alexa Abstract | Inter Specific Indica-japonica Drought Tolerant Rice Genotypes for Aerobic Condition
ISSN: 2375-4338

Rice Research: Open Access
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Research Article Open Access

Abstract

Rice is premier food crop of Asia and is cultivated in a variety of ecosystems. Twenty six medium duration Indica/Japonica, Recombinant Inbred Lines (RILs) of the cross IR50 × Moroberekan cross, their parents and popular rainfed aerobic rice varieties MAS 946-1, Rasi and Sahabhagi Dhan were evaluated under rain fed, drought and aerobic conditions with objective of identifying genotype for aerobic and stress situations. Observations were recorded for plant and yield traits. Field evaluation during wet season revealed significant differences among the means of genotypes except for panicle length, drought recovery score, relative grain yield and relative biomass yield under different stress levels during dry season of 2011. RILs IM036, IM095, IM090, IM014, IM167, IM039, IM192 and IM176 performed superior under aerobic condition in wet season while, IM192 and IM176 were superior under rain fed condition also. IM160, IM096, IM104, IM046 IM192, IM109, IM36, IM181, IM14, IM176, IM167 and IM95 were high yielding in aerobic condition in dry season 2011. IM 167 was superior for grain yield under both conditions except under moisture stress period of 60 to 70 Days after sowing (DAS). IM95 was superior for stress period of 100 to 115 DAS and aerobic condition, whereas IM176 for aerobic and stress period 60 to 70 DAS. IM181 was superior under all the conditions after 60 to 75 DAS. IM36 was superior under all the conditions except for stress period 100 to 110 DAS. Superior genotypes identified for both drought and aerobic situations will be recommended for water scarce situation in India.

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Author(s): J Aravind, Farhad Kahani and Shailaja Hittalmani

Keywords

Drought, Aerobic, Rain fed, Indica-Japonica, Rice, Drought Tolerance, Stress Resistant Rice , Rice Genotype

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