Exploring Genetic Variability for Grain Iron Content in Rice (Oryza sativa L.)

Author: Das S., Lenka D., Tripathy S.K, Swain D.1, Dash M. and Bagchi T.B.

Download PDF

Abstract

An investigation of 72 rice genotypes for grain iron and yield was carried out during Kharif 2022-23. Based on the preliminary screening, twenty four genotypes were selected and raised in Randomized Block Design with two replications. Grain yield per plant exhibited positive correlation with tillers per plant, panicle length, 100-grain weight and grain breadth. While, grain weight exhibited positive significant correlation with grains per panicle indicating scope for increasing grain yield through such correlated response. In contrast, Fe content exhibited strong negative correlation with tiller number and grain yield per plant, While grain Zn (ppm) content is negatively associated with almost all major yield contributing traits indicating feeble scope for biofortification in rice without sacrificing grain yield. Some of high yielding varieties Kalingadhan 1202, Hasanta and Govinda were rich in grain iron content with maximum in Kalingadhan 1202 (76.10 ppm). Such genotypes had also shown high yield potential along with acceptable grain quality and may serve as potential donors in Fe biofortification programme

Keywords

Rice, coefficient of variation, genetic variability and correlation

Conclusion

Selection becomes ineffective unless the presence of wide genetic variability of the trait of interest is ensured. Therefore, identification of donors for grain Fe content in rice is a prerequisite for biofortification breeding. Hence selection of semi-dwarf plant types with high tillering ability and compact panicles containing long slender grains may be rewarding for Fe biofortification breeding. In the present context Kalingadhan 1202, Hasanta and Govinda were rich in grain iron content and may serve as potential iron donor in breeding programme

References

-

How to cite this article

Das S., Lenka D., Tripathy S.K., Swain D., Dash M. and Bagchi T.B. (2023). Exploring Genetic Variability for Grain Iron Content in Rice (Oryza sativa L.). Biological Forum – An International Journal, 15(9): 1089-1095.