Identification of Rice Hybrids for Aerobic Condition Based on Yield and Yield Associated Traits
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Author:K. Amudha and K. Thiyagarajan
p-ISSN:0024-9602, e-ISSN:2582-5321, Vol:99, Issue:oct-dec
DOI: https://doi.org/10.29321/MAJ.10.100180
Abstract
An experiment was conducted to identify rice hybrids for aerobic condition based on yield
and yield associated traits. None of the hybrids showed desirable performance for all the
traits studied. Water deficit under aerobic condition decreased the pollen fertility and
increased spikelet sterility under aerobic conditions. However, five hybrids viz., IR 68885A /
IR 73718-3-1-3-3, IR 67684A / CT-6510-24-1-2, IR 70372A / PSBRC 80, IR 70372A / IR 73718-3-1-3-3 and
IR 70369A / IR 73718-3-1-3-3 maintained high pollen /spikelet fertility and recorded higher yield
under aerobic conditions. Expression of desirable genes for pollen/spikelet fertility under
stress is a desirable trait and these genotypes can be better utilized under aerobic conditions.
Key words : Rice hybrids, Aerobic condition, Pollen fertility, Spikelet fertility.