播期和灌溉方式对甜玉米产量、叶绿素含量、渗透酶和抗氧化酶的影响

IF 0.9 4区 农林科学 Q3 AGRONOMY Romanian Agricultural Research Pub Date : 2023-01-01 DOI:10.59665/rar4009
Amir Khashayar Mousavi, M. R. Dadashi, S. Kalat, S. Khorasani
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引用次数: 0

摘要

伊朗大部分地区发生干旱胁迫,水资源有限,有必要利用农业技术和适应措施,帮助作物生产者选择适当的种植日期和最佳利用灌溉水,以增加玉米产量。为了研究甜玉米(cv。为应对干旱胁迫和种植延迟,在伊朗呼罗珊省Razavi Khorasan省两个生长季节(2018年和2019年),采用随机完全区组设计进行了3个重复的分块试验。在3个水平(需水量100%、需水量80%(轻度胁迫)、需水量60%(重度胁迫))中以灌溉为主要因素,在3个水平(5月16日、5月26日和6月5日)中以种植日期为小块处理。结果表明:与对照(无胁迫和及时栽培)相比,延迟播种和低灌溉加重干旱胁迫使籽粒产量和叶片叶绿素含量分别降低62%和40%,甘氨酸、甜菜碱、脯氨酸、可溶性糖和抗氧化酶含量增加。因此,根据马什哈德地区的气候条件,在生长季节开始时,通过地表蒸发损失的水分要少得多,因此有必要选择合适的种植日期,不要采用低灌溉策略,以实现最大的粮食产量。
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The Effect of Planting Date and Irrigation Regimes on Yield and Chlorophyll Content, Osmolytes and Antioxidant Enzymes in Sweet Corn (Zea Mays L. var saccarata)
The occurrence of drought stress in most areas of Iran with limited water reserves, the need to use agricultural techniques and adaptation measures with the aim of helping crop producers to choose the appropriate planting date and optimal use of irrigation water to increase corn production is necessary. In order to investigate the yield, chlorophyll content, osmolytes and the activity of antioxidant enzymes in sweet corn (cv. Amylopop) in response to drought stress and delay in planting, an experiment was conducted as split plots based on a randomized complete block design with three replications during two growing seasons (2018 and 2019) at Razavi Khorasan Province, Iran. The treatments included the irrigation as the main factor in three levels [100% water requirement, 80% water requirement (mild stress), 60% water requirement (severe stress)] and planting date as a sub-plots in three levels (16 May, 26 May and 5 June). The findings showed that grain yield and leaf chlorophyll content decreased by 62% and 40% by delay in planting and increased drought stress caused by low irrigation regime, respectively, compared to the control (no stress and timely cultivation), and also, glycine betaine, proline, soluble sugars and antioxidant enzymes contents increased. Therefore, according to the climatic conditions of the Mashhad region, water loss through surface evaporation is much less at the beginning of the growing season, so it is necessary to choose the well-timed planting date and not to use a low irrigation strategy to achieve the maximum grain yield.
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来源期刊
Romanian Agricultural Research
Romanian Agricultural Research 农林科学-农艺学
CiteScore
0.90
自引率
28.60%
发文量
2
审稿时长
>12 weeks
期刊介绍: The Journal ROMANIAN AGRICULTURAL RESEARCH is an “open access” one, which publishes original articles, short communications, presenting new scientific results – theoretical, experimental and technical – on plant breeding and genetics, physiology, biotechnology, mineral nutrition and plant protection, in field crops. Reviews on up-to date subjects and recent research, preferably from Eastern Europe, may also be published.
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