National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
Zinc deficiency which leads to “Khaira” disease is the major micronutrient problem in rice. It can be corrected by applying zinc supplements to the soil or plant which will put burden on resource poor farmers. Present investigation was taken to map QTLs for zinc deficiency tolerance to zinc deficiency in rice which may helpful to develop zinc deficiency tolerant cultivars. Phenotypic data generated under rainfed zinc deficiency field condition using 271 recombinant inbred lines(RILs) derived from cross between two indica genotypes, Danteshwari and Dagad Deshi during wet season 2011 concluded that zinc deficiency tolerance as a polygenic trait. Bulk segregant analysis (BSA) and co-segregation analysis methods were used to generate genotypic data followed by single marker analysis with chi-square test along with Yates correction for molecular mapping of QTLs related to zinc deficiency tolerance. Three QTLS linked with HvSSR 01- 80, HvSSR 01-87 and RM 499 markers identified on chromosome 1, two QTLs linked with RM 135 and RM 232 markers located on chromosome 3, one QTL linked with marker HvSSR 05-31 present on chromosome 5, two QTLs linked with RM 242 and RM 296 on chromosome 9 and one QTL linked with marker RM 26334 located on chromosome 11 are contributing zinc deficiency tolerance based on the genotypic data.
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