1Marker Assisted Selection Laboratory Department of Genetics and Plant Breeding, University of Agricultural Sciences, GKVK, Bangalore-560 065
2Plant Breeding Department, International Rice Research Institute, Los Banos, Laguna, Philippines, Philippne-4030
* Email:shailajahmaslab@rediffmail.com
Online published on 12 April, 2012.
A field experiment was conducted during wet season 2009 to study the response of rice genotypes under aerobic conditions. Variance studies revealed significant differences among the genotypes for the traits, days to flowering, plant height, harvest index, grain yield, panicle number, straw yield, panicle length, test weight and biomass. Higher values of heritability and genetic advance were observed for plant height and days to flowering. Grain yield per plot showed positive association with harvest index and total biomass. Correlation and path analysis revealed an ideal plant type of genotype under aerobic conditions should have high harvest index and biomass. Eight rice genotypes with increased yield advantage over checks have been identified as suitable entries for aerobic cultivation. Results also suggested that all rice genotypes are not suitable for aerobic method of cultivation and the genotypes which are able to acclimatize to the non-puddled aerobic conditions should be identified and released.
Aerobic rice, fresh water, grain yield, correlation, path analysis
