STUDY ON SOME ECOPHYSIOLOGICAL DIFFERENCE IN MORE AND LESS COMPETITIVE WINTER WHEAT CULTIVARS ON COMPETITION WITH WILD OAT AT DIFFERENT WHEAT DENSITIES

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ARMIN M.; NOORMOHAMMADI H.; DARVISH F.; ZAND S.; BAGHESTANI M.A.

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Journal: Year:2008 | Volume:21 | Issue:3 (80 IN AGRONOMY AND HORTICULTURE) Page(s): 119-127

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Title

STUDY ON SOME ECOPHYSIOLOGICAL DIFFERENCE IN MORE AND LESS COMPETITIVE WINTER WHEAT CULTIVARS ON COMPETITION WITH WILD OAT AT DIFFERENT WHEAT DENSITIES

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Keywords

COMPETITION ABILITYQ2

YIELD LOSSQ2

PLANT DENSITYQ3

LEAF AREA INDEXQ2

LIGHTQ3

Abstract

Field experiment was conducted in 2004-2005 growing season, at the Research Station of Plant, Pest and Disease Institute of Karaj to study on some ecophysiological difference in more and less competitive winter wheat cultivars on competition with wild oat at different wheat densities. The experiment was established as a factorial combination of wheat varieties (Rooshan (as less competitive) and Niknejad (as more competitive)) 3 wheat densities (recommended, recommended + 25% and recommended + 50%) and 4 wild oat densities (0, 25, 50, and 75 plants m-2) with 4 replications. Quantitative estimate of these traits was obtained for each experimental unit using nonlinear regression analysis. The result showed that more competitive cultivar had more LEAF AREA INDEX (LAI), more LIGHT absorption, reach sooner to 50% maximum leaf are index or height and higher proportion of its leaf area in higher canopy layer. Increasing wheat density increased these traits so increasing COMPETITION ABILITY and decreased YIELD LOSS.

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APA: Copy

ARMIN, M., NOORMOHAMMADI, H., DARVISH, F., ZAND, S., & BAGHESTANI, M.A.. (2008). STUDY ON SOME ECOPHYSIOLOGICAL DIFFERENCE IN MORE AND LESS COMPETITIVE WINTER WHEAT CULTIVARS ON COMPETITION WITH WILD OAT AT DIFFERENT WHEAT DENSITIES. PAJOUHESH-VA-SAZANDEGI, 21(3 (80 IN AGRONOMY AND HORTICULTURE)), 119-127. SID. https://sid.ir/paper/19174/en

Vancouver: Copy

ARMIN M., NOORMOHAMMADI H., DARVISH F., ZAND S., BAGHESTANI M.A.. STUDY ON SOME ECOPHYSIOLOGICAL DIFFERENCE IN MORE AND LESS COMPETITIVE WINTER WHEAT CULTIVARS ON COMPETITION WITH WILD OAT AT DIFFERENT WHEAT DENSITIES. PAJOUHESH-VA-SAZANDEGI[Internet]. 2008;21(3 (80 IN AGRONOMY AND HORTICULTURE)):119-127. Available from: https://sid.ir/paper/19174/en

IEEE: Copy

M. ARMIN, H. NOORMOHAMMADI, F. DARVISH, S. ZAND, and M.A. BAGHESTANI, “STUDY ON SOME ECOPHYSIOLOGICAL DIFFERENCE IN MORE AND LESS COMPETITIVE WINTER WHEAT CULTIVARS ON COMPETITION WITH WILD OAT AT DIFFERENT WHEAT DENSITIES,” PAJOUHESH-VA-SAZANDEGI, vol. 21, no. 3 (80 IN AGRONOMY AND HORTICULTURE), pp. 119–127, 2008, [Online]. Available: https://sid.ir/paper/19174/en

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