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dc.contributorDwivedi, Sangamen_US
dc.contributorSingh, Subeen_US
dc.contributorSahrawat, Kanwar Lalen_US
dc.contributorSingh, Shailesh Kumaren_US
dc.creatorUpadhyaya, Hari D.en_US
dc.identifier.citationHari D. Upadhyaya, Sangam Dwivedi, Sube Singh, Kanwar Lal Sahrawat, Shailesh Kumar Singh. (23/11/2015). Genetic Variation and Postflowering Drought Effects on Seed Iron and Zinc in ICRISAT Sorghum Mini Core Collection. Crop Science, 56 (1), pp. 374-383.en_US
dc.description.abstractDrought stress invariably reduces yield and may alter seed chemistry. This experiment was initiated to characterize the sorghum [Sorghum bicolor (L.) Moench] mini core collection for genetic variation and to study the effect of postflowering drought on seed Fe and Zn concentrations. Accessions with similar maturity, together with controls, were evaluated in split-plot design under irrigated and drought-stressed environments for two postrainy seasons. Residual (or restricted) maximum likelihood (REML) analysis of data considering genotypes as random and drought and year as fixed indicated highly significant variance as a result of genotypes. Highly significant effects of drought (D), year (Y), and D × Y interaction emphasized need for multilocation evaluation of germplasm for agronomic and seed nutritional traits. About twofold variation in Fe (25.8–48.9 mg kg−1 seed) and threefold variation in Zn (13.5–42.6 mg kg−1 seed) concentrations was observed across environments. Eleven accessions with high seed Fe, 14 accessions with high Zn, and nine accessions high in both Fe and Zn were identified. These accessions, however, produced low seed yields. In addition, six and four accessions, respectively, showed 8 to 39% and 9 to 38% greater Fe and Zn over control IS 33844 and produced seed yields similar to that of IS 33844. Significant rank correlation (≥0.70) indicated that accessions with high Fe or Zn under irrigated environments are also expected to perform well under drought-stressed environments. Significantly positive correlation between Fe and Zn indicated simultaneous improvement as a realistic approach in breeding. The identified germplasm are ideal genetic resources for the development of Fe- and Zn-dense sorghum cultivars.en_US
dc.publisherCrop Science Society of Americaen_US
dc.sourceCrop Science;56,(2015) Pagination 374,383en_US
dc.subjectpost floweringen_US
dc.titleGenetic Variation and Postflowering Drought Effects on Seed Iron and Zinc in ICRISAT Sorghum Mini Core Collectionen_US
dc.typeJournal Articleen_US
cg.subject.agrovocgenetic variationen_US
cg.contributor.centerInternational Crops Research Institute for the Semi-Arid Tropics - ICRISATen_US
cg.contributor.centerKansas State University - KSUen_US
cg.contributor.centerThe University of Western Australia, Institute of Agriculture - UWA - IOAen_US
cg.contributor.crpCGIAR Research Program on Grain Legumes - GLen_US
cg.contributor.funderCGIAR System Organization - CGIARen_US
cg.coverage.regionSouthern Asiaen_US
dc.identifier.statusTimeless limited accessen_US

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