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Articles 3001 - 3030 of 10753

Full-Text Articles in Botany

Aquaporins As Targets For Stress Tolerance In Plants: Genomic Complexity And Perspectives, Wonkeun John Park, Benjamin Todd Campbell Jan 2015

Aquaporins As Targets For Stress Tolerance In Plants: Genomic Complexity And Perspectives, Wonkeun John Park, Benjamin Todd Campbell

Turkish Journal of Botany

As a multigene family, plant aquaporins function not only in water transport but also in transport of small elements that are important for vegetative and reproductive growth of plants. Increasing evidence exhibits the relevance of aquaporins to tolerance against abiotic and biotic stresses such as drought, nutrient deficiency, and herbivore attack. With the accumulation of crop genome sequencing, it is suggested that several aquaporin genes are conserved in subchromosomal locations as tandem duplicated members. In this review, we will discuss the compelling nature of aquaporins as multifunctional transport channels that are often encoded in clustered regions of genomes and relevant …

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Application Of Data Analysis In Cold Stress: A Case Study Of Nicotiana Benthamiana, İbrahi̇m Koç, Zi̇hni̇ Onur Çalişkaner, Ertuğrul Fi̇li̇z Jan 2015

Application Of Data Analysis In Cold Stress: A Case Study Of Nicotiana Benthamiana, İbrahi̇m Koç, Zi̇hni̇ Onur Çalişkaner, Ertuğrul Fi̇li̇z

Turkish Journal of Botany

Cold stress is a major environmental factor in plant life cycles. Nicotiana benthamiana, which belongs to the family Solanaceae, is one of the most commonly used model species in plant-microbe interaction studies. In total, 5205 differentially expressed genes were identified under cold stress in N. Benthamiana. Of these, 5029 were upregulated and 176 were downregulated within four time periods (4 h, 12 h, 24 h, and 48 h). The common up- and downregulated genes were identified as 692 and 6, respectively. The functional annotations of these genes were studied and these common genes involved in protein, RNA, miscellaneous enzyme families, …

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Floral Function In Relation To Floral Structure In Two Periploca Species (Periplocoideae) Apocynaceae, Samia Heneidak, Yougasphree Naidoo Jan 2015

Floral Function In Relation To Floral Structure In Two Periploca Species (Periplocoideae) Apocynaceae, Samia Heneidak, Yougasphree Naidoo

Turkish Journal of Botany

This study comprises an investigation into the floral function in relation to the floral structure of Periploca aphylla and P. Angustifolia, using light and scanning electron microscopy. Both species display the following floral structures: style-head bearing pollen translators, shelf-like nectaries, staminal feet, nectar-collecting troughs, trisegmented corolline corona lobes and corolla lobes, and anthers and nectaries covered by unicellular hairs. Lateral segments of adjacent corona lobes are fused with half of the adaxial base of the adjacent corolla lobes, creating openings through which pollinators can reach the nectar-collecting troughs in the corolla base. Flowers are rotate with spreading corolla lobes and …

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Systematic Placement Of The Turkish Endemic Genus Ekimia (Apiaceae) Based On Morphological And Molecular Data, Dmitry Lyskov, Galina Degtjareva, Tahir Samigullin, Michael Pimenov Jan 2015

Systematic Placement Of The Turkish Endemic Genus Ekimia (Apiaceae) Based On Morphological And Molecular Data, Dmitry Lyskov, Galina Degtjareva, Tahir Samigullin, Michael Pimenov

Turkish Journal of Botany

The systematic position of the monotypic genus Ekimia H.Duman and M.F.Watson (Apiaceae), a narrow endemic to Turkey, was evaluated on the basis of morphological data and nrDNA ITS sequences. Ekimia bornmuelleri (Hub.-Mor. And Reese) H.Duman and M.F.Watson was initially described in Prangos Lindl. Due to the unique fruit morphology uncommon for this genus it was later shifted to an independent genus. In the Bayesian and most parsimonious trees, E. Bornmuelleri is sister to Laserpitium petrophilum Boiss. And Heldr and Laserpitium glaucum Post within the Daucinae clade. This result is consistent with its morphology: the presence of the primary and secondary …

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Towards A New Classification Of Salvia S.L.: (Re)Establishing The Genus Pleudia Raf., Maria Will, Natalie Schmalz, Regine Classen-Bockhoff Jan 2015

Towards A New Classification Of Salvia S.L.: (Re)Establishing The Genus Pleudia Raf., Maria Will, Natalie Schmalz, Regine Classen-Bockhoff

Turkish Journal of Botany

Salvia L. İn its traditional circumscription is the largest genus within the mint family. To date, the magnitude of the task has rendered it difficult to provide a genus-wide revision based on morphological data. Current molecular investigations based on a dense taxon sampling representing the whole phenotypic diversity and distribution range of Salvia confirmed that the genus is polyphyletic. Salvia species fall in 4 distinct clades, although all of them, except Clade IV, also include non-Salvia genera. A taxonomic revision is thus urgently needed with two different approaches that have to be considered: (1) to include the 5 morphologically distinct …

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Molecular Phylogeny And Biogeography Of The South American Genus Metrodorea (Rutaceae), Pedro Dias, Renata Giassi Udulutsch, Jose Rubens Pirani Jan 2015

Molecular Phylogeny And Biogeography Of The South American Genus Metrodorea (Rutaceae), Pedro Dias, Renata Giassi Udulutsch, Jose Rubens Pirani

Turkish Journal of Botany

The genus Metrodorea (Rutaceae), with 6 species, has representatives that vary from small shrubs to tall trees, and its leaf sheaths make it unique in the family; it is restricted to South America, with species diversity concentrated in Brazil. In this study, we applied Bayesian and parsimony methods to infer the molecular phylogeny of Metrodorea, and cladistic biogeographic methods to propose an area cladogram for the genus. All results supported Metrodorea as monophyletic, and the presence of leaf sheaths is reinforced as its key diagnostic feature. Bayesian and parsimony trees were identical for relationships within Metrodorea. The crown clade (M. …

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Aristolochia Altanii (Aristolochiaceae), A New Species From Turkey, Ahmet İlçi̇m, Lütfi̇ Behçet, Aycan Tosunoğlu Jan 2015

Aristolochia Altanii (Aristolochiaceae), A New Species From Turkey, Ahmet İlçi̇m, Lütfi̇ Behçet, Aycan Tosunoğlu

Turkish Journal of Botany

Aristolochia altanii İlçim and Behçet sp. Nov. İs described from Turkey and illustrated. The specimens were collected from Kahramanmaraş in South Anatolia. The new species is closely related to A. Guichardii and A. Brevilabris. However, this species differs in some important characteristics, such as the length of the pedicel and the perianth, the indument of the perianth limb, and the micromorphology of the pollen and the seeds. The diagnostic characters are discussed and taxonomic comments are presented.

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The Phytoplankton Functional Group Concept Provides A Reliable Basis For Ecological Status Estimation In The Çaygören Reservoir (Turkey), Kemal Çeli̇k, Tuğba Ongun Sevi̇ndi̇k Jan 2015

The Phytoplankton Functional Group Concept Provides A Reliable Basis For Ecological Status Estimation In The Çaygören Reservoir (Turkey), Kemal Çeli̇k, Tuğba Ongun Sevi̇ndi̇k

Turkish Journal of Botany

The phytoplankton functional group (FG) concept has been successfully used to determine water quality states in both lake and river systems, but is not yet stressed in regular studies in reservoir environments. The purpose of our study was to estimate the ecological status of the temperate Çaygören Reservoir (2007-2009) using the Q(r) FG composition metric, and to test whether it is able to follow the main structuring of the physical and chemical parameters studied. The main occurring coda were codon C (Cyclotella meneghiniana Kützing, Stephanodiscus neoastraea Hakansson and Hickel), codon T (Gloeotila subconstricta (G.S. West) Printz, Mougeotia sp.), codon X2 …

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Alleviation Of Photosynthetic Inhibition In Copper-Stressed Tomatoes Through Rebalance Of Ion Content By Exogenous Nitric Oxide, Lina Wang, Xiaoyu Yang, Zhonghai Ren, Xiangyang Hu, Xiufeng Wang Jan 2015

Alleviation Of Photosynthetic Inhibition In Copper-Stressed Tomatoes Through Rebalance Of Ion Content By Exogenous Nitric Oxide, Lina Wang, Xiaoyu Yang, Zhonghai Ren, Xiangyang Hu, Xiufeng Wang

Turkish Journal of Botany

Copper (Cu) is an essential element that plays a very important role in plant growth and development. Its accumulation in soil is now considered a serious environmental problem endangering agricultural production and human health. In this study, the influence of exogenous nitric oxide (NO) on photosynthesis, Cu, magnesium (Mg), and iron (Fe) contents was studied in tomato seedlings under Cu stress grown in hydroponic culture. The results showed that the addition of sodium nitroprusside (SNP), a donor of exogenous NO, significantly alleviated photosynthetic inhibition in Cu-stressed tomatoes, including the recovery of photosynthetic pigment content and chlorophyll a fluorescence and the …

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A Computerized Image Database For Freshwater Algae Recorded In Turkey, Bülent Şen, Feray Sönmez, Ahmet Kadri̇ Çeti̇n, Mehmet Tahi̇r Alp, Tülay Özer, Kazim Yildiz, İlkay Açikgöz Erkaya, Abel Udo Udoh, Fatma Çevi̇k Jan 2015

A Computerized Image Database For Freshwater Algae Recorded In Turkey, Bülent Şen, Feray Sönmez, Ahmet Kadri̇ Çeti̇n, Mehmet Tahi̇r Alp, Tülay Özer, Kazim Yildiz, İlkay Açikgöz Erkaya, Abel Udo Udoh, Fatma Çevi̇k

Turkish Journal of Botany

A computer-based image database for freshwater algae recorded in Turkey has been established. A separate page was prepared for each algal taxon and each page includes images and taxonomic and ecological information related to the taxon. Algal images were obtained mainly from authors of algal studies previously carried out in various freshwater bodies in Turkey. Data were then standardized in accordance with that of the central database of Turkish herbaria and a database for Turkish freshwater algae, which were previously established through TÜBİTAK projects. The database program Access was used to enter data, as this program recognizes Turkish characters. A …

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Notes On Astragalus Sect. Hymenostegis (Fabaceae) From Turkey, Seher Karaman Erkul, Ali Bagheri, Ali Asghar Maassoumi, Mohammad Reza Rahiminejad Jan 2015

Notes On Astragalus Sect. Hymenostegis (Fabaceae) From Turkey, Seher Karaman Erkul, Ali Bagheri, Ali Asghar Maassoumi, Mohammad Reza Rahiminejad

Turkish Journal of Botany

Astragalus rubrostriatus Bunge and Astragalus qoturensis Podlech, belonging to Astragalus sect. Hymenostegis Bunge, are recorded here for the first time from Turkey. In addition, Astragalus chrysostachys Boiss. is excluded from the list of Turkish species of Astragalus.

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Evaluation Of Molecular Markers Linked To Fragrance And Genetic Diversity In Indian Aromatic Rice, Ved Prakash Rai, Anil Kumar Singh, Hemant Kumar Jaiswal, Sheo Pratap Singh, Ravi Pratap Singh, Showkat Ahmad Waza Jan 2015

Evaluation Of Molecular Markers Linked To Fragrance And Genetic Diversity In Indian Aromatic Rice, Ved Prakash Rai, Anil Kumar Singh, Hemant Kumar Jaiswal, Sheo Pratap Singh, Ravi Pratap Singh, Showkat Ahmad Waza

Turkish Journal of Botany

DNA-based markers have the potential to improve the efficiency and precision of breeding programs based on marker-assisted selection. In the present study we evaluated the predictive abilities of previously reported PCR-based simple sequence repeat and functional markers related to fragrance in a set of 24 rice genotypes, including traditional basmatis, evolved basmatis, and aromatic indigenous landraces. High-resolution melting analysis with 3 markers was also performed to detect the presence of SNPs and length polymorphism in monomorphic amplicons. All genotypes showed expected marker patterns according to their fragrance classification except 5 fragrant genotypes: Kalanamak 3119, Kasturi Basmati, Basmati LC 74-3, Thurunbhog, …

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Isolation And Expression Analysis Of Ethylene Receptor Genes From Melon(Cucumis Melo) Fruit, Yaşar Karakurt, Nazan Gökteki̇n, Hali̇me Ünlü Jan 2015

Isolation And Expression Analysis Of Ethylene Receptor Genes From Melon(Cucumis Melo) Fruit, Yaşar Karakurt, Nazan Gökteki̇n, Hali̇me Ünlü

Turkish Journal of Botany

Ethylene receptors are involved in ethylene sensing and signal transduction. This study was conducted to isolate genes encoding ethylene receptors from melon fruit and to determine their expression during postharvest fruit ripening. The amplification of melon fruit cDNA with degenerate primers revealed two partial cDNAs. Upon 3' and 5' RACE analysis of the cDNAs, two full length genes designated Cm-ETR1 and Cm-ETR2 were obtained. Cloning and sequencing of the genes showed that Cm-ETR1 and Cm-ETR2 genes were 2320 and 2537 bp in length, respectively. Cm-ETR1 had a predicted open reading frame (ORF) of 2223 nucleotides encoding a protein of 740 …

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Paracaryum Bingoelianum (Boraginaceae), A New Species From Turkey, Lütfi̇ Behçet, Ahmet İlçi̇m Jan 2015

Paracaryum Bingoelianum (Boraginaceae), A New Species From Turkey, Lütfi̇ Behçet, Ahmet İlçi̇m

Turkish Journal of Botany

Paracaryum bingoelianum Behçet & İlçim is described as a new species. It is confined to Bingöl in Eastern Anatolia, Turkey. Paracaryum bingoelianum is closely similar to P. cristatum subsp. cristatum and P. kurdistanicum. It mainly differs from them in that it has a shrub-like woody base and numerous stems with sterile shoots, longer corolla, and bigger nutlets. The diagnostic characters are discussed and taxonomic comments are presented. Seed and pollen characteristics were investigated using light and scanning electron microscopy. Notes on its ecology are also presented. A distribution map of the new and related species is provided.

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Identification And Analysis Of Regulatory Elements In The Germin And Germin-Like Proteins Family Promoters In Rice, Iftikhar Ali, Tariq Mahmood Jan 2015

Identification And Analysis Of Regulatory Elements In The Germin And Germin-Like Proteins Family Promoters In Rice, Iftikhar Ali, Tariq Mahmood

Turkish Journal of Botany

Germins and germin-like proteins constitute a ubiquitous family of plant proteins and have a role in the defense against pathogen attacks. In the present work the Oryza sativa germin-like protein 1 (OsGLP1) and putative germin A (OsGerA) promoter regions of five Pakistani rice varieties were analyzed for variations in expression regulation of these promoters and similarity with others germin and germin-like protein promoters. Phylogenetic analyses showed that the studied OsGLP1 promoters were tightly clustered around the ancestral group while putative OsGerA clustered around the descendant group. HADDOCK was used for docking selected transcription factors (TFs) with its corresponding regulatory elements, …

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Prosthechea Tinukiana Sp. Nov. (Orchidaceae: Laeliinae): An Update Of The Prosthechea Prismatocarpa Complex, Diego Bogarin, Adam P. Karremans Jan 2015

Prosthechea Tinukiana Sp. Nov. (Orchidaceae: Laeliinae): An Update Of The Prosthechea Prismatocarpa Complex, Diego Bogarin, Adam P. Karremans

Turkish Journal of Botany

We describe and illustrate a new species of Prosthechea from Costa Rica. The species is similar to Prosthechea ionocentra, but it is easily distinguishable by its inflorescence originating from the penultimate mature pseudobulb; its purple spotted sepals and petals; the cordate, acute labellum; the disc with two longer, narrower keels; the stigmatic arms of the column, which are convergent and rounded; and the narrower stigma. Differences from other related species are given and discussed. Data on distribution, habitat and ecology, etymology, and phenology are provided. An updated key to the species of the Prosthechea prismatocarpa complex is presented.

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Spatial And Temporal Characterization Of The Physicochemical Parameters And Phytoplankton Assemblages In Dodurga Reservoir (Sinop, Turkey), Seda Hasirci Mustak, Eli̇f Tezel Ersanli Jan 2015

Spatial And Temporal Characterization Of The Physicochemical Parameters And Phytoplankton Assemblages In Dodurga Reservoir (Sinop, Turkey), Seda Hasirci Mustak, Eli̇f Tezel Ersanli

Turkish Journal of Botany

Physicochemical parameters and phytoplankton seasonal variation were investigated between August 2010 and July 2011 in Dodurga Reservoir. A total of 35 phytoplankton taxa were identified. Phytoplankton samples collected from surface samples in late winter, spring, and early and mid-summer were found to be influenced by nitrate, dissolved oxygen, pH, temperature, and phosphate. However, early winter and autumn assemblages of the samples were influenced by total hardness, silica, water transparency, conductivity, organic matter, and oxidation reduction potential. The phytoplankton samples collected from different depths in early and mid-summer were found to be influenced by only temperature. Early and middle spring assemblages …

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Genetic And Functional Analysis Of Host Genes Involved In Pathogenic And Symbiotic Legume-Microbe Interactions, Fang Tang Jan 2015

Genetic And Functional Analysis Of Host Genes Involved In Pathogenic And Symbiotic Legume-Microbe Interactions, Fang Tang

Theses and Dissertations--Plant and Soil Sciences

Legumes form symbiotic and pathogenic interactions with microbes. Understanding the molecular mechanisms underlying the legume-microbe interactions would help us to improve crop production in a sustainable manner. This thesis covers two independent research projects. The first project was to study the role of alternative splicing in RCT1-mediated disease resistance. RCT1 is a TIR-NBS-LRR-type plant resistance (R) gene in Medicago truncatula that confers broad-spectrum resistance to Colletotrichum trifolii, a fungal pathogen that causes anthracnose disease in Medicago. RCT1 undergoes alternative splicing at both coding and 3'-untranslated regions, thereby producing multiple transcript variants in its expression profile. …

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Plant Functional Types In Mediterranean Enclaves In Western Black Sea Region Of Turkey, Emi̇re Elmas, Hamdi̇ Güray Kutbay Jan 2015

Plant Functional Types In Mediterranean Enclaves In Western Black Sea Region Of Turkey, Emi̇re Elmas, Hamdi̇ Güray Kutbay

Turkish Journal of Botany

Mediterranean-type communities of the Sinop Peninsula were classified as plant functional types (PFTs) by the help of some vegetative and generative traits and 5 PFTs were determined. Some vegetative (specific leaf area (SLA), leaf texture, leaf P concentration, deciduousness, hairiness) and generative (reproductive phenology and fruit type) traits were found to be significant for discrimination of PFTs. It was found that PFT3 and PFT4 were associated with leaf texture, SLA, and leaf P concentration. PFT2 was associated with deciduousness, hairiness, and reproductive phenology, while PFT1 was only associated with fruit type. Generative traits were found to be associated with PFT1 …

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Taxonomic Revision Of The Genus Poa L. In Iran, New Additions To Flora Iranica, And A New Identification Key, Mahsa Kavousi, Mostafa Assadi, Taher Nejadsattari Jan 2015

Taxonomic Revision Of The Genus Poa L. In Iran, New Additions To Flora Iranica, And A New Identification Key, Mahsa Kavousi, Mostafa Assadi, Taher Nejadsattari

Turkish Journal of Botany

In this study, an identification key of Poa L. species in Iran and descriptions of all species are presented. Based on the results, 19 species and 4 subspecies of Poa are known from Iran. Two species, P. longifolia Trin. and P. sterilis M.Bieb., are new records for the flora of Iran. Some taxa such as P. versicolor Besser. subsp. araratica (Trautv.) Tzvelev and P. bactriana Roshev. subsp. glabriflora (Roshev. ex Ovcz.) Tzvelev were placed as subspecies. Poa supina Schrad. and P. aitchisonii Boiss. were not confirmed to occur in Iran since they were observed neither among the herbarium specimens nor …

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Fungi Occurring On The Plants Of The Genus Amaranthus L., Wojciech Pusz, Elzbieta Plaskowska, İsmet Yildirim, Ryszard Weber Jan 2015

Fungi Occurring On The Plants Of The Genus Amaranthus L., Wojciech Pusz, Elzbieta Plaskowska, İsmet Yildirim, Ryszard Weber

Turkish Journal of Botany

A study of fungi on Amaranthus spp. was performed in 2007-2009. The following forms of the genus were taken under consideration: cultivated amaranth (A. cruentus) and a wild form (A. retroflexus) growing as a weed on amaranth and sugar beet plantations and growing as a ruderal weed. The aim of the work was to determine which fungi communities occur in the phyllosphere, roots, rhizoplane, and rhizosphere of Amaranthus spp. To investigate the phyllosphere fungi communities, 5 plants were taken in the seed formation phase. From each plant, 3 healthy, symptomless leaves were taken. In addition, the isolation of fungi communities …

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Differentiation Of Some Myxomycetes Species By Its Sequences, Hayri̇ Baba, Mustafa Kolukirik, Murat Zümre Jan 2015

Differentiation Of Some Myxomycetes Species By Its Sequences, Hayri̇ Baba, Mustafa Kolukirik, Murat Zümre

Turkish Journal of Botany

Seven different PCR primers targeting 18 different myxomycetes genera were designed and ribosomal DNA ITS1-5.8SrDNA-ITS2 regions of 52 morphologically characterized species from Turkey were amplified and sequenced. The studied species belong to the genera Arcyria, Badhamia, Ceratiomyxa, Collaria, Comatricha, Cribraria, Diachea, Diderma, Didymium, Enerthenema, Lamproderma, Lycogala, Perichaena, Physarum, Reticularia, Stemonitis, Stemonitopsis, and Trichia. Significant ITS region size and sequence variations were observed among the analyzed species. The ITS based phylogenetic tree did not reflect evolutionary relationships at genus or higher level. The only exception was the genus Didymium, which formed a clearly distinctive cluster in the phylogenetic tree containing 18 …

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Seed Morphology Of Some Silene L. (Caryophyllaceae) Species Collected From Turkey, Mehmet Yaşar Dadandi, Kemal Yildiz Jan 2015

Seed Morphology Of Some Silene L. (Caryophyllaceae) Species Collected From Turkey, Mehmet Yaşar Dadandi, Kemal Yildiz

Turkish Journal of Botany

The seed micro- and macromorphology of 39 Silene taxa were studied by stereomicroscope and scanning electron microscope. Quantitative (9) and qualitative (11) values of seed characters vary greatly both within and between taxa. The tree topology of UPGMA based on quantitative values does not supported the traditional relationship. Therefore, we concluded that seed characters of Silene alone cannot be used to describe taxa without detecting the full range of intra- and intertaxon variation of those characters.

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Six New Genus Records For Turkish Pezizales From Gaziantep Province, Abdullah Kaya, Yasi̇n Uzun Jan 2015

Six New Genus Records For Turkish Pezizales From Gaziantep Province, Abdullah Kaya, Yasi̇n Uzun

Turkish Journal of Botany

The genera Hypotarzetta Donadini, Pseudombrophila Boud., Pustularia Bonord., Pyronema Carus, Tricharina Eckblad (Pyronemataceae Corda), and Thecotheus Boud. (Ascobolaceae Boud. Ex Sacc.) are recorded from Turkey for the first time based on the collections of Hypotarzetta insignis (Berthet and Riousset) Donadini, Pseudombrophila merdaria (Fr.) Brumm., Pustularia patavina (Cooke and Sacc.) Boud., Pyronema omphalodes (Bull.: Fr.) Fuckel, Tricharina gilva (Boud. Ex Cooke) Eckblad, and Thecotheus pelletieri (P. Crouan and H. Crouan) Boud., respectively. Short descriptions and photographs of the taxa related to their macro- and micromorphologies are provided.

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Changes In Epilithic Diatom Communities And Periphytic Biomass Downstream Of A Reservoir On A Mediterranean River (Calabria Region, S Italy), Luana Gallo, Maurizio Battegazzore, Anna Corapi, Lucio Lucadamo Jan 2015

Changes In Epilithic Diatom Communities And Periphytic Biomass Downstream Of A Reservoir On A Mediterranean River (Calabria Region, S Italy), Luana Gallo, Maurizio Battegazzore, Anna Corapi, Lucio Lucadamo

Turkish Journal of Botany

Diatom community structure and morphotype classification were studied and periphyton biomass, course particulate organic matter (CPOM), hydrogeomorphological parameters, and nutrient concentrations were measured at 4 stations downstream of the Cecita dam (Mucone River) and at 3 control sites located on different tributaries of the Mucone River in May, August, and November 2005. The lowest values of current velocities and the highest amounts of sand deposition and CPOM accumulation were detected at the stations closest to the dam. Downstream, the confluence with the first permanent tributary (Cerreto River) of the Mucone showed a "rhythral" morphology, similar to that of the control …

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Influence Of Foliar Application Of Silicon On Chlorophyll Fluorescence, Photosynthetic Pigments, And Growth In Water-Stressed Wheat Cultivars Differing In Drought Tolerance, Kobra Maghsoudi, Yahya Emam, Muhammad Ashraf Jan 2015

Influence Of Foliar Application Of Silicon On Chlorophyll Fluorescence, Photosynthetic Pigments, And Growth In Water-Stressed Wheat Cultivars Differing In Drought Tolerance, Kobra Maghsoudi, Yahya Emam, Muhammad Ashraf

Turkish Journal of Botany

The influence of foliar application of silicon (Si) on chlorophyll contents, chlorophyll fluorescence, and growth of four wheat cultivars differing in drought tolerance (Sirvan and Chamran, as relatively drought tolerant, and Shiraz and Marvdasht, as drought sensitive) was examined under water deficit (100% and 40% F.C.) created in a greenhouse. The results showed that water deficit decreased shoot and root lengths, shoot dry weight, root dry weight, water utilization efficiency, chlorophyll a and b, and chlorophyll stability index. In contrast, foliar application of Si improved plant growth parameters and chlorophyll pigment concentration under water deficit; however, it did not significantly …

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Phylogeny Of Korean Opuntia Spp. Based On Multiple Dna Regions, Krishnamoorthy Srikanth, Sung Soo Whang Jan 2015

Phylogeny Of Korean Opuntia Spp. Based On Multiple Dna Regions, Krishnamoorthy Srikanth, Sung Soo Whang

Turkish Journal of Botany

Although Opuntia species are of high agronomic value in Korea, the taxonomic position of Korean Opuntia species has never been investigated. The taxonomic position of Korean Opuntia spp. Within the tribe Opuntieae was examined based on DNA sequence analysis of matK, trnL-F, atpB-rbcl, and ITS regions. The total amplified sequence length was 2977 bp; only 18 parsimonious informative sites were present, even though they belonged to different species. A phylogenetic tree using both the maximum likelihood method with 2000 bootstrap replications and Bayesian posterior probabilities was constructed. The new forma, Opuntia humifusa f. Jeollaensis, used in this study was placed …

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Flow Cytometric Estimation Of The Nuclear Genome Size Of 22 Echinops (Asteraceae) Taxa From Turkey, Handan Şapci, Monika Rewers, Cem Vural, Elwira Sliwinska Jan 2015

Flow Cytometric Estimation Of The Nuclear Genome Size Of 22 Echinops (Asteraceae) Taxa From Turkey, Handan Şapci, Monika Rewers, Cem Vural, Elwira Sliwinska

Turkish Journal of Botany

Taxonomic classification of the genus Echinops (Asteraceae) is still unclear, mostly because of the small morphological differences between the species. Estimation of genome size is helpful in species identification and in establishing a relationship between them; however, nuclear DNA content has been established for only 25% of known Echinops species. In the present study, in addition to the chromosome number, the DNA content of species in 22 taxa belonging to 3 sections (Echinops, Oligolepis, and Ritropsis) was estimated using flow cytometry; 9 of the species are endemic to Turkey. For 16 of the species this is the first report on …

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Do Epidermal Cell Types Have An Effect Upon Ultraviolet Patterns On Flower Petals?, Margaux Flaherty Jan 2015

Do Epidermal Cell Types Have An Effect Upon Ultraviolet Patterns On Flower Petals?, Margaux Flaherty

Williams Honors College, Honors Research Projects

Flower petal epidermal cell shape and ultraviolet patterns called nectar guides may have a considerable impact on pollinator behavior and consequently, the reproductive success of the floral species. Similarly, flower petal epidermal cell shape may have an effect on floral color; however, these effects have only been measured in the visible light range (Whitney et al., 2009). This study attempts to determine if epidermal cell shape has an effect upon ultraviolet floral patterns. Experimental results show that all of the floral species studied seem to have a conical epidermal cell shape, but varying levels of ultraviolet reflectance and absorbance; …

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Identification Of Novel Qtl Governing Root Architectural Traits In An Interspecific Soybean Population, Lakshmi P. Manavalan, Silvas J. Prince, Theresa A. Musket, Julian Chaky, Rupesh Deshmukh, Tri D. Vuong, Li Song, Perry B. Cregan, James C. Nelson, J. Grover Shannon, James E. Specht, Henry T. Nguyen Jan 2015

Identification Of Novel Qtl Governing Root Architectural Traits In An Interspecific Soybean Population, Lakshmi P. Manavalan, Silvas J. Prince, Theresa A. Musket, Julian Chaky, Rupesh Deshmukh, Tri D. Vuong, Li Song, Perry B. Cregan, James C. Nelson, J. Grover Shannon, James E. Specht, Henry T. Nguyen

Department of Agronomy and Horticulture: Faculty Publications

Cultivated soybean (Glycine max L.) cv. Dunbar (PI 552538) and wild G. soja (PI 326582A) exhibited significant differences in root architecture and root-related traits. In this study, phenotypic variability for root traits among 251 BC2F5 backcross inbred lines (BILs) developed from the cross Dunbar/PI 326582A were identified. The root systems of the parents and BILs were evaluated in controlled environmental conditions using a cone system at seedling stage. The G. max parent Dunbar contributed phenotypically favorable alleles at a major quantitative trait locus on chromosome 8 (Satt315-I locus) that governed root traits (tap root length and …

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