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Articles 1 - 30 of 137
Full-Text Articles in Life Sciences
Differences In Temperature Responses Of Achene Types In Centaurea Melitensis, Kandee L. Bain
Differences In Temperature Responses Of Achene Types In Centaurea Melitensis, Kandee L. Bain
LUX: A Journal of Transdisciplinary Writing and Research from Claremont Graduate University
Southern California has a Mediterranean climate with wet winters and hot dry summers. This type of environment is associated with irregular temperature patterns and rainfall, which can be unpredictable. Unpredictable environments, can threaten the germination and survival of plants like Centaurea melitensis. To ensure germination and survival under unpredictable environmental conditions, some plants may develop characteristic structures like cleistogamous flower heads, and in some cases they will develop heteromorphic achenes. Morphological differences between peripheral and center achenes may indicate variable responses to temperature. Additionally, unpredictable environmental conditions may lead to differences in the number of peripheral to center achenes …
Epilithic And Aerophilic Diatoms In The Artificial Environment Of Kungsträdgården Metro Station, Stockholm, Sweden, Lena Norbäck Ivarsson, Magnus Ivarsson, Johannes Lundberg, Therese Sallstedt, Catarina Rydin
Epilithic And Aerophilic Diatoms In The Artificial Environment Of Kungsträdgården Metro Station, Stockholm, Sweden, Lena Norbäck Ivarsson, Magnus Ivarsson, Johannes Lundberg, Therese Sallstedt, Catarina Rydin
International Journal of Speleology
The Kungsträdgården metro station is an artificial and urban subsurface environment illuminated with artificial light. Its ecosystem is almost completely unknown and as a first step to better understand the biology and rock wall habitats the diatom flora was investigated. A total of 12 species were found growing on the rock walls of Kungsträdgården metro station. The results show the diatom flora in Kungsträdgården to be dominated by e.g. Diadesmis contenta, Diadesmis perpusilla, Pinnularia appendiculata, Nitzschia amphibia, Nitzschia sinuata and Diploneis ovalis. One species, Caloneis cf. aerophila, has never been reported from Sweden before. …
Section Abstracts: Botany
Virginia Journal of Science
Abstracts of the Botany Section for the 91st Annual Virginia Journal of Science Meeting, May 2013
Botany Of Desire: Looking At The Rose Plant As A Manmade Tool Of Love, Taylor Aaserud
Botany Of Desire: Looking At The Rose Plant As A Manmade Tool Of Love, Taylor Aaserud
The Review: A Journal of Undergraduate Student Research
The use of roses as a symbol of emotion (specifically love) and as a result, a model of artificial selection, is rarely questioned. These plants share a rich history with multiple humanities around the world and have been a subject of genetic interest to see exactly what genes are being expressed that signal those beautiful desirable traits. To answer the question of “why” these plants have been a vector for human love for so long, I have analyzed 7 articles, one of them outlining the cause of the favored “double flower” mutation found in so many modern roses today. Upon …
Persons As Plants: Ecopsychology And The Return To The Dream Of Nature, Monica Gagliano
Persons As Plants: Ecopsychology And The Return To The Dream Of Nature, Monica Gagliano
Landscapes: the Journal of the International Centre for Landscape and Language
Abstract. In this article, I examine human-plant perceptions and interactions in terms of developing a new perspective on the perception and the actions of people towards plants. By combining my scientific understanding of the biological world and my own experiences working with plant shamans, storytellers and mystics from around the world, I engage with the idea that the hierarchical structure by which Western science defines the variety of life forms as ‘primitive’ or ‘more evolved’ is at the root of the current environmental crisis and I argue that the solution to it rests in a change of this very perspective.
Species Status Of Sclerocactus Brevispinus, S. Wetlandicus, And S. Glaucus: Inferences From Morphology, Chloroplast Dna Sequences, And Aflp Markers, J. Mark Porter, Jennifer Cruse-Sanders, Linda Prince, Robert Lauri
Species Status Of Sclerocactus Brevispinus, S. Wetlandicus, And S. Glaucus: Inferences From Morphology, Chloroplast Dna Sequences, And Aflp Markers, J. Mark Porter, Jennifer Cruse-Sanders, Linda Prince, Robert Lauri
Aliso: A Journal of Systematic and Floristic Botany
We examine patterns of variation in 12 continuous morphological traits, chloroplast DNA sequences from 10 intergenic spacer regions (petA-psbJ, psbk-trnS, psbM-trnD, rpob-trnC, trnC-trnD, trnGCU-trnG2S, trnFM-trnUGA, atpF-atpH, trnT-trnD, trnQ-psbk), atpF, and rpl16, and Amplified Fragment Length Polymorphism (AFLP) genetic markers in Sclerocactus glaucus sensu lato (= S. brevispinus, S. glaucus, and S. wetlandicus), a complex that historically has been considered conspecific and afforded protection …
Kalinia, A New North American Genus For A Species Long Misplaced In Eragrostis (Poaceae, Chloridoideae), Hester L. Bell, J. Travis Columbus, Amanda L. Ingram
Kalinia, A New North American Genus For A Species Long Misplaced In Eragrostis (Poaceae, Chloridoideae), Hester L. Bell, J. Travis Columbus, Amanda L. Ingram
Aliso: A Journal of Systematic and Floristic Botany
Eragrostis obtusiflora (Poaceae, Chloridoideae), a species distributed from the southwestern United States to central Mexico, has long been recognized for exhibiting morphological and anatomical features atypical of Eragrostis. Phylogenetic analyses of nuclear internal transcribed spacer sequences and plastid sequences demonstrate that E. obtusiflora should be excluded from Eragrostis (Eragrostideae) and instead be placed in Cynodonteae, although its position within this tribe was unresolved. Additional data, including anatomical and micromorphological characters, suggest a close relationship with Distichlis. However, differences in spikelet and rhizome characters prevent its inclusion in Distichlis. Therefore, the species is transferred to a newly described …
A New Species Of Linanthus (Polemoniaceae) From San Bernardino County, California, Naomi S. Fraga, Duncan S. Bell
A New Species Of Linanthus (Polemoniaceae) From San Bernardino County, California, Naomi S. Fraga, Duncan S. Bell
Aliso: A Journal of Systematic and Floristic Botany
Linanthus bernardinus is described as new from San Bernardino County, California. It is morphologically similar to L. killipii and L. orcuttii subsp. pacificus but differs from plants of these taxa in height, corolla length, seed morphology, and habitat. Linanthus bernardinus can be found growing in vernally moist areas within Joshua tree woodland, often in shallow depressions, or on gentle slopes, in decomposed granite sand that is surrounded by large granite boulder fields.
Sequoiadendron Giganteum (Cupressaceae) At Lake Fulmor, Riverside County, California, Rudolf Schmid, Mena Schmid
Sequoiadendron Giganteum (Cupressaceae) At Lake Fulmor, Riverside County, California, Rudolf Schmid, Mena Schmid
Aliso: A Journal of Systematic and Floristic Botany
A GPS census made on 19 June 2012 of the Lake Fulmor area, northwestern San Jacinto Mountains, Riverside County, California, revealed seven trees of the Sierra Nevada endemic Sequoiadendron giganteum (Cupressaceae). The trees occur in a 234-meter-long narrow strip along the northwestern side of the lake. The population appears to be naturalizing. The largest tree (45 cm DBH, about 20 m tall), planted in 1980, is reproductively mature. Its six offspring to the northeast and southwest are 3–5 m tall and do not presently bear cones.
Floristic Diversity And Vegetation Analysis Of Wadi Al-Noman, Mecca, Saudi Arabia, Kadry Abdel Khalik, Mohamed El-Sheikh, Abeer El-Aidarous
Floristic Diversity And Vegetation Analysis Of Wadi Al-Noman, Mecca, Saudi Arabia, Kadry Abdel Khalik, Mohamed El-Sheikh, Abeer El-Aidarous
Turkish Journal of Botany
Wadi Al-Noman in Mecca is one of the most important wadis. It was included among the most important water sources where the springs and wells of Zobida run and it provides drinking water for the holy places in Mecca and visitors to the Kaaba and Arafat regions. The present study provides an analysis of floristic composition, vegetation types, and structure and species distribution at 20 sites, emphasising the environmental factors that affect species distribution. A total of 126 species representing 39 families of vascular plants are recorded. Fabaceae, Poaceae, and Boraginaceae are the largest families, and therophytes and chamaephytes are …
Minuartia Hamzaoglui (Caryophyllaceae), A New Species From Turkey, Murat Koç, Ahmet Aksoy
Minuartia Hamzaoglui (Caryophyllaceae), A New Species From Turkey, Murat Koç, Ahmet Aksoy
Turkish Journal of Botany
Minuartia hamzaoglui M.Koç & Aksoy (Caryophyllaceae) is described as a new species of sect. Minuartia in Turkey. The specimens were collected from Mount Erciyes (Kayseri). The new species is related to Minuartia erythrosepala (Boiss.) Hand.-Mazz. var. erythrosepala. M. hamzaoglui is an endemic species which has a distribution in Central Anatolia. The differences between the species are discussed. Description, distribution, illustration, and conservation status of the new species are given. Seed structures were examined by scanning electron microscopy.
Succession Of Epiphytic Bryophytes In Cedrus Libani Forest On The Meydan Plateau (Aladağ), Tülay Ezer, Recep Kara
Succession Of Epiphytic Bryophytes In Cedrus Libani Forest On The Meydan Plateau (Aladağ), Tülay Ezer, Recep Kara
Turkish Journal of Botany
The succession of epiphytic bryophytes was investigated in Cedrus libani A.Rich. forest on the Meydan Plateau (Aladağ). A total of 19 taxa (16 mosses, 3 liverworts) were recorded in 90 sampling relevés, 4 dm^2 each. Index of ecological significance (IES) was used to evaluate the ecological importance of the taxa in epiphytic habitats on tree trunks. Additionally, the epiphytic bryophyte succession of the cedar forest was analysed using multivariate classification techniques (TWINSPAN and DECORANA). The multivariate analysis results showed that the epiphytic bryophyte communities were divided into 2 main groups and 5 different subgroups associated with successional gradient. Moreover, habitat …
Comparative Foliar Micromorphological Studies Of Some Bauhinia (Leguminosae) Species, Susy Albert, Bhavna Sharma
Comparative Foliar Micromorphological Studies Of Some Bauhinia (Leguminosae) Species, Susy Albert, Bhavna Sharma
Turkish Journal of Botany
A comparative foliar epidermal micromorphology of 5 species of Bauhinia L. belonging to family Leguminosae (Fabaceae) was conducted with a view to elucidating their taxonomic significance and presenting complementary data to aid in the identification of the species. The epidermal cells in all species were polygonal with straight walls except in B. tomentosa L., which had an undulating outline. The stoma types were mainly anisocytic, anomocytic, and paracytic. Among the 5 species, B. blakeana L. was hypostomatic with anisocytic and paracytic stomata. Stomatal indices, frequencies, and sizes were determined. The frequency of stomata differed markedly between different species, with the …
Two New Records Of The Genus Orobanche (Orobanchaceae) From Turkey, Golshan Zare, Ali̇ Aslan Dönmez
Two New Records Of The Genus Orobanche (Orobanchaceae) From Turkey, Golshan Zare, Ali̇ Aslan Dönmez
Turkish Journal of Botany
Two new records of Orobanche L. have been added to the 37 species of this genus previously reported from Turkey. Orobanche owerini (Beck) Beck is reported as a new record to flora of Turkey for the first time, and the existence of O. reticulata Wall. that was mentioned as a doubtful record for Turkey has been confirmed. Macro- and micromorphology of the taxa are discussed, geographical distributions in Turkey are mapped, and details of their habitat, ecology, and taxonomic remarks of the studied taxa are provided.
Protective Role Of Foliar-Applied Nitric Oxide In Triticum Aestivum Under Saline Stress, Farhana Kausar, Muhammad Shahbaz, Muhammad Ashraf
Protective Role Of Foliar-Applied Nitric Oxide In Triticum Aestivum Under Saline Stress, Farhana Kausar, Muhammad Shahbaz, Muhammad Ashraf
Turkish Journal of Botany
A study was conducted to assess whether foliar-applied nitric oxide (NO) could alleviate the adverse effects of salt stress on wheat (Triticum aestivum L.). Four sodium nitroprusside levels (control [water spray] and 0.05, 0.10, and 0.15 mM) were sprayed as a donor of NO on the leaves of cultivar S-24 plants grown under nonsaline and saline conditions (150 mM NaCl). Data for growth and yield, chlorophyll contents, activities of antioxidants, and concentrations of mineral nutrients were recorded. Root-medium salinity adversely affected shoot and root dry weight, shoot length, and yield attributes of the wheat plants while it enhanced the activities …
Euglenozoa Occurring In Adzopé Reservoir, Côte D’Ivoire, Ble Alexis Tardy Kouassi, Allassane Ouattara, Kouhete Philippe Da
Euglenozoa Occurring In Adzopé Reservoir, Côte D’Ivoire, Ble Alexis Tardy Kouassi, Allassane Ouattara, Kouhete Philippe Da
Turkish Journal of Botany
The Euglenozoa flora of the Adzope Reservoir in Côte d'Ivoire was investigated from January to December 2005. The species composition of the assemblage was compiled, accompanied by illustrations. Forty-four taxa were identified in the temporal survey. Ten taxa (22.22%) are new for Côte d'Ivoire. The taxonomic structure presents 22.32% of the species common to the freshwater of West Africa, with most of the taxa (89.5%) found to be cosmopolitan. An endemic taxon, Trachelomonas pisciformis var. bicoronata Coute & Iltis (Euglenaceae), was observed. The assemblage was dominated by Trachelomonas Ehrenberg and Phacus Ehrenberg, which represented 47.72% and 29.54% of identified taxa, …
The Revision Of Genus Seseli (Umbelliferae) In Turkey, Ebru Doğan Güner, Hayri̇ Duman
The Revision Of Genus Seseli (Umbelliferae) In Turkey, Ebru Doğan Güner, Hayri̇ Duman
Turkish Journal of Botany
Seseli L. is represented by 12 taxa (species and subspecies) in the Flora of Turkey. On the basis of morphological examination and field investigation, we have revised the genus Seseli in Turkey. The following are provided for each taxon: a description, along with the complete synonymy and notes on nomenclature, geographical distribution, habitat, IUCN conservation status assessment, and selected materials examined. Two new species from Turkey, Seseli marashica E.Doğan & H.Duman and S. serpentina B.L.Burtt ex H.Duman & E.Doğan, are also described. One taxon is reduced to synonymy: S. paphlagonicum Pimenov & Kljuykov is a synonym of S. gummiferum Pallas …
A Contribution To Taxonomy Of Centaurea Including Psephellus (Asteraceae) Based On Anatomical And Molecular Data, Özhan Aydi̇n, Kami̇l Çoşkunçelebi̇, Mutlu Gültepe, Murat Erdem Güzel
A Contribution To Taxonomy Of Centaurea Including Psephellus (Asteraceae) Based On Anatomical And Molecular Data, Özhan Aydi̇n, Kami̇l Çoşkunçelebi̇, Mutlu Gültepe, Murat Erdem Güzel
Turkish Journal of Botany
Seven Centaurea L. s.l (Asteraceae) taxa endemic to Turkey were examined in terms of anatomical and molecular aspects to contribute to their taxonomic positions. Numerical analysis of the 13 anatomical traits showed that average row number of collenchyma and the arrangements of the vascular bundles in the stem, leaf type, and abaxial surface of leaf epidermal tissue were important to determine the investigated taxa. It was also found that the 7 investigated taxa were grouped into 2 distinct clusters based on anatomical traits and combined nrDNAITS/cpDNA data.
Weed Flora In The Reclaimed Lands Along The Northern Sector Of The Nile Valley In Egypt, Monier Abd El-Ghani, Ashraf Soliman, Rim Hamdy, Ebtesam Bennoba
Weed Flora In The Reclaimed Lands Along The Northern Sector Of The Nile Valley In Egypt, Monier Abd El-Ghani, Ashraf Soliman, Rim Hamdy, Ebtesam Bennoba
Turkish Journal of Botany
Deserts comprise about 95% of the total land surface of Egypt; therefore, their potential for production must be assessed. Weed communities are mainly affected by the environment, and studies may increase our knowledge of the relationship among the weed flora, soil properties, crop rotation, soil management, fertiliser usage, and weed control. The area under study is one of the most recently reclaimed lands. The recorded 150 species in the monitored 19 sites were distributed within 33 families. The species-rich families were: Poaceae (31), Asteraceae (23), Brassicaceae (13), Chenopodiaceae (12), and Fabaceae (12). Chorological analysis revealed that the widely distributed species …
Effects Of Exogenous Methyl Jasmonate And 2-Isopentenyladenine On Artemisinin Production And Gene Expression In Artemisia Annua, Mahboobeh Zare Mehrjerdi, Mohammad Reza Bihamta, Mansoor Omidi, Mohammad Reza Naghavi, Hassan Soltanloo, Mojtaba Ranjbar
Effects Of Exogenous Methyl Jasmonate And 2-Isopentenyladenine On Artemisinin Production And Gene Expression In Artemisia Annua, Mahboobeh Zare Mehrjerdi, Mohammad Reza Bihamta, Mansoor Omidi, Mohammad Reza Naghavi, Hassan Soltanloo, Mojtaba Ranjbar
Turkish Journal of Botany
Artemisinin, produced in very low amounts in Artemisia annua L. plants, is one of the most effective drugs in treating malaria. In this study, the effect of exogenous applications of methyl jasmonate (MeJA) and 2-isopentenyladenine (2-iP) in artemisinin production and the main genes of its biosynthesis pathway within a 1-week time period were investigated. Both MeJA and 2-iP increased artemisinin content, but no correlation was found between gene expression and its content. In plants treated with 2-iP, despite increased gene expression following elicitor application, downregulation of gene expression was also observed, which might be attributed to the negative effects of …
Seed Micromorphological Survey Of The Minuartia Species (Caryophyllaceae) In Iran, Golaleh Mostafavi, Mostafa Assadi, Taher Nejadsattari, Fariba Sharifnia, Iraj Mehregan
Seed Micromorphological Survey Of The Minuartia Species (Caryophyllaceae) In Iran, Golaleh Mostafavi, Mostafa Assadi, Taher Nejadsattari, Fariba Sharifnia, Iraj Mehregan
Turkish Journal of Botany
Seed micromorphology of 20 species of Minuartia L. (Caryophyllaceae) that represent 2 different subgenera (i.e. Minuartia subgen. Spergella (Fenzl) McNeill and Minuartia subgen. Minuartia) were examined using scanning electron microscopy. Some qualitative and quantitative characters such as seed length and width, seed shape, cell shape, and cell ornamentations were studied. The results showed that seed micromorphology might provide useful tools in recognition and separation of Minuartia hamata (Hausskn.) Mattf. from other species of sect. Minuartia. Minuartia khorassanica Assadi & Mostafavi, a recently described species from Iran, is another species that micromorphologically was quite different. The species M. juniperina (L.) Maire …
Seasonal Changes Of Inorganic And Organic Osmolyte Content In Three Endemic Limonium Species Of Lake Tuz (Turkey), Gökçen Baysal Furtana, Hayri̇ Duman, Ruki̇ye Tipirdamaz
Seasonal Changes Of Inorganic And Organic Osmolyte Content In Three Endemic Limonium Species Of Lake Tuz (Turkey), Gökçen Baysal Furtana, Hayri̇ Duman, Ruki̇ye Tipirdamaz
Turkish Journal of Botany
The levels of inorganic (Na^+, K^+, Ca^+^2, Mg^+^2, Cl^-) and organic (proline, carbohydrates) osmolytes and quaternary ammonium compounds were measured in 3 endemic Limonium Mill. species [L. lilacinum (Boiss. & Bal.) Wagenitz, L. iconicum (Boiss. & Heldr.) Kuntze, and L. anatolicum Hedge] of Lake Tuz in central Anatolia, Turkey. Samples were collected between May and October from plants growing in their natural habitats. Soil samples also were taken from the plant root zone at the time of plant sampling. The results of pH, electrical conductivity (EC) values, and mineral composition in the soil showed seasonal changes. The highest EC and …
Vegetation And Soil Relationships In The Inland Wadi Ecosystem Of Central Eastern Desert, Egypt, Fawzy Salama, Monier Abd El-Ghani, Noha El-Tayeh
Vegetation And Soil Relationships In The Inland Wadi Ecosystem Of Central Eastern Desert, Egypt, Fawzy Salama, Monier Abd El-Ghani, Noha El-Tayeh
Turkish Journal of Botany
In January 2010, torrential rains that had suddenly swept away a limited area in the Eastern Desert facing Qena Province in Upper Egypt resulted in the enriching of the vegetation of some extremely dry wadis at this location. A vegetation survey carried out shortly after this event, in April, revealed the prevalence of annuals in considerable abundance, which are hardly recognisable in such usually dry habitats. The normally scarce perennial vegetation had flourished, too. A total of 32 species, 11 annuals, and 21 perennials that belong to 27 genera and 15 families were recorded. The life-form spectrum in the present …
Characterisation Of Synthetically Developed Cry1ab Gene In Transgenic Tobacco Chloroplasts, Safdar Ali Mirza, Muhammad Sarwar Khan
Characterisation Of Synthetically Developed Cry1ab Gene In Transgenic Tobacco Chloroplasts, Safdar Ali Mirza, Muhammad Sarwar Khan
Turkish Journal of Botany
Synthetic cry1Ab gene was developed with optimised codons and expressed in the tobacco plastome. Characterisation of the synthetic cry1Ab gene was carried out on homoplasmic transgenic shoots. To purify the homoplasmic shoots, the proliferating heteroplasmic shoots were subjected to various rounds of selection and regeneration on spectinomycin-containing regeneration medium of plant medium. The PCR-screened homoplasmic shoots were placed on MS medium for root induction and proliferation. The functionally expressed CRY protein was detected using ImmunoStrips, and the amount of toxin protein in transplastomic tobacco plants was measured by DAS-ELISA, specific for cry1Ab gene product. The accumulation of Bacillus thuringiensis (Bt) …
Exploring The Potential Of Moringa Oleifera Leaf Extract (Mle) As A Seed Priming Agent In Improving Wheat Performance, Azra Yasmeen, Shahzad Maqsood Ahmed Basra, Abdul Wahid, Wasif Nouman, Hafeez Ur Rehman
Exploring The Potential Of Moringa Oleifera Leaf Extract (Mle) As A Seed Priming Agent In Improving Wheat Performance, Azra Yasmeen, Shahzad Maqsood Ahmed Basra, Abdul Wahid, Wasif Nouman, Hafeez Ur Rehman
Turkish Journal of Botany
Seed priming with plant extracts and chemicals has been used as an important growth enhancement tool in crop plants; however, the mechanisms of their action are not fully explored. In this research, an attempt was made to understand the mechanism of various seed priming treatments in greenhouse-grown wheat. The seed priming treatments used were hydropriming, on-farm priming, moringa (Moringa oleifera Lam.) leaf extract (MLE) priming, and CaCl_2 priming. Results showed that all the seed priming treatments were effective in improving germination and seedling growth attributes of wheat over the control. However, MLE followed by CaCl_2 emerged as the most effective …
Improved Technique For Treating Seed Dormancy To Enhance Germination In Rosa × Hybrida, Muhammad Nadeem, Atif Riaz, Adnan Younis, Masum Akond, Amjad Farooq, Usman Tariq
Improved Technique For Treating Seed Dormancy To Enhance Germination In Rosa × Hybrida, Muhammad Nadeem, Atif Riaz, Adnan Younis, Masum Akond, Amjad Farooq, Usman Tariq
Turkish Journal of Botany
Rose breeders need reliable and efficient germination protocols to exploit all viable embryos in their breeding programs. In this study, different treatment combinations were assessed to overcome the mechanical resistance of the pericarp and enhance germination of rose seeds obtained from hybridisation among hybrids roses. In the 3 treatments, 30 days of a warm temperature followed by 60 days of cold stratification and 30% sulphuric acid treatment for 10 min proved more effective in getting higher seed germination (18.54%) and seed vigour index (261.18) of the progenies. This led to lower germination (18.20 days) and imbibition (23.64) periods with respect …
Gamma-Induced Infraspecific Polyploidy Via Cytomixis-Mediated Syncyte Formation In Papaver Somniferum (Papaveraceae), Girjesh Kumar, Sana Naseem
Gamma-Induced Infraspecific Polyploidy Via Cytomixis-Mediated Syncyte Formation In Papaver Somniferum (Papaveraceae), Girjesh Kumar, Sana Naseem
Turkish Journal of Botany
This is the first report on the phenomenon of syncyte manifestation through cytomictic transmigration in Papaver somniferum L. The occurrence characteristics and cytological depictions of cytomixis in the meiotic course of gamma-irradiated population reveal the mechanism leading to the origin of the cell fusions/syncytes. The event was more frequent in meiosis I and rare in meiosis II, indicating that the process atrophies at the end of the first meiotic division. The degree of occurrence of the phenomenon virtually concurred with the increase in the treatment dose of gamma irradiation. The phenomenon also affected the qualitative composition of postmeiotic products, i.e. …
Comparative Anatomy Of The Needles Of Abies Koreana And Its Related Species, Ju-Kyeong Eo, Jung-Oh Hyun
Comparative Anatomy Of The Needles Of Abies Koreana And Its Related Species, Ju-Kyeong Eo, Jung-Oh Hyun
Turkish Journal of Botany
The morphological traits of the resin duct of the needle leaves of Abies koreana E.H.Wilson, an endemic species of Korea, and its related species were analysed. The quantitative traits of the resin ducts from 289 individuals were measured, and the observed resin duct types were compared with previous studies. As a result, each characteristic of the resin duct showed some clinal variations with latitude changes. The variations had extreme values in A. nephrolepis (Trautv.) Maxim. on Mt. Sikhote-Alin (Russia) and in A. koreana on Mt. Halla (Korea). In addition, it was difficult to suggest just one type of resin duct …