to evaluate the impact of the allelopathic effect of Alstonia scholaris leaf extract on morphoanatomical and physiological characteristics of 5 wheat lines. Three extract dilutions were prepared, viz. 0 (control), 15 and 30% of the aqueous extract and sprayed on wheat lines (3094, 5066, M5082, 7076 and A2011) at 15-day intervals until maturity from November 2017 to May 2018. All wheat lines responded differently to an allelochemical extract of A. scholaris. Disintegration of root parenchyma and transformation of stem chlorenchyma to sclerenchyma in stems were noted in Line 3094. Increased sclerification in the root cortex …


Relationship Between Pollen Counts And Weather Variables In The Atmosphere Of Mersin Province On The Eastern Mediterranean Coast Of Turkey, Ni̇han Çakir, Cahi̇t Doğan Jan 2020

Relationship Between Pollen Counts And Weather Variables In The Atmosphere Of Mersin Province On The Eastern Mediterranean Coast Of Turkey, Ni̇han Çakir, Cahi̇t Doğan

Turkish Journal of Botany

This study researched atmospheric pollen from Mersin Province using the volumetric method between in 2016 and 2017. The daily, weekly, monthly, and annual distribution of the pollen obtained during the study was identified. The relationship between pollen and meteorological factors was researched using Spearman?s rho analysis. During the two-year study, 32,336 pollen grains/m3 from 40 different taxa [22 trees, 1 grass (Poaceae), and 17 other weeds] were identified. Of the total pollen, 82% belonged to trees, 6.8% to grasses, 11% to other weeds, and unidentified taxa accounted for 0.2%. In the first year, 17,070 pollen grains/m3 were identified in the …


Aeropalynological Survey In The City Center Of Aydın (Turkey), Aykut Güvensen, Ulaş Uğuz, Tarik Altun, Ayli̇n Eşi̇z Dereboylu, Nedret Şengonca Tort Jan 2020

Aeropalynological Survey In The City Center Of Aydın (Turkey), Aykut Güvensen, Ulaş Uğuz, Tarik Altun, Ayli̇n Eşi̇z Dereboylu, Nedret Şengonca Tort

Turkish Journal of Botany

Airborne pollen grains in Aydın, an important city for agriculture and tourism in the western part of Turkey, were studied for 2 years (2014 and 2015) using the volumetric method. During a 2-year study conducted in the city center, an average of 19,226 pollen grains belonging to 46 taxa were detected. Among these detected taxa, 29 (average 73.97%) belonged to arboreal plants and 17 (average 24.95%) to nonarboreal plants. The highest pollen concentrations belonged to Olea europaea (21.02%), Quercus (15.23%), Poaceae (11.89%), Pinaceae (11.47%), Cupressaceae/Taxaceae (11.11%), Platanus(4.12%), Morus (3.83%), and Urticaceae (3.58%), which were considered to be the dominant species. …


Seed Morphology And Testa Ultrastructure In Allium Stipitatum Complex (Amaryllidaceae; Allioideae) And Their Systematic Significance, Mina Khorasani, Shahryar Saeidi Mehrvarz, Shahin Zarre Jan 2020

Seed Morphology And Testa Ultrastructure In Allium Stipitatum Complex (Amaryllidaceae; Allioideae) And Their Systematic Significance, Mina Khorasani, Shahryar Saeidi Mehrvarz, Shahin Zarre

Turkish Journal of Botany

Characteristic features of seed and testa cells in 13 species of Allium, representing its five recognized sections, Compactoprason, Megaloprason, Procerallium, Decipientia and Pseudoprason were studied using both stereomicroscope and scanning electron microscope. The identified characters, such as seed shape, alignment and shape of testa cells, features of outer cell walls, verruca type, density of verrucae and granules, seed size as well as cell wall undulations were evaluated statistically. The our findings indicated the significance level of P ? 0.01 for examined characters using the Kruskal-Wallis and ANOVA analyses.Two principal components of factor analysis revealed the following traits to be most …


Antibacterial, Antifungal, Antioxidant Activity And Polyphenol Content Of Aerial Parts And Bulbs Of Allium Schugnanicum., Saidbeg Satorov, F. Mirzoeva, Sh. Kurbonbekova, Sh. Satorov, M. Vakhidova, Vyacheslav Dushenkov Jan 2020

Antibacterial, Antifungal, Antioxidant Activity And Polyphenol Content Of Aerial Parts And Bulbs Of Allium Schugnanicum., Saidbeg Satorov, F. Mirzoeva, Sh. Kurbonbekova, Sh. Satorov, M. Vakhidova, Vyacheslav Dushenkov

Publications and Research

Objective: То study of antibacterial, antifungal and antioxidant activity, and content of polyphenols in the bulb and aerial parts of an endemic species of onion A. schugnanicum. Methods: An ethanol-based extract was prepared from fresh plants. Total polyphenolic content (Folin) and ABTS antioxidant capacity assays were used to characterized extracts. Extracts obtained from bulbs, peduncle, and seeds demonstrated antibacterial activity against the reference Staphylococcus aureus (ATCC 4929), Pseudomonas aeruginosa (ATCC 4930) and Klebsiella pneumoniae (ATCC 4927) strains, as well as against the hospital strains of the same types of bacteria, i.e. strains isolated from inpatient surgical patients. Results: The study …


Managing Forest Disturbances: Effects On Mule Deer And Plant Communities In Montana's Northern Forests, Teagan Ann Hayes Jan 2020

Managing Forest Disturbances: Effects On Mule Deer And Plant Communities In Montana's Northern Forests, Teagan Ann Hayes

Graduate Student Theses, Dissertations, & Professional Papers

Mule deer (Odocoileus hemionus) are frequently the focus of population and habitat management in the western United States. Land and wildlife managers use disturbance to reset forests to earlier successional stages and improve the quality and quantity of forage available to mule deer. However, the effects of management practices on nutrition and selection vary widely, so the implementation of management practices raises ecological as well as management-related concerns. This work investigated how disturbance from wildfire, prescribed fire, and timber harvest influences the spatial and temporal distribution of nutritional resources in mule deer summer range, and therefore, how the …


Plant-Pollinator Associations In An Eastern Serpentine Savannah And The Effects Of Overbrowsing, Allyson Richins Jan 2020

Plant-Pollinator Associations In An Eastern Serpentine Savannah And The Effects Of Overbrowsing, Allyson Richins

Theses and Dissertations

Chapter 1: Native plant response to deer overbrowsing in a serpentine savannah

Plants are particularly vulnerable to physical disturbance in low productivity areas, due to a high cost of replacing lost plant tissue. In the eastern United States, serpentine grasslands are fragmented ecosystems with high concentrations of rare endemic plant species, low concentrations of soil nutrients, and uncontrolled deer overpopulation. This study assessed functional responses of native angiosperms in a rare eastern serpentine savannah to selective deer browsing. Plant count, flower count, floral area, vegetative area, and plant height of 10 serpentine plant species were compared inside and outside of …


Arthropod Resistant Tomatoes: Screening Tools, Yield And Nutritional Quality Of Interspecific Hybrids, Mohammad Hasan Salman Ali Dawood Jan 2020

Arthropod Resistant Tomatoes: Screening Tools, Yield And Nutritional Quality Of Interspecific Hybrids, Mohammad Hasan Salman Ali Dawood

Theses and Dissertations--Plant and Soil Sciences

Tomato (Solanum lycopersicum) is one of the most economically important vegetable crops grown around globe but is a host for numerous pests and pathogens. In the future, tomato breeders will have to focus on increasing fruit quantity and on enhancing pest resistance. Many accessions of the wild relative of tomato, S. habrochaites display high levels of resistance towards arthropods such as spider mites. The presence of the sesquiterpene hydrocarbon, 7-epi-zingiberene, found in S. habrochaites type IV trichomes has been associated with arthropod resistance. However, the presence of other compounds in its trichome secretions may also be related …


The Lateral Root Density Gene Regulates Root Growth During Water Stress In Wheat, Dante F. Placido, Jaspreet Sandhu, Shirley Sato, Natalya Nersesian, Truyen Quach, Thomas E. Clemente, Paul E. Staswick, Harkamal Walia Jan 2020

The Lateral Root Density Gene Regulates Root Growth During Water Stress In Wheat, Dante F. Placido, Jaspreet Sandhu, Shirley Sato, Natalya Nersesian, Truyen Quach, Thomas E. Clemente, Paul E. Staswick, Harkamal Walia

Department of Agronomy and Horticulture: Faculty Publications

Drought stress is the major limiting factor in agriculture. Wheat, which is the most widely grown crop in the world, is predominantly cultivated in drought-prone rainfed environments. Since roots play a critical role in water uptake, root response to water limitations is an important component for enhancing wheat adaptation. In an effort to discover novel genetic sources for improving wheat adaptation, we characterized a wheat translocation line with a chromosomal segment from Agropyron elongatum, a wild relative of wheat, which unlike common wheat maintains root growth under limited-water conditions. By exploring the root transcriptome data, we found that reduced …


Rhizosphere Microbiome Of Arid Land Medicinal Plants And Extra Cellular Enzymes Contribute To Their Abundance, Abdul Latif Khan, Sajjad Asaf, Raeid M. M. Abed, Yen Ning Chai, Ahmed N. Al-Rawahi, Tupan Kumar Mohanta, Ahmed Al-Rawahi, Daniel P. Schachtman, Ahmed Al-Harrasi Jan 2020

Rhizosphere Microbiome Of Arid Land Medicinal Plants And Extra Cellular Enzymes Contribute To Their Abundance, Abdul Latif Khan, Sajjad Asaf, Raeid M. M. Abed, Yen Ning Chai, Ahmed N. Al-Rawahi, Tupan Kumar Mohanta, Ahmed Al-Rawahi, Daniel P. Schachtman, Ahmed Al-Harrasi

Department of Agronomy and Horticulture: Faculty Publications

Revealing the unexplored rhizosphere microbiome of plants in arid environments can help in understanding their interactions between microbial communities and plants during harsh growth conditions. Here, we report the first investigation of rhizospheric fungal and bacterial communities of Adenium obesum, Aloe dhufarensis and Cleome austroarabica using next-generation sequencing approaches. A. obesum and A. dhufarensis grows in dry tropical and C. austroarabica in arid conditions of Arabian Peninsula. The results indicated the presence of 121 fungal and 3662 bacterial operational taxonomic units (OTUs) whilst microbial diversity was significantly high in the rhizosphere of A. obesum and A. dhufarensis and low …


Wheat Growth Monitoring And Yield Estimation Based On Multi-Rotor Unmanned Aerial Vehicle, Zhaopeng Fu, Jie Jang, Yang Gao, Brian Krienke, Meng Wang, Kaitai Zhong, Qiang Cao, Yongchao Tian, Yan Zhu, Weixing Cao, Xiaojun Liu Jan 2020

Wheat Growth Monitoring And Yield Estimation Based On Multi-Rotor Unmanned Aerial Vehicle, Zhaopeng Fu, Jie Jang, Yang Gao, Brian Krienke, Meng Wang, Kaitai Zhong, Qiang Cao, Yongchao Tian, Yan Zhu, Weixing Cao, Xiaojun Liu

Department of Agronomy and Horticulture: Faculty Publications

Leaf area index (LAI) and leaf dry matter (LDM) are important indices of crop growth. Real-time, nondestructive monitoring of crop growth is instructive for the diagnosis of crop growth and prediction of grain yield. Unmanned aerial vehicle (UAV)-based remote sensing is widely used in precision agriculture due to its unique advantages in flexibility and resolution. This study was carried out on wheat trials treated with different nitrogen levels and seeding densities in three regions of Jiangsu Province in 2018–2019. Canopy spectral images were collected by the UAV equipped with a multi-spectral camera during key wheat growth stages. To verify the …


The State Of Sustainable Agriculture And Agroecology Research And Impacts: A Survey Of U.S. Scientists, Marcia Delonge, Tali Robbins, Andrea D. Basche, Lindsey Haynes-Maslow Jan 2020

The State Of Sustainable Agriculture And Agroecology Research And Impacts: A Survey Of U.S. Scientists, Marcia Delonge, Tali Robbins, Andrea D. Basche, Lindsey Haynes-Maslow

Department of Agronomy and Horticulture: Faculty Publications

A growing body of research suggests that although sustainable agriculture, particularly agroecology, can address challenges such as those related to climate change, ecosystem services, food insecurity, and farmer livelihoods, the transition to such systems remains limited. To gain insight into the state of U.S. sustainable agriculture and agroecology, we developed a 28-question mixed-method survey that was administered to scientists in these fields. Respondents (N=168) represented diverse locations, institutions, and career stages. They offered varied definitions of sustainable agriculture, with 40% considering economic and social well-being to be core components. Respondents identified the amount and duration of public research …


Multi-Trait Random Regression Models Increase Genomic Prediction Accuracy For A Temporal Physiological Trait Derived From High-Throughput Phenotyping, Toshimi Baba, Mehdi Momen, Malachy T. Campbell, Harkamal Walia, Gota Morota Jan 2020

Multi-Trait Random Regression Models Increase Genomic Prediction Accuracy For A Temporal Physiological Trait Derived From High-Throughput Phenotyping, Toshimi Baba, Mehdi Momen, Malachy T. Campbell, Harkamal Walia, Gota Morota

Department of Agronomy and Horticulture: Faculty Publications

Random regression models (RRM) are used extensively for genomic inference and predic- tion of time-valued traits in animal breeding, but only recently have been used in plant sys- tems. High-throughput phenotyping (HTP) platforms provide a powerful means to collect high-dimensional phenotypes throughout the growing season for large populations. How- ever, to date, selection of an appropriate statistical genomic framework to integrate multiple temporal traits for genomic prediction in plants remains unexplored. Here, we demonstrate the utility of a multi-trait RRM (MT-RRM) for genomic prediction of daily water usage (WU) in rice (Oryza sativa) through joint modeling with shoot …