Combining ability of some sorghum lines for dry lands and sub-humid environments of East Africa

Ringo, J and Beatrice, W and Mary, M and Deshpande, S and Rathore, A and Mneney, E and Onkware, A and Gudu, S (2015) Combining ability of some sorghum lines for dry lands and sub-humid environments of East Africa. African Journal of Agricultural Research, 10 (19). pp. 2048-2060. ISSN 1991-637X

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Abstract

Sorghum (Sorghum bicolor L. Moench) is a major food crop grown in dry lands and sub-humid areas of East Africa. A study was conducted between 2010 to 2012 in dry lands (Miwaleni, Kiboko) and sub-humid (Ukiriguru) environments to identify parents for hybrid production. It involved 121 lines from ICRISAT and 121 hybrids developed from 36 male sterile lines and 42 restorer lines in a line × tester crossing. Experiments were planted in an alpha lattice design with three replications. Analysis revealed significant (P < 0.05) differences between parents and between crosses for yield and yield components, indicative of potentiality for exploitation. Line IESV23010 expressed best (-6.5) general combing ability (GCA) for days to 50% flowering (DAF). Highest general combiner for height was -55.4 expressed in ICSR24007 and for yield was 382.8 expressed in IESV92156DL. The crosses SDSA4×ICSR43 and SDSA4×ICSR59059 exhibited high and significant specific combining ability (SCA) for DAF. Lines IESB2 and ICSB44 were suited to sub-humid, whereas BTX623, ICSB15 and ICSB6 to dry lands environments. Testers IESV91104DL, IESV91131DL, ICSR93034 were well suited to dry lands whereas KARI-MTAMA1 and IESV23019 to sub-humid environments. The parents identified could be used to produce hybrids and varieties for the dry lands and sub-humid environments.

Item Type: Article
Divisions: RP-Dryland Cereals
CRPS: CGIAR Research Program on Dryland Cereals
Uncontrolled Keywords: Combining ability, Lines, Restorers, Sorghum, Top-cross hybrids, East Africa
Subjects: Mandate crops > Sorghum
Depositing User: Mr Ramesh K
Date Deposited: 13 Apr 2016 10:12
Last Modified: 13 Apr 2016 10:12
URI: http://oar.icrisat.org/id/eprint/9425
Official URL: http://dx.doi.org/10.5897/AJAR2014.8519
Projects: UNSPECIFIED
Funders: UNSPECIFIED
Acknowledgement: The authors are grateful to ICRISAT through Harnessing Opportunities for Product Enhancement (HOPE) Project for providing sorghum materials and financing this research.
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