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Optimizing Sowing Methods Through Estimates of Interactions between Sowing Date and Genotypes in Some Morpho-Physiological Traits in Rice (Oryza sativa L) | Abstract
ISSN: 2375-4338

Rice Research: Open Access
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Research Article

Optimizing Sowing Methods Through Estimates of Interactions between Sowing Date and Genotypes in Some Morpho-Physiological Traits in Rice (Oryza sativa L)

Fatema-Tuj-Johora1*, Jalal Uddin Ahmed2, Morshed M3, Mian MAK4 and Ariful Islam M5
1Department of Crop Botany, EXIM Bank Agricultural University, Bangladesh
2Dept of Crop Botany, BSMRAU, Gazipur1706, Bangladesh
3Senior Scientist, IRRI, Philippines
4Department of Genetics and Plant Breeding, BSMRAU, Gazipur1706, Bangladesh
5Department of GPB, EXIM Bank Agricultural University, Bangladesh
Corresponding Author : Fatema-Tuj-Johora
Lecturer, Department of Crop Botany
EXIM Bank Agricultural University, Bangladesh
Tel: +88-01833414348
E-mail: [email protected]
Received May 05, 2015; Accepted August 26, 2015; Published September 01, 2015
Citation: Johora FT, Ahmed JU, Morshed M, MAK M, Islam MA (2015) Optimizing Sowing Methods Through Estimates of Interactions between Sowing Date and Genotypes in Some Morpho-Physiological Traits in Rice (Oryza sativa L). J Rice Res 3:146. doi:10.4172/2375-4338.1000146
Copyright: © 2015 Johora FT, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

For optimizing some morpho-physiological traits in two different sowing methods of boro rice genotypes at varying seeding time, a field experiment was carried out by IRRI at the research farm of Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur; Bangladesh during 2010-12. A decreasing trend of plant height was observed at sowing dates after 8th December and the decreasing trend continued until January 07. The smaller plant in delayed seeding indicate the sensitivity of late seeding low temperature on the dry matter production of the genotype, unlike other genotypes which expressed no significant reduction in plant height due to late seeding. Significant responses of environments were found either in between the varieties but in between the sowing dates. Maximum number of effective tillers was observed in both direct seeded and transplanted condition in December 18. The tiller number increased with delayed seeding until December 18. But tillers numbers were found to decline afterwards. PSBRC82 took maximum days to flowering sowing at December 08th in transplanting condition but first flowering in direct seeding condition which is statistically different. And the earliest flowering was observed in BRRI dhan28 sowing at January 07. In direct seeding condition than in transplanting.OM2718 gave the maximum sterility when it was practiced in transplanting method than the direct seeded method at January 07. The increase of filled grains reflects clearly that the number of filled grains exhibited higher in direct seeded methods than transplanting method in all genotypes interaction with sowing date of December18th. Such difference in number of filled grains might be due to undisturbed root establishment in direct seeding method than transplanted Method. PSBRC82 sowing at December 18 resulted the highest grain yield in direct seeding methods followed by in BRRI dhan28 in transplanting.

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