نتایج جستجو برای: chromosome number

تعداد نتایج: 1270469  

Journal: :زیست شناسی جانوری تجربی 0

abstract to identify the species, understanding the characteristics of the species, explore the possibility of speciation, mutations in the study population, and many other purposes. in this method for studying colchesin bath, karyotype use for immature worms. after reviewing the slide karyotype of polychaeta (nereis sp.) and observation and analysis of  50  plaque metaphase plate chromosome nu...

Journal: :به نژادی گیاهان زراعی و باغی 0
عباس یداللهی استادیار گروه علوم باغبانی، دانشکدة کشاورزی، دانشگاه تربیت مدرس عطیه میان ‏محله دانشجوی سابق کارشناسی ارشد گروه علوم باغبانی، دانشکدة کشاورزی، دانشگاه تربیت مدرس عبدالعلی شجاعیان استادیار گروه علوم باغبانی، دانشکدة کشاورزی، دانشگاه تربیت مدرس

karyotypes of eleven iranian populations of trigonella foenum-graceum were investigated. somatic chromosome numbers of examined populations were determined as 2n = 14. chromosomal parameters were examined as follows: long arm length (tl), short arm, total chromosome length, arm ratio, r-value, form percentage of chromosome, total form percentage of karyotype. chromosomes were mostly metacentric...

Journal: :journal of sciences islamic republic of iran 0

eleven populations of five avena species were analysed for meiotic characters including chiasma frequency and distribution as well as chromosomal association and segregation. plants of a single population of a. eriantha showed the presence of 2n = 14 (diploid) and 2n = 4x = 28 chromosome number. populations of a. barbata and a. wiestii possessed n = 14, while populations of a. sterilis ssp. lud...

Journal: :The Japanese Journal of Genetics 1930

This study concerns the cytotaxonomic investigations on twelve species belonging to three sections from the genus Vicia in Iran. A taxonomic background of the genus is given in brief. The previous counts reported for the genus in Index to plant chromosome number are summarized. In addition to one new count, the chromosome numbers of four species are reported for the first time. Briefly, the ...

Journal: :Acta Societatis Botanicorum Poloniae 2017

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