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                                       Details van artikel 10 van 19 gevonden artikelen
 
 
  Gene Effects and Combining Ability in Some Bread Wheat Genotypes to Yellow Rust Disease
 
 
Titel: Gene Effects and Combining Ability in Some Bread Wheat Genotypes to Yellow Rust Disease
Auteur: A.R. Razavi
M. Taeb
F. Afshari
S. Khavari
M. Abbaspoor
Verschenen in: Pakistan journal of biological sciences
Paginering: Jaargang 12 (2009) nr. 2 pagina's 146-151
Jaar: 2009
Inhoud: Ten wheat lines were studied to determine gene effects and combining ability in some bread wheat genotypes to yellow rust disease. Ten parental lines and F1 were evaluated in a randomized complete block design with three replications in Agricultural and Natural Resources Research Center, Mashhad, Iran. Two races (134E134A+ and 4E0A+) were used for this study. Latent Period (LP) and Infection Type (IT) were measured in the field and greenhouse. Results showed significant differences between races in their pathogenicity and between genotypes in their resistance to the pathogen. Diallel cross carried out between the parents and progenies and thereafter were analyzed by the method of Griffing and Haymans. The General Combining Ability (GCA) and Special Combining Ability (SCA) for all traits were significant and showed additive variance was more important. Test for validity of diallel hypothesis proved epistasis effect for all traits. P1, P2 and F1 showed significant difference between all traits in generations mean analysis. Average degree of dominance ranged from partial to over dominance for resistance or susceptibility. Dominance, additive and epistatic types of gene action were responsible for the genetic control of the traits. However, except for additive-additive component, non-additive effect of genes could not be fixed by self-fertilization.
Uitgever: Asian Network for Scientific Information (provided by DOAJ)
Bronbestand: Elektronische Wetenschappelijke Tijdschriften
 
 

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