EVALUATION OF SINK LIMITATION AND ASSIMILATES DISTRIBUTION OF WHEAT GENOTYPESUNDER TERMINAL DROUGHT STRESS

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TALEBZADEH SEYED JAVAD; HADI HASHEM; AMIRNIA REZA; TAJBAKHSH SHISHAVAN MEHDI; REZAEI MORADALI MOHAMMAD

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Journal: JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE) Year:2017 | Volume:19 | Issue:3 Page(s): 717-732

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Title

EVALUATION OF SINK LIMITATION AND ASSIMILATES DISTRIBUTION OF WHEAT GENOTYPESUNDER TERMINAL DROUGHT STRESS

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Keywords

CORRELATIONQ2

FLAG LEAFQ2

GRAIN YIELDQ2

HARVEST INDEXQ2

REMOBILIZATIONQ1

WATER DEFICITQ2

Abstract

In order to evaluation the pattern of assimilates distribution to seed under late season drought stress, 11promising lines of winter wheat along with Orum, Zareh, Mihan, Zarrin and Pishgam cultivars wereevaluated in two levels of irrigation (full irrigation and cutting irrigation from flowering to maturity) atthe Agricultural Research Station of Miandoab during 2013-2015 growing seasons. Experiments wereconducted in split plot based on randomized complete block design with three replications. Resultsshowed that WATER DEFICIT stress significantly increased REMOBILIZATION rate, contribution of REMOBILIZATIONand source restriction and decreased the amount of spike weight, peduncle weight, sink restriction byremoving leaves other than FLAG LEAF, sink restrictions by removing FLAG LEAF, GRAIN YIELD and HARVEST INDEX, so that terminal WATER DEFICIT stress increased REMOBILIZATION by 45. 45% and the total yield contribution ofremobilization of 18. 30% in normal conditions increased to 43. 33% under stress conditions. Among thegenotypes, ‘ Zarrin’ and ‘ Mihan’ under normal moisture conditions and ‘ Mihan’ genotype under terminaldrought stress conditions produced the highest GRAIN YIELD. In this study under terminal drought stressconditions, there were significant positive CORRELATIONs between GRAIN YIELD with REMOBILIZATION rate andcontribution of REMOBILIZATION. It can be concluded that the varieties and genotypes afforded adequateremobilization and contribution of REMOBILIZATION in GRAIN YIELD in both conditions are appropriate forcultivation in optimal conditions, as well as areas that are faced with terminal WATER DEFICIT stress.

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APA: Copy

TALEBZADEH, SEYED JAVAD, HADI, HASHEM, AMIRNIA, REZA, TAJBAKHSH SHISHAVAN, MEHDI, & REZAEI MORADALI, MOHAMMAD. (2017). EVALUATION OF SINK LIMITATION AND ASSIMILATES DISTRIBUTION OF WHEAT GENOTYPESUNDER TERMINAL DROUGHT STRESS. JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE), 19(3 ), 717-732. SID. https://sid.ir/paper/209363/en

Vancouver: Copy

TALEBZADEH SEYED JAVAD, HADI HASHEM, AMIRNIA REZA, TAJBAKHSH SHISHAVAN MEHDI, REZAEI MORADALI MOHAMMAD. EVALUATION OF SINK LIMITATION AND ASSIMILATES DISTRIBUTION OF WHEAT GENOTYPESUNDER TERMINAL DROUGHT STRESS. JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE)[Internet]. 2017;19(3 ):717-732. Available from: https://sid.ir/paper/209363/en

IEEE: Copy

SEYED JAVAD TALEBZADEH, HASHEM HADI, REZA AMIRNIA, MEHDI TAJBAKHSH SHISHAVAN, and MOHAMMAD REZAEI MORADALI, “EVALUATION OF SINK LIMITATION AND ASSIMILATES DISTRIBUTION OF WHEAT GENOTYPESUNDER TERMINAL DROUGHT STRESS,” JOURNAL OF CROPS IMPROVEMENT (JOURNAL OF AGRICULTURE), vol. 19, no. 3 , pp. 717–732, 2017, [Online]. Available: https://sid.ir/paper/209363/en

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