1-Methylcyclopropene Effects on Field-Grown Cotton: Physiological Characteristics

IF 0.7 Q4 AGRICULTURAL ENGINEERING Journal of cotton science Pub Date : 2018-01-01 DOI:10.56454/zoip9502
M. Maeda, J. T. Cothren, J. Heilman, C. Fernández, G. Morgan, V. Costa, M. Maeda
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Abstract

Cotton (Gossypium hirsutum L.) is the lead cash crop in Texas, and its productivity is often challenged by stressful environmental conditions such as high temperatures and sub-optimal water supply. The objective of this investigation was to assess the impact of 1-methylcyclopropene (1-MCP) applications triggered by canopy temperature and forecasted ambient temperatures on field-grown cotton plants. Physiological responses to 1-MCP applications were investigated in field studies conducted during the summers of 2012-2014 at the Texas A&M University Field Laboratory in Burleson County, TX. During all three growing seasons, more than 65% of the days reached temperatures above 28 °C, which indicated great potential for high temperature stress. Daily plant canopy temperature, net photosynthesis, transpiration, and photosystem II quantum yield were affected by 1-MCP treatment when plants were irrigated, but not under dryland conditions. Positive effects of 1-MCP were found for fruit retention in 2013 and 2014, for both irrigated and dryland studies, although a negative impact was found in the 2012 irrigated study. Applications of 1-MCP affected physiological characteristics; however, it did not affect crop yield.
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1-甲基环丙烯对大田棉花生理特性的影响
棉花(Gossypium hirsutum L.)是德克萨斯州的主要经济作物,其生产力经常受到高温和次优供水等压力环境条件的挑战。本研究的目的是评估冠层温度和预测环境温度引发的1-甲基环丙烯(1-MCP)施用对大田棉花植株的影响。2012年至2014年夏季,在德克萨斯州伯勒森县的德克萨斯A&M大学野外实验室进行了对1-MCP施用的生理反应的实地研究。在所有三个生长季节,超过65%的天数达到28°C以上,这表明高温胁迫的潜力很大。灌水条件下,1-MCP处理对植物日冠层温度、净光合作用、蒸腾作用和光系统II量子产量有显著影响,旱地条件下无显著影响。在2013年和2014年的灌溉和旱地研究中都发现了1-MCP对水果保有量的积极影响,尽管在2012年的灌溉研究中发现了负面影响。1-MCP对生理特性的影响然而,它并没有影响农作物产量。
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来源期刊
Journal of cotton science
Journal of cotton science AGRICULTURAL ENGINEERING-
CiteScore
0.90
自引率
20.00%
发文量
0
期刊介绍: The multidisciplinary, refereed journal contains articles that improve our understanding of cotton science. Publications may be compilations of original research, syntheses, reviews, or notes on original research or new techniques or equipment.
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