Inheritance studies on grain iron and zinc concentration and agronomic traits in sorghum [Sorghum bicolor (L.) Moench]

Gaddameedi, A and Ravikiran, K T and Mohammed, R and Phuke, R M and Sadaiah, K and Kavi Kishor, P B and Ashok Kumar, A (2018) Inheritance studies on grain iron and zinc concentration and agronomic traits in sorghum [Sorghum bicolor (L.) Moench]. Journal of Cereal Science (TSI). pp. 252-258. ISSN 07335210

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Abstract

Sorghum is a major staple globally and biofortifying sorghum with increased grain iron and zinc complements ongoing efforts to combat micronutrient malnutrition. Limited information available on the nature and magnitude of gene effects for grain iron and zinc. So generation mean analysis was done using four crosses, ICSB 52 × IS 13211, ICSB 52 × SPV 1359, IS 20843 × IS 2248 and IS 2248 × IS 20843. Six generations, P1, P2, F1, F2, B1 and B2, were generated for each of these crosses which were evaluated during the postrainy season 2012–13. The mean sum of squares due to generations were significant for days to flowering, plant height, grain yield/plant, 100-grain weight, and grain Fe and Zn. Generation mean studies revealed the presence of both additive and dominant gene interactions in inheritance of agronomic traits. Duplicative epistasis was observed for days to flowering, plant height, grain yield/plant, 100-grain weight, and grain Zn with a predominance of dominant gene action in inheritance of these traits. Panicle length, panicle width, and grain Fe showed both additive and dominance gene effects, with higher magnitude of dominance. This information can be utilized in developing sorghum lines with high grain Fe and Zn.

Item Type:	Article
Divisions:	Research Program : Asia
CRP:	CGIAR Research Program on Grain Legumes and Dryland Cereals (GLDC)
Uncontrolled Keywords:	Sorghum, Biofortification, Gene action, Additive, Dominance, Grain Fe and Zn concentration, Inheritance studies, grain iron, zinc, agronomic traits
Subjects:	Others > Plant Breeding Others > Biofortification Mandate crops > Sorghum Others > Genetics and Genomics
Depositing User:	Mr Ramesh K
Date Deposited:	20 Sep 2018 05:01
Last Modified:	20 Sep 2018 05:22
URI:	http://oar.icrisat.org/id/eprint/10866
Official URL:	http://dx.doi.org/10.1016/j.jcs.2018.09.007
Projects:	UNSPECIFIED
Funders:	HarvestPlus CGIAR Challenge Program, University Grants Commission (UGC) - Rajiv Gandhi National Fellowship, Government of India
Acknowledgement:	The authors wish to thank the sorghum breeding staff for their help in conducting field trials in this work which was supported by the HarvestPlus CGIAR Challenge Program Grant No 5321. First author Anil Gaddameedi is grateful to the University Grants Commission (UGC) - Rajiv Gandhi National Fellowship, Government of India, for the fellowship provided during the course of this work.
Links:	Google Scholar

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