EFFECT OF NITROGEN ON GRAIN YIELD OF BREAD AND DURUM WHEAT GENOTYPES UNDER TERMINAL HEAT STRESS CONDITIONS

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MODHEJ ADEL

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Journal: JOURNAL OF PLANT PRODUCTION SCIENCE (JOURNAL OF AGRICULTURAL RESEARCHES) Year:2010 | Volume:2 | Issue:3 Page(s): 53-67

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Title

EFFECT OF NITROGEN ON GRAIN YIELD OF BREAD AND DURUM WHEAT GENOTYPES UNDER TERMINAL HEAT STRESS CONDITIONS

Author(s)

MODHEJ ADEL | Issue Writer Certificate

Keywords

WHEATQ3

NITROGENQ2

POST-ANTHESIS HEAT STRESS AND GRAIN YIELDQ3

Abstract

In order to study the effects of NITROGEN levels on grain yield and yield components of WHEAT genotypes under optimum and post-anthesis heat stress conditions, two separate field experiments were conducted in delayed and optimum sowing dates in Ahvaz, Iran in 2007 and 2008. The experimental site had a moderate winter and dry, hot summer. Plants with delayed sowing date experienced heat stress post-anthesis. Each split-polt experiment had a randomized complete block design with three replicates. The N application rates were (50, 100, and 150 KgNha-1) assigned in the main-plots. Sub-plots consisted of six bread and durum WHEAT genotypes. Results indicated that, Compared with optimum conditions, heat stress after anthesis reduced grain per m-square, grain yield, grain weight, and HI, 12.4%, 24%, 31% and 10%, respectively. GY reduction under post-anthesis heat stress conditions was due to significant grain weight reduction. The highest and the lowest stress susceptibility index for grain yield was in Stare and D-83-8 genotypes, respectively. Genotypes that headed late such as Star and D-84-5, in general, had higher TGW and GY reduction than cultivars that headed earlier under post-anthesis heat stress conditions.

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APA: Copy

MODHEJ, ADEL. (2010). EFFECT OF NITROGEN ON GRAIN YIELD OF BREAD AND DURUM WHEAT GENOTYPES UNDER TERMINAL HEAT STRESS CONDITIONS. JOURNAL OF PLANT PRODUCTION SCIENCE (JOURNAL OF AGRICULTURAL RESEARCHES), 2(3), 53-67. SID. https://sid.ir/paper/201881/en

Vancouver: Copy

MODHEJ ADEL. EFFECT OF NITROGEN ON GRAIN YIELD OF BREAD AND DURUM WHEAT GENOTYPES UNDER TERMINAL HEAT STRESS CONDITIONS. JOURNAL OF PLANT PRODUCTION SCIENCE (JOURNAL OF AGRICULTURAL RESEARCHES)[Internet]. 2010;2(3):53-67. Available from: https://sid.ir/paper/201881/en

IEEE: Copy

ADEL MODHEJ, “EFFECT OF NITROGEN ON GRAIN YIELD OF BREAD AND DURUM WHEAT GENOTYPES UNDER TERMINAL HEAT STRESS CONDITIONS,” JOURNAL OF PLANT PRODUCTION SCIENCE (JOURNAL OF AGRICULTURAL RESEARCHES), vol. 2, no. 3, pp. 53–67, 2010, [Online]. Available: https://sid.ir/paper/201881/en

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