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:: Volume 21, Issue 1 (Spring 2019 2019) ::
علوم زراعی 2019, 21(1): 1-15 Back to browse issues page
Estimation of combining ability and gene action in selected maize (Zea mays L.) lines
Afshin Mosavat , Hojatollah Mazahery-Laghab , Hassan Soltanloo , Rajab Choukan
Former PhD Student of Bu-Ali Sina University, Hamadan, Iran and Research Assistant of Prof., Agronomy & Horticulture Research Department, Golestan Agricultural and Natural Resources Research and Education Center, Agricultural Research, Education and Extension Organization (AREEO), Gorgan, Iran
Abstract:   (3223 Views)
Maize is one of the most important grain and forage crop, that has a unique role in the food and feed industry, especially poultry feed. To estimate combinig ability and gene action and to identify the best hybrid combination for different morphological traits, experiments were designed and carried out as diallel crossing with 10 parents at Gorgan Agricultural Research Station, Gorgan, Iran, in 2013. The progenies were grown in randomized complete block design with three replications in two locations including; Araghi-Mahaleh in Gorganand Gonbad Agricultural Research Stations in Gonbad, Iran, in 2014. Data for days from emergence to silking, days from silking to physiological maturity, number of row.ear-1, grain yield, plant height and number of grain.ear-1, were measured and recorded. Analysis of variance was performed separately for each location, and then combined analysis of variance was also performed. The effects of general combining ability (GCA) and specific combining ability (SCA) were significant on most traits, which implied that both additive and non-additive actions were involved in controlling these traits. The dominance degree was greater than one also indicated that the over-dominance of genes action in controlling the studied traits.For all studied traits, low narrow sense heritability and a greater dominance variance indicated that dominance actions was more important in genetic control of these traits. Therefore, to improve traits such as days from silking to physiological maturity and number of row.ear-1 selection would not be efficient, and hybridization methods should be used for development and improvement of maize germplasm.

 
Keywords: Combining ability, Genetic control, Heritability and Maize lines.
Full-Text [PDF 769 kb]   (1138 Downloads)    
Type of Study: Scientific & Research | Subject: Special
Received: 2019/06/3 | Accepted: 2019/06/3 | Published: 2019/06/3
References
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Mosavat A, Mazahery-Laghab H, Soltanloo H, Choukan R. Estimation of combining ability and gene action in selected maize (Zea mays L.) lines. علوم زراعی 2019; 21 (1) :1-15
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Volume 21, Issue 1 (Spring 2019 2019) Back to browse issues page
نشریه علوم زراعی ایران Iranian Journal of Crop Sciences
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