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Effect of Water Stress on Chlorophyll, Yield and Yield Attributes of Rice Genotypes

Dr. Md. Tariqul Islam
Principal Scientific Officer and Head,
Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, BAU Campus, Mymensingh-2202, Bangladesh

Md. Siddiqure Rahman
Senior Scientific Officer
Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, BAU Campus, Mymensingh-2202, Bangladesh

Mahbuba Khatoon
Senior Scientific Officer
Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, BAU Campus, Mymensingh-2202, Bangladesh

Md. Babul Akter
Scientific Officer
Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, BAU Campus, Mymensingh-2202, Bangladesh

Md. Azadul Haque
Scientific Officer
Crop Physiology Division, Bangladesh Institute of Nuclear Agriculture, BAU Campus, Mymensingh-2202, Bangladesh

Abstract/ Executive Summary:

A pot experiment was carried out to assess the effects of water stress on chlorophyll content, yield and yield attributes. Control (100% FC) and three water stresses such as 40%, 60% and 80% FC were imposed at booting stage and continued until final harvest on six rice mutant/varieties viz., Binadhan-17, N₄/350/P-4(5), BRRIdhan56, N₁₀/350/P-5-4, N₄/280/P-1(2) and N₄/280/P-2(6)-26. The experiment was laid out in a Complete Randomized Design with three replications. Thirty day old seedlings were transplanted in plastic pots containing 8 kg soils pot^-1 on July 2016. Recommended doses of fertilizers were applied and cultural practices were done whenever required. Data on chlorophyll content was taken by SPAD meter from 50, 55, 60, 65 and 69 days after transplanting. Data on yield and yield attributes were also recorded at maturity. Chlorophyll content was found highest in 100% FC, decreased significantly with the increase water stress at all growth stages. Binadhan-17 showed higher chlorophyll content followed by N₄/280/P-2(6)-26 and N₄/280/P-1(2). The highest grain yield hill^-1 was observed in N₄/280/P-1(2) due to higher number of effective tiller, grains paniclc^-1 and 1000-grain weight. The mutant N₄/280/P-1(2) showed better performance regarding yield and yield attributes against water stress up to 40% FC.

Keywords: Rice, Water stress, Chlorophyll, Yield attributes, Yield

Location: BINA, Mymensingh

Start Date: 01-07-2016

End Date: 31-12-2016

Program Area: Crop-Soil-Water Management

Commodity: Rice

Objectives:

To assess the effects of water stress on chlorophyll content, yield and yield attributes of rice genotypes and to find out stress tolerant genotype

Methodology:

A pot experiment was conducted with six rice genotypes at BINA, Mymensingh during July to December 2016. Control (100% FC) and three water stresses such as 40%, 60% and 80% FC were imposed at booting stage and continued until final harvest on rice genotypes viz., Binadhan-17, N₄/350/P-4(5), BRRI dhan56, N₁₀/350/P-5-4, N₄/280/P-1(2) and N₄/280/P-2(6)-26. The experiment was laid out in a Complete Randomized Design with three replications. Thirty day old seedlings were transplanted in plastic pots containing 8 kg soils pot^-1 on July 2016. Recommended doses of fertilizers were applied and cultural practices were done whenever required. Data on chlorophyll content was taken by SPAD meter from 50, 55, 60, 65 and 69 days after transplanting. Data on yield and yield attributes were also recorded at maturity. Collected data were analyzed statistically.

Source of Information: BINA Annual Report, 2016-17: 64-65.

Article Link (Online Journal):

Funding Source:

1.

Budget:

Total Budget (Tk.) :

Achievement/Findings:

The mutant N₄/280/P-1(2) showed better performance regarding yield and yield attributes against water stress at 40% FC.

Knowledge Management: Report/Proceedings