Vol. 8, Issue 4 (2020)
Biochemical performance of some Sub1 rice (Oryza sativa) genotypes under submergence stress in Odisha
Author(s): Soumya Mishra and Manoranjan Kar
Abstract: Recurring floods in Asia cause poor crop establishment. Yields decline drastically when plants are completely submerged for a few days. Traditional rice genotypes predominate because they have acquired moderate tolerance to flooding but they carry the penalty of inherently lower grain yields. Genotypes with tolerance to complete submergence were recently developed in the background of popular genotypes by transferring the submergence tolerance gene SUBMERGENCE1 (Sub1) from the highly tolerant Indian landrace FR13A. The present study evaluated thirteen pairs of Sub1 near-isogenic lines (NILs) together with FR13A and other check genotypes in pot culture conditions to assess the survival and growth processes occurring during submergence and recovery that are associated with Sub1. The present experiment was conducted in Department of Plant physiology, OUAT, Bhubaneswar during kharif 2017 and kharif 2019 to screen out the NILs rice genotypes for submergence adaptation traits under coastal regions of Odisha. The present study indicated that among the twenty genotypes, IR-85086-Sub 33-3-2-1(4.87 t ha-1), IR-88760-Sub 93-3-3 (4.7 t ha-1) and Swarna Sub -1 (4.57 t ha-1) contributed highest yield under submergence.
Pages: 1709-1716 | 3701 Views Downloads
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How to cite this article:
Soumya Mishra, Manoranjan Kar. Biochemical performance of some Sub1 rice (Oryza sativa) genotypes under submergence stress in Odisha. Int J Chem Stud 2020;8(4):1709-1716.
