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Articles by M.A.A. Bhuiya
Total Records ( 2 ) for M.A.A. Bhuiya
  M.R. Zaman , D.N.R. Paul , M.S. Kabir , M.A.A. Mahbub and M.A.A. Bhuiya
  Fifteen modern rice varieties were grown in Aman seasons of 2002 and 2003. On the basis of data on days to 50% flowering, 1000-grain weight, plant height, flag leaf area, yield, field grain per panicle, tiller number per hill and flag leaf angle in the lower portion, characters like days to 50% flowering and 1000-grain weight made the largest contribution to the total divergence. After excluding less contributory characters to the total divergence and Mahalanabis D2 values were calculated, then identified the most three distant and closest pairs. From the distance matrix tables of Mahalanabis D2 analysis, (BR10, BRRI dhan30) was found as the closest pair and (BR5, BRRI dhan33) was found most distant pair. It was estimated that among the Aman varieties, yield, tiller number per hill, filled grains per panicle were the less contributing characters towards the total divergence. Breeding for the improvement of those characters, therefore, have the little possibility. However, there is a scope to improve days to flowering using those varieties.
  M.Z. Alam , M.A.A. Bhuiya , M.A. Muttaleb and M.M. Rashid
  A pot experiment in glasshouse was conducted with a single salinity level of 10.5 dS m-1 to study the effect of alternating saline and non-saline conditions on emergence and seedling growth of two rice cultivars (IR8 and V3) differing in salt tolerance. A split-plot design was used with three replications. The results demonstrated that rice seedlings, 1 to 3 weeks after emergence, proved to be very salt-sensitive. There was about 80% reduction in stand establishment in 10.5 dS m-1 salt (about 115 mM ) imposed for just one week. Maintaining rice seeds in saline conditions from seeding resulted in 50-70% initial seedling emergence. However, most seedlings then died within 14 days and by 42 days, only 5% or less survived. Though substantial differences existed between cultivars during germination and emergence, cultivar differences during post-emergence growth were minimal. Little improvement in stand establishment and seedling growth was achieved by ameliorating an initial exposure to salt by transferring to water after 21-35 days. The results demonstrated a gradual decrease in seedling mortality with later exposure to salt. There was little effect on stand establishment and other plant growth parameters when saline solution was introduced 35 days from seeding. Tolerance to a given salt concentration during germination and emergence of rice was not accompanied by the plants tolerance to that particular salt concentration at later stages of growth.
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