Zinc Uptake and Accumulation in Recombinant Inbreed Lines of Rice (Oryza Sativa L.) under Varied Zinc Levels
Journal Title: International Journal of Agricultural Science and Research (IJASR) - Year 2017, Vol 7, Issue 3
Abstract
In the present study, the effect of different levels of zinc on growth and zinc uptake was analysed in contrasting zinc accumulating recombinant inbreed lines (RILs) developed in our laboratory and other genotypes. Plants were grown in zinc deficient soil (<0.65 ppm zinc) and the soil was supplemented with zinc fertilizer @ 10 kg/ha, 20 kg/ha and 40kg/ha. Phenotypic pattern and micronutrient accumulation such as zinc in different RILs and genotypes were analyzed, which grew under zinc deficient and supplemented conditions. The results revealed that the RILs performed well compared to genotypes under zinc deficient condition. The characteristic symptom of the genotypes under Zn-deficient conditions was found to be severe yellowing/bronzing of leaves. Further, scoring of panicle emergence index showed well exerted panicle in high zinc RILs, and delayed panicle emergence was observed in zinc deficiency susceptible genotype under both Zn deficient and supplemented conditions. No significant reduction in plant height was observed among RILs and genotypes. Increased grain yield and grain Zn accumulation was observed in RILs under zinc supplementation at 20 kg/h. These results indicate that RILs developed for high zinc accumulation were able to efficiently accumulate Zn, which was also correlated with high grain yield under Zn supplemented conditions as compared to other genotypes.
Authors and Affiliations
Hemavathi . . , Brijesh A. S, Shashidhar H. E, Vijayakumar Swamy H. V
Keywords
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