GrainGenes Reference Report: IGP-64-63
Reference
IGP-64-63
Title
Non-allelic interactions for yield and its components in hexaploid wheat (Triticum aestivum (L.) em. Thell)
Journal
Indian Journal of Genetics and Plant Breeding
Year
2004
Volume
64
Pages
63-64
Author
Joshi SK Sharma SN Sain RS
Abstract
General (GCA) and specific combining ability (SCA) were assessed in 10 hexaploid wheat cultivars (Raj 3077, CPAN 3004, HD 2428, Lok-1, Durgapura 65, Raj 1972, Sonalika, HD 2329, HD 2285 and WH 157) and their crosses. All 10 parents were crossed in all possible combinations excluding reciprocals, and the parents and their resulting 45 F1 and 45 F2 were grown at Tabiji, Ajmer, Rajasthan, India. Data were recorded for days to heading, days to maturity, plant height, flag leaf area, tillers per plant, spike length, grain yield per spike, grains per spike, 1000-grain weight, harvest index, grain yield per plant and protein content. Analysis of variance revealed highly significant GCA and SCA effects for all traits. However, the GCA:SCA ratio tilted normally in favour of GCA in all traits, except for 1000-grain weight, in both the F1 and F2 generations, indicating the preponderance of additive effects in the genetic control of these traits. Estimates of GCA effects showed that Durgapura 65, HD 2285, Lok-1, Raj 1972 and HD 2329 were the best general combiners for grain yield and good to average combiners for most of the yield-related traits. Estimates of SCA effects showed that 15 crosses in F1 and 18 crosses in F2 were good specific combiners for grain yield; 13 crosses showed positive and significant SCA effects for grain yield in both generations
Keyword
GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture.
GrainGenes Reference Report: IGP-64-63
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GrainGenes is a product of the Agricultural Research Service of the US Department of Agriculture. | |||