نتایج جستجو برای: additive genetic effects to develop superior hybrids in melons

تعداد نتایج: 18935474  

Journal: Desert 2018
A.R. Kiani F. Ghanbari M.R. Abdollahi S.S. Moosavi,

     Improved drought-tolerant maize hybrids would significantly reduce water consumption and increase yield in arid environments. Our knowledge about genetic parameters is very essential before starting a successful breeding program. The present research was carried out throughout three successive years between 2013-15 to reveal the pattern of inheritance in yield, yield-components and related...

Abstract Determination of gene effects and combining abilities is a critical stage in maize hybrid breeding. In the present study, 20 S6 lines as female and three S6 inbred lines (K18, K19 and K1264/5-1) as tester were crossed and the resulting  test cross progenies were evaluated in a randomized complete block design with three replications in 2008. During the growing period, several agronomi...

ژورنال: علوم آب و خاک 2008
ارزانی, احمد , فراهانی , الهام ,

  An experiment was conducted to investigate the heterosis in 12 F1 hybrids of durum wheat using agronomic and morphological traits. Parents were selected according to the estimated genetic distances based on the results of a two-year field experiment, which were then crossed to produce F1 hybrids. Twenty-three genotypes (including 11 parents and 12 hybrids) were evaluated using a randomized co...

Journal: :Ciencia E Agrotecnologia 2021

ABSTRACT Knowledge of the combining ability genotypes, genetic diversity, and heterosis play paramount role in obtaining double-cross hybrids with high productivity. This study was aimed at evaluating these parameters tomato genotypes using partial diallel crosses among commercial single-cross hybrids, which verified possibility for purposes. Tomato included 15 their genitors, two as checks. Of...

مرادی, محمد, چوگان, رجب,

This study was carried out in order to investigate the genetic structure of the F1 hybrids along with their parents (6 inbred lines) evaluated in field under normal and water stress regimes to determine the nature and magnitude of genetic variances and heritability estimates at dezful research station in safi abad, from 2012, using RCBD with three replications. Results analysis of variance show...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه مازندران - دانشکده علوم انسانی و اجتماعی 1391

the present study aimed to investigate the possible effects of focused highlighted error feedback on grammatical accuracy of writing among iranian intermediate efl learners. after selecting 52 homogenous participants from among 70 university students attending azad university of rasht and randomly dividing them into two intact groups of 26 students, the researcher exposed the participants of th...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه شیراز - دانشکده ادبیات و علوم انسانی 1392

the purpose of this study is to investigate and explore the causes of identity crisis as one of the debilitating consequences of colonial project after the withdrawal of colonial power. in order to do justice to the full-length severity of displacement that was the fruit of indentureship, v. s. naipauls west indian epic, a house for mr biswas, has been scrutinized with the main focus being the ...

Journal: :Genetics 2007
J C Reif F-M Gumpert S Fischer A E Melchinger

We present a theoretical proof that the ratio of the dominance vs. the additive variance decreases with increasing genetic divergence between two populations. While the dominance variance is the major component of the variance due to specific combining ability (sigma(SCA)(2)), the additive variance is the major component of the variance due to general combining ability (sigma(GCA)(2)). Therefor...

Journal: :علوم دامی ایران 0
ابوالقاسم سراج دانشجوی دکتری دانشکده کشاورزی دانشگاه تربیت مدرس رسول واعظ ترشیزی استادیار دانشکده کشاورزی دانشگاه تربیت مدرس عباس پاکدل استادیار پردیس کشاورزی و منابع طبیعی دانشگاه تهران

influence of maternal and sire-generation interaction effects on day-old chick' weight was investigated in two commercial broiler sire and dam lines, and in mazandaran native fowls. the data were analysed through restricted maximum likelihood (reml) procedures, using asreml software. ten different animal models were implemented and compared with likelihood ratio test. all models consisted ...

پایان نامه :دانشگاه آزاد اسلامی - دانشگاه آزاد اسلامی واحد تهران مرکزی - دانشکده برق و الکترونیک 1390

there are many approaches for solving variety combinatorial optimization problems (np-compelete) that devided to exact solutions and approximate solutions. exact methods can only be used for very small size instances due to their expontional search space. for real-world problems, we have to employ approximate methods such as evolutionary algorithms (eas) that find a near-optimal solution in a r...

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