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Pakistan Journal of Biological Sciences

Year: 2001  |  Volume: 4  |  Issue: 6  |  Page No.: 651 - 653

Direct Seeded Rice (Dsr) Genotypes for Drought Prone Upland Area

M. A. Salam, M. R. Islam and M. M. Haque

Abstract

Fifty-six genotypes composed of BR, IR and rice-wheat back cross (RWBC) derivatives were evaluated at the DSR drought prone area of Chuadanga. Five genotypes viz. BR5543-5-1-2-4, BR5742-B-15-3-7-2, BR5943-B-10-1-1, BR6058-6-3-3 and IR56463-184-2-1-2 had drought recovering ability. In addition, these lines were grown 6-13 days earlier than the local variety with resistance to lodging. Although, Fulbadami (Local) had significantly longer root length potential than the above genotypes but BR21 showed significantly shorter root system than BR6058-6-3-3 and BR5543-5-1-2-4. Furthermore, BR6058-6-3-3 required significantly longer time for complete leaf rolling than Fulbadami and BR5543-5-1-2-4 was similar to the checks. Again, BR6058-6-3-3 and BR5543-5-1-2-4 showed significantly higher yields (4.0-4.1 t/ha) than Fulbadami (3.2 t/ha) and BR21 (3.1 t/ha). The yield contributing characters of these lines increased significantly over the checks. BR5543-5-1-2-4 and BR6058-6-3-3 therefore, were identified to be the promising genotypes for drought-prone DSR area.

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