نتایج جستجو برای: ratios of genetic variation and environmental variation

تعداد نتایج: 24110272  

2017
Randall J. Mitchell RANDALL J. MITCHELL

Although floral and extrafloral nectar traits are important for plant reproduction and defense, we know little about their genetic basis. Only a handful of studies have quantified heritable variation for nectar traits, primarily in controlled environments that minimize environmental variation. Most such studies have reported strong genetic influences, with heritabilities often .0.35. However, b...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - دانشکده مهندسی 1387

abstract this paper discusses several commonly used models for strategic marketing¹ including market environmental analysis methods (i.e. swot and pest analysis) and strategic marketing tools and techniques (i.e. boston matrix and shell directional policy matrix)and shows how these models may help a firm to achieve its strategic goals. at first, the main reason for doing this research is de...

Journal: :journal of plant molecular breeding 2013
mozhgan abtahi ahmad arzani

mutation induction is considered as an effective way to enrich plant genetic variation, particularly fortraits with a very low level of genetic variation. this research was conducted to assess genetic variationinduced by gamma radiation in m2 and m3 mutant lines of canola (brassica napus l.) by ssr and morphologicalcharacteristics and to identify useful mutants in terms of agronomic traits. six...

صالحی, مینا,

  Estimation of genetic variation is very important in breeding programs and existing of high genetic variation lead to increase the response to selection. The objective of this study was to investigate genetic variation for agronomic traits and yield components in 20 entries of sesame including 15 breeding lines and 5 local populations. The genotypes were evaluated in a randomized complete blo...

Journal: :چغندرقند 0
ساسان کشاورز کارشناس ارشد اصلاح نباتات از دانشگاه آزاد اسلامی واحد کرج محمود مصباح عضو هیئت علمی مؤسسه تحقیقات چغندرقند ذبیح اله رنجی عضو هیئت علمی مؤسسه تحقیقات چغندرقند رضا امیری کارشناس ارشد مؤسسه تحقیقات چغندرقند

to perform stability analysis and study g*e interaction, eight commercial sugar beet varieties were evaluated in eight major sugar beet producing areas of karaj, mashad, miandoab, esfahan, shiraz, kermanshah, moghan and hamadan in three years using a randomized complete block design with four replications. the evaluated varieties were br1, 7233, pp.8, ic, 7233-p29, pp22, h5505 and 41rt. having ...

Journal: :crop breeding journal 2011
h. zali e. farshadfar s. h. sabaghpour

to determine the association between genetic parameters and traits in chickpea (cicer arietinum l.) genotypes, a field experiment was conducted with 17 chickpea genotypes using a randomized complete block design with four replications at the ilam agricultural and natural resources research center in the 2004 growing season. genetic parameters including genetic, environmental and phenotypic vari...

Journal: :iranian journal of public health 0
dd farhud m zarif yeganeh

the nutrients are able to interact with molecular mechanisms and modulate the physiological functions in the body. the nutri­tional genomics focuses on the interaction between bioactive food components and the genome, which includes nutrigenet­ics and nutrigenomics. the influence of nutrients on f genes expression is called nutrigenomics, while the heterogene­ous response of gene variants to nu...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تبریز - دانشکده کشاورزی 1394

with the increasing population and the need for more food, as well as with the development of science and technology, human approach to unnatural and often chemical inputs to increase agricultural production has been a great expansion and problems such as increased cancers, chronic diseases has created environmental pollution. implementation of organic organic is a solution to these problems . ...

Safflower (Carthamus tinctorius L.) is an only oilseed crop which, is native to Iran where, is known as its diversity center. The genetic variation study provides valuable information about maintenance and their usage of germplasm for breeders to increase efficiency of breeding programs. In the current study, sixty-four genotypes were assessed for 20 agronomic nag morphological traits for genet...

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