نتایج جستجو برای: characters segregation

تعداد نتایج: 70340  

Journal: :Genetics 1943
M R Irwin R W Cumley

MMUNOLOGICAL methods have so often been employed as a means of I differentiating species, particularly in animals but also in plants, that it is almost a truism to state that antigenic differences are one of the more important criteria by which qualitative differences between species may be assayed. In animal species, the serum antigens have been somewhat more widely used in such comparisons th...

Journal: :Communications materials 2023

Abstract As high-entropy alloys receive an increasing amount of attention, interesting scientific question arises: can grain boundaries be “high entropy”? In 2016, we proposed “high-entropy boundaries” as the boundary counterparts to materials. Here, discuss underlying interfacial thermodynamics elaborate relevant concepts. We emphasize that are neither equivalent in materials nor simply “compo...

  Abstract. Spatial has always been an inherent component of demography, and demographic processes are inherently spatiotemporal. Recognizing the importance of spatial in general and spatial segregation in particular in demographic analysis has created new positions in demography and its conceptual and analytical frameworks. The notion of spatial segregation refers to the distribution of social...

باباییان جلودار, نادعلی, رنجبر, غلامعلی, نوروزی, محمد, کاظمی تبار, سید کمال, کیانی, شعله ,

In order to study gene action in rice for traits related to quality (gelatinization temperature, gel consistency and amylose content), four varieties of rice (Sang-e-Tarrom, Gerdeh, IRRI2 and IR229) were investigated. Ten different generations including P1, P2, F1, RF1, BC1, RBC1, BC2, RBC2, F2 and RF2 were evaluated using generation mean analysis. In generation mean analysis, one of non-alleli...

E. Khosravi, M. Khodambashi Sh. Mohammadi

Monogenic inheritance and linkage among four morphological traits of lentil were established on the basis of F1 observations and analysis of 204 F2 plants in a cross for development of pubescence on peduncle, 228 F2 plants in a cross for tendril formation, 574 F2 plants in 5 crosses for flower numbers per peduncle and 464 F2 plants in 4 crosses for flower color under field conditions. Developme...

ژورنال: علوم آب و خاک 2009
باباییان جلودار, نادعلی, رنجبر, غلامعلی, نوروزی, محمد, کاظمی تبار, سید کمال, کیانی, شعله ,

In order to study gene action in rice for traits related to quality (gelatinization temperature, gel consistency and amylose content), four varieties of rice (Sang-e-Tarrom, Gerdeh, IRRI2 and IR229) were investigated. Ten different generations including P1, P2, F1, RF1, BC1, RBC1, BC2, RBC2, F2 and RF2 were evaluated using generation mean analysis. In generation mean analysis, one of non-alleli...

2003
D. P. Croft B. J. Arrowsmith J. Bielby K. Skinner E. White I. D. Couzin A. E. Magurran I. Ramnarine

Free-ranging groups are frequently assorted by phenotypic characters. However, very little is known about the underlying processes that determine this structuring. In this study, we investigate the mechanisms underlying the phenotypic composition of shoals of guppies (Poecilia reticulata) in a high-predation stream in Trinidad’s Northern Mountain Range. We collected 57 entire wild shoals, which...

2017
K. Bachmann

Segregation for 289 random amplified polymorphic DNA markers (RAPDs) has been determined in 106 F z plants of an interspecific hybrid (H27) between M icro~eris douglasii (strain B14) and M. bigelovii (C94). Multicelluar trichomes ("type D", specific for Microseris) occur on the leaf teeth of early vegetative rosettes of the B 14 parent and on the leaf blades of later rosettes in both parents. T...

2009
Miguel Hermida Eduardo San Miguel Carmen Bouza Jaime Castro Paulino Martínez

The aim of this study was to analyze the morphological variation of brown trout (Salmo trutta) in the Duero basin, an Atlantic river basin in the Iberian Peninsula, where a spatial segregation of two divergent lineages was previously reported, based on isozyme, microsatellite and mtDNA data. In these studies, two divergent pure regions (Pisuerga and Lower-course) and several hybrid populations ...

Journal: :به نژادی گیاهان زراعی و باغی 0
مسلم بهمن کار دانشگاه تهران، پردیس ابوریحان، گروه علوم زراعی و اصلاح نباتات،دانشجوی دکترای اصلاح نباتات-ژنتیک بیومتری سید احمد سادات نوری استاد گروه علوم زراعی و اصلاح نباتات، پردیس ابوریحان، دانشگاه تهران، پاکدشت، ایران محمد مهدی مرتضویان استادیار گروه علوم زراعی و اصلاح نباتات، پردیس ابوریحان، دانشگاه تهران، پاکدشت، ایران

sometimes when hybridization in quantitative traits due to occurring of transgressive segregation phenomena in f2 and other generations, phenotypes are observed that are outside the scope of their parents. transgressive segregates can be fixed via selfing and selection. classical genetic and qtl studies know complementary action of genes as the main reason for the occurrence of the above phenom...

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