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Vol. 6, Issue 9 (2017)

Characterization of rice (Oryza sativa L.) genotypes for various Morpho-physiological and biochemical traits under moisture stress in Jammu

Author(s):
Parmeet Kaur and Tuhina Dey
Abstract:
In rice, a major cereal, water stress is one of the major constraints for production and yield stability in rainfed ecosystems. In an effort to identify promising rice accessions having tolerance against water stress, fifteen rice genotypes were examined at the vegetative stage under both field and laboratory conditions during Kharif season at the Research Farm, Division of Plant Breeding and Genetics, FOA, SKUAST-Jammu, Main Campus-Chatha. A wide range of phenotypic variability was observed under moisture stress condition for most of the traits. It was high for plant height, days to 50% flowering, relative water content at 30 days after transplanting and relative water content at 60 days after transplanting. The traits, total sugars, grain yield, root length, relative water content at 60 days after transplanting showed high genotypic coefficients of variation as compared to others under moisture stress condition. Root length at 35 days after transplanting, total sugars, number of effective tillers, grain yield, plant height, days to 50% flowering, relative water content at 30 days after transplanting, relative water content at 60 days after transplanting, showed high heritability coupled with moderate to high genetic advance, indicating that these traits can be considered during selection for drought tolerance. Grain yield per plant was significant and positively correlated with days to 50% flowering and leaf area index at 60 days after transplanting. Further, it was also significant and negatively correlated with root length at 35 days after transplanting, leaf area index at 30 days after transplanting, total sugars and proline content under moisture stress condition.
Pages: 13-16  |  369 Views  24 Downloads
How to cite this article:
Parmeet Kaur and Tuhina Dey. Characterization of rice (Oryza sativa L.) genotypes for various Morpho-physiological and biochemical traits under moisture stress in Jammu. 2017; 6(9): 13-16.
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