PERFORMANCE OF HYBRID AND INBRED RICE GENOTYPES AT TWO DIFFERENT LOCATIONS OF BANGLADESH DURING DRY SEASON
Bangladesh is an extremely land scarce country. Any improvement of rice yield has significant impact on the overall food security of the country. Hybrid rice is one of the viable and proven technologies that have been considered as a new frontier to increase rice production. Performance of two new exotic hybrid rice genotypes from India BIO-404 and BIO-452 including two popular BRAC hybrid (Alloran and Sathi) and one inbred (BRRI dhan28) were evaluated at BRAC Agricultural Research and Development Centre of Gazipur and also in the farmer’s field of Rajshahi district during dry season (boro) of 2011. Both the exotic BIO genotypes showed a better cold tolerance at the seedling stage. The initial growth of BIO-404 and BIO-452 were better compared to other tested genotypes. But at the later stage they showed a higher plant height and lower panicle number resulting in lower grain yield than the check hybrids. The spikelet fertility of the two exotic hybrid rice genotypes was also low. Hybrid Alloran produced the highest grain yield in both the locations which was attributed to higher spikelet fertility and higher individual grain weight.
- Author(s): M. S. Islam, M. M. Rashid, M. A. Kabir, M. R. Karim, and J. Timsina Download