Maternal effect on grain iron and zinc densities in pearl millet

Kanatti, A and Govindaraj, M and Rai, K N and Rao, A S (2018) Maternal effect on grain iron and zinc densities in pearl millet. In: 1st National Genetics Congress on Genetics for Sustainable Food, Health and Nutrition Security, December 14-16, 2018, ICAR- lndian Agricultural Research Institute, New Delhi, India.

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Genetic variation and inheritance of micronutrients in pearl millet has largely been studies in recent years as part of biofortification initiatives. Both iron (Fe) and zinc (Zn) densities are highly heritable and determined by additive genetic variances. In this context, genetics of maternal (cytoplasmic) effect on inheritance of grain Fe and Zn was studied using a set of diverse breeding material, consisting of inbreds, hybrids and OPVs. Entries were paired for low and high for Fe density to produce direct and reciprocal crosses. Parents and their crosses were evaluated for two contrast seasons (summer and rainy). Over two seasons, highly significant variation exhibited by parents and hybrids. Fe density among parents varied from 31 to 64 mg kg–1 and Zn density varied from 28 to 43 mg kg–1. The differences of direct and reciprocal hybrids for both micronutrients were non-significant indicate that genetics of both the micronutrients controlled by nuclear determinants and cytoplasmic or maternal gene cannot modify inheritance of these traits. Difference between each direct and reciprocal crosses for both Fe (1 to 4 mg kg–1) and Zn (0 to 2 mg kg–1) were negligible. These results indicate the high Fe/Zn inbreds can be used either female or male parent in seed and restorer parent breeding program. In addition, the highly significant and high positive association between Fe and Zn, suggesting, both could be enhanced simultaneously.

Item Type: Conference or Workshop Item (Paper)
Divisions: Research Program : Asia
Uncontrolled Keywords: Genetic variation, Pearl Millet
Subjects: Mandate crops > Millets > Pearl Millet
Others > Genetics and Genomics
Depositing User: Mr Arun S
Date Deposited: 04 Sep 2019 08:56
Last Modified: 04 Sep 2019 09:30
Acknowledgement: UNSPECIFIED
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