EFFECT OF PHYSIOLOGICAL SINKS REDUCTION ON TWO GROWTH COMPONENTS OF WHEAT KERNELS AT AHWAZ CLIMATE

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ROSHANFEKR H.; NABIPOUR M.; MORADI F.; MESGARBASHEE M.

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Journal: AGRICULTURAL RESEARCH Year:2008 | Volume:7 | Issue:4 (A) Page(s): 45-56

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Title

EFFECT OF PHYSIOLOGICAL SINKS REDUCTION ON TWO GROWTH COMPONENTS OF WHEAT KERNELS AT AHWAZ CLIMATE

Author(s)

ROSHANFEKR H. | NABIPOUR M. | MORADI F. | MESGARBASHEE M. | Issue Writer Certificate

Keywords

WHEATQ3

PLANTING DATEQ3

SINK- SOURCE RELATIONSHQ3

Abstract

Weight and growth of grain are affected by two components of dry matter accumulation and grain filling period. This research was conducted to investigate the behavior of these components under the influence of environmental and physiological changes (e.g, change in sink per ear) at Ahwaz climate condition. A spilt factorial design was set up based on randomized complete block with four replications. Three PLANTING DATEs (6 November, 26 November and 16 Desamber) were main plots and randomized compound cultivar (stare, chamran and fong) and sink size (intact spikelets as control and removal of one side of ear in main stem) were subplots. Due to high temperatures during grain filling period, late planting has a negative consequence on WHEAT productivity in this region. Delay at sowing might cause to limit sources which may reflects yield limitation. Harvested single grain weight for first, second and third PLANTING DATEs were 47.12, 44.97 and 40.39 mg respectively. On the other hand when comparing varieties, it reveals that fong cultivar despite a short grainfilling period and high source limitation obtain the most grain growth rate with single grain weight of 45.36 mg as compared with two other cultivar. But Chamran cultivar with a short period of reproductive phase and slow grain growth rate developed the lowest weight of single grain. Reduction of physiological sinks and increasing photo assimilates increasing did not affect grain filling period, but the manipulation of sink caused on increase in the growth of single grain weight, number of grain per spikelet and grain filling rate with 15.02, 11.24 and 16.15 percent respectively, compared to control. The present study showed that partial detachment of spikelets may cause a enhancement in the accumulation of soluble carbohydrates in remaining part of plant head when compared to control.

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APA: Copy

ROSHANFEKR, H., NABIPOUR, M., MORADI, F., & MESGARBASHEE, M.. (2008). EFFECT OF PHYSIOLOGICAL SINKS REDUCTION ON TWO GROWTH COMPONENTS OF WHEAT KERNELS AT AHWAZ CLIMATE. AGRICULTURAL RESEARCH, 7(4 (A)), 45-56. SID. https://sid.ir/paper/84676/en

Vancouver: Copy

ROSHANFEKR H., NABIPOUR M., MORADI F., MESGARBASHEE M.. EFFECT OF PHYSIOLOGICAL SINKS REDUCTION ON TWO GROWTH COMPONENTS OF WHEAT KERNELS AT AHWAZ CLIMATE. AGRICULTURAL RESEARCH[Internet]. 2008;7(4 (A)):45-56. Available from: https://sid.ir/paper/84676/en

IEEE: Copy

H. ROSHANFEKR, M. NABIPOUR, F. MORADI, and M. MESGARBASHEE, “EFFECT OF PHYSIOLOGICAL SINKS REDUCTION ON TWO GROWTH COMPONENTS OF WHEAT KERNELS AT AHWAZ CLIMATE,” AGRICULTURAL RESEARCH, vol. 7, no. 4 (A), pp. 45–56, 2008, [Online]. Available: https://sid.ir/paper/84676/en

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