Journal of Bioscience and Agriculture Research |
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Research article:
Effect of high temperature on some physiological parameters of grain growth and yield of boro rice varieties
P. Hazra (a), M. T. Islam (b) and G. C. Das (c)
aDept. of Environmental Science, Patuakhali Science & Technology University, Patuakhali
bPhysiology Division, Bangladesh Institute of Nuclear Agriculture, Bangladesh and
cDept. of Agronomy, Patuakhali Science & Technology University, Patuakhali, Bangladesh
J. bios. agric. res. | Volume 07, issue 01, pp. 600-607 | Available online: 26 February 2016
DOI: http://dx.doi.org/10.18801/jbar.070116.72
Effect of high temperature on some physiological parameters of grain growth and yield of boro rice varieties
P. Hazra (a), M. T. Islam (b) and G. C. Das (c)
aDept. of Environmental Science, Patuakhali Science & Technology University, Patuakhali
bPhysiology Division, Bangladesh Institute of Nuclear Agriculture, Bangladesh and
cDept. of Agronomy, Patuakhali Science & Technology University, Patuakhali, Bangladesh
J. bios. agric. res. | Volume 07, issue 01, pp. 600-607 | Available online: 26 February 2016
DOI: http://dx.doi.org/10.18801/jbar.070116.72
| effect_of_high_temperature_on_some_physiological_parameters_of_grain_growth_and_yield_of_boro_rice_varieties.pdf |
Title: Effect of high temperature on some physiological parameters of grain growth and yield of boro rice varieties
Abstract: A pot experiment was conducted with four varieties viz. Binadhan-5, Binadhan-6, Binadhan-8 and Iratom-24 in the plant growth chamber at Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh to assess the effects of high temperature at different growth stages on yield and yield attributes and photosynthetic rate, transpiration rate, leaf conductance and water use efficiency during grain growth period. For yield and yield attributes the following five treatments T0 (Ambient temperature), T1 (36°C at tillering stage), T2 (36°C at panicle initiation stage), T3 (36°C at booting stage), and T4 (36°C at flowering stage) were applied. Two temperature treatments T0 (Ambient temperature) and T1 (30oC) were also maintained during grain growth period. Temperature treatments significantly decreased number of total tillers and effective tillers per plant, filled and unfilled grains per panicle, 1000-grain weight, grain yield per plant and harvest index but plant height, non-effective tiller number and panicle length were not affected by temperature treatments. High temperature stress (36oC) at panicle initiation reduced grain yield more compared to other treatments. The grain dry weight, photosynthetic rate, leaf conductance, transpiration rate decreased but water use efficiency of flag leaf increased with temperature treatments. Binadhan-6 showed the highest grain dry matter accumulation under temperature treatments during grain growth period. Binadhan-6 seems to be tolerant to high temperature.
Key words: Temperature, Photosynthetic rate, Transpiration rate, Leaf conductance, Water use efficiency and Rice yield
Abstract: A pot experiment was conducted with four varieties viz. Binadhan-5, Binadhan-6, Binadhan-8 and Iratom-24 in the plant growth chamber at Bangladesh Institute of Nuclear Agriculture (BINA), Mymensingh to assess the effects of high temperature at different growth stages on yield and yield attributes and photosynthetic rate, transpiration rate, leaf conductance and water use efficiency during grain growth period. For yield and yield attributes the following five treatments T0 (Ambient temperature), T1 (36°C at tillering stage), T2 (36°C at panicle initiation stage), T3 (36°C at booting stage), and T4 (36°C at flowering stage) were applied. Two temperature treatments T0 (Ambient temperature) and T1 (30oC) were also maintained during grain growth period. Temperature treatments significantly decreased number of total tillers and effective tillers per plant, filled and unfilled grains per panicle, 1000-grain weight, grain yield per plant and harvest index but plant height, non-effective tiller number and panicle length were not affected by temperature treatments. High temperature stress (36oC) at panicle initiation reduced grain yield more compared to other treatments. The grain dry weight, photosynthetic rate, leaf conductance, transpiration rate decreased but water use efficiency of flag leaf increased with temperature treatments. Binadhan-6 showed the highest grain dry matter accumulation under temperature treatments during grain growth period. Binadhan-6 seems to be tolerant to high temperature.
Key words: Temperature, Photosynthetic rate, Transpiration rate, Leaf conductance, Water use efficiency and Rice yield
APA (American Psychological Association)
Hazra, P., Islam, M. T. & Das, G. C. (2016). Effect of high temperature on some physiological parameters of grain growth and yield of boro rice varieties. Journal of Bioscience and Agriculture Research, 07(01), 600-607.
MLA (Modern Language Association)
Hazra, P., Islam, M. T. & Das, G. C. “Effect of high temperature on some physiological parameters of grain growth and yield of boro rice varieties.” Journal of Bioscience and Agriculture Research, 07. 01 (2016): 600-607.
Chicago/Turabian
Hazra, P., Islam, M. T. & Das, G. C. “Effect of high temperature on some physiological parameters of grain growth and yield of boro rice varieties.” Journal of Bioscience and Agriculture Research, 07, no. 01 (2016): 600-607.
Hazra, P., Islam, M. T. & Das, G. C. (2016). Effect of high temperature on some physiological parameters of grain growth and yield of boro rice varieties. Journal of Bioscience and Agriculture Research, 07(01), 600-607.
MLA (Modern Language Association)
Hazra, P., Islam, M. T. & Das, G. C. “Effect of high temperature on some physiological parameters of grain growth and yield of boro rice varieties.” Journal of Bioscience and Agriculture Research, 07. 01 (2016): 600-607.
Chicago/Turabian
Hazra, P., Islam, M. T. & Das, G. C. “Effect of high temperature on some physiological parameters of grain growth and yield of boro rice varieties.” Journal of Bioscience and Agriculture Research, 07, no. 01 (2016): 600-607.
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