Author:
Anusha G.,Rao D. Sanjeeva,Jaldhani V.,Beulah P.,Neeraja C. N.,Gireesh C.,Anantha M. S.,Suneetha K.,Santhosha R.,Prasad A. S. Hari,Sundaram R. M.,Madhav M. Sheshu,Fiyaz A.,Brajendra P.,Tuti M. D.,Bhave M. H. V.,Krishna K. V. Radha,Ali J.,Subrahmanyam D.,Senguttuvel P.
Abstract
AbstractGenetic improvement of rice for grain micronutrients, viz., iron (Fe) and zinc (Zn) content is one of the important breeding objectives, in addition to yield improvement under the irrigated and aerobic ecosystems. In view of developing genetic resources for aerobic conditions, line (L) × tester (T) analysis was conducted with four restorers, four CMS lines and 16 hybrids. Both hybrids and parental lines were evaluated in irrigated and aerobic field conditions for grain yield, grain Fe and Zn content. General Combining Ability (GCA) effects of parents and Specific Combining Ability (SCA) effects of hybrids were observed to be contrasting for the micronutrient content in both the growing environments. The grain Fe and Zn content for parental lines were negatively correlated with grain yield in both the contrasting growing conditions. However, hybrids exhibited positive correlation for grain Fe and Zn with grain yield under limited water conditions. The magnitude of SCA mean squares was much higher than GCA mean squares implying preponderance of dominance gene action and also role of complementary non-allelic gene(s) interaction of parents and suitability of hybrids to the aerobic system. The testers HHZ12-SAL8-Y1-SAL1 (T1) and HHZ17-Y16-Y3-Y2 (T2) were identified as good combiners for grain Zn content under irrigated and aerobic conditions respectively.
Funder
Indian Council of Agricultural Research
Publisher
Springer Science and Business Media LLC
Reference61 articles.
1. White, P. J. & Broadley, M. R. Biofortification of crops with seven mineral elements often lacking in human diets–iron, zinc, copper, calcium, magnesium, selenium and iodine. New Phytol. 182(1), 49-84 (2009).
2. Chakravarty, I. & Ghosh, K. Micronutrient malnutrition–present status and future remedies. J. Indian Med. Assoc. 98, 539–542 (2000).
3. Kuldeep, S. The critical zinc deficiency levels in Indian soils and cereal crops. in The Proceedings of the 16th International Plant Nutrition Colloquium, 26–30 Aug 2009 (Sacramento, California, USA, 2009).
4. Muthayya, S., Sugimoto, J. D., Montgomery, S. & Maberly, G. F. An overview of global rice production, supply, trade, and consumption. Ann. N. Y. Acad. Sci. 1324, 7–14 (2014).
5. Virmani, S. S. & Kumar, I. Development and use of hybrid rice technology to increase rice productivity in the tropics. Irrn 29, 10–20 (2004).
Cited by
15 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献