Studies on gene action and combining ability of cytoplasmic-genic male sterile hybrids in pigeonpea [Cajanus cajan (L.) Millsp.]

Pandey, P. and Tiwari, D. and Pandey, V.R. and Yadav, S. (2014) Studies on gene action and combining ability of cytoplasmic-genic male sterile hybrids in pigeonpea [Cajanus cajan (L.) Millsp.]. Australian Journal of Crop Science, 8 (5). pp. 814-821.

[img] PDF - Published Version
Restricted to ICRISAT researchers only

Request a copy


To recognize proper parents for hybrid pigeonpea inheritance pattern of some polygenic traits was studied. The results showed that estimates of SCA variance were higher than their corresponding GCA variance for all the traits except plant height. The values of average degree of dominance were more than unity (>1) and predictability ratio was less than unity (<1) for all the traits except plant height, signifying non-additive gene action which resulted from dominance, over dominance, epistatic and various other interaction effects. Predominance of non-additive effects specifies that population is heterozygous, as such this type of genetic variance is non-fixable. Hence, heterosis breeding is effective for increasing yield potential of pigeonpea. On the basis of general combining ability, the male lines ICP 2309, NDA 2, NDA 3, NDA 96-6, NDA 98-6 and, ICP 2155 and CMS line NDACMS 1-6A were found most promising parents for yield and its major attributes. The crosses, NDACMS 1-4A x NDA GC 31, NDACMS 1-6A x NDA 5-14, NDACMS 1-6A x NDA 8-6, NDACMS 1-4A x IPA 208, NDACMS 1-3A x NDA 98-6, NDACMS 1-4A x Bahar, NDACMS 1-6A x NDA 96-1, NDACMS 1-4A x Amar had high estimates for parents and good specific combining ability effects, hence, it may be considered for hybrid breeding programme

Item Type: Article
Uncontrolled Keywords: Pigeonpea [Cajanus cajan (L.) Millsp.], gene effects, combining ability, GCA and SCA variances
Author Affiliation: Department of Genetics and Plant Breeding, Narendra Deva University of Agriculture and Technology, Kumarganj, Faizabad - 224 229, U.P., India
Subjects: Plant Production
Divisions: Pigeonpea
Depositing User: Mr T L Gautham
Date Deposited: 30 Dec 2015 07:57
Last Modified: 30 Dec 2015 07:57

Actions (login required)

View Item View Item