Exogenously Used 24-Epibrassinolide Promotes Drought Tolerance in Maize Hybrids by Improving Plant and Water Productivity in an Arid Environment.
Exogenously Used 24-Epibrassinolide Promotes Drought Tolerance in Maize Hybrids by Improving Plant and Water Productivity in an Arid Environment.
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DOI：
10.3390/plants10020354
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发表时间：
2021-02-12
期刊：
影响因子：
--
通讯作者：
Ali EF
中科院分区：
文献类型：
--
作者：
Desoky EM;Mansour E;Ali MMA;Yasin MAT;Abdul-Hamid MIE;Rady MM;Ali EF
在半干旱条件下，田间评价了5 μM浓度24-表油菜素内酯（EBR24）对6个玉米杂交种植株生理生化的影响及其对作物水分生产力（CWP）等农艺性状的反映。采用两种灌溉缺水水平（中度和重度干旱，分别为6000和3000 m3水公顷- 1）与对照（水井灌溉，9000 m3水公顷- 1）。IWD降低了相对含水量、膜稳定性指数、光合效率、气孔导度、蒸腾速率和净光合速率。相反，与对照相比，丙二醛含量和电解质泄漏的增加显著增加了抗氧化酶活性和渗透物含量。这些负面影响导致CWP和籽粒产量相关性状的降低。而EBR24能解毒IWD应力效应，提高上述各项参数。评价杂交种的耐旱性存在差异；吉萨-168在中度干旱条件下表现最好，Fine-276在重度干旱条件下表现最好。在IWD条件下，某些生理性状与产量和产量贡献性状或CWP呈高度正相关。因此，在半干旱条件下，外源利用EBR24可以有效地提高植物和水分生产力。
The influence of 24-epibrassinolide (EBR24), applied to leaves at a concentration of 5 μM, on plant physio-biochemistry and its reflection on crop water productivity (CWP) and other agronomic traits of six maize hybrids was field-evaluated under semi-arid conditions. Two levels of irrigation water deficiency (IWD) (moderate and severe droughts; 6000 and 3000 m3 water ha−1, respectively) were applied versus a control (well-watering; 9000 m3 water ha−1). IWD reduced the relative water content, membrane stability index, photosynthetic efficiency, stomatal conductance, and rates of transpiration and net photosynthesis. Conversely, antioxidant enzyme activities and osmolyte contents were significantly increased as a result of the increased malondialdehyde content and electrolyte leakage compared to the control. These negative influences of IWD led to a reduction in CWP and grain yield-related traits. However, EBR24 detoxified the IWD stress effects and enhanced all the above-mentioned parameters. The evaluated hybrids varied in drought tolerance; Giza-168 was the best under moderate drought, while Fine-276 was the best under severe drought. Under IWD, certain physiological traits exhibited a highly positive association with yield and yield-contributing traits or CWP. Thus, exogenously using EBR24 for these hybrids could be an effective approach to improve plant and water productivity under reduced available water in semi-arid environments.
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影响因子：
6.7
作者：
Abd El-Mageed, Taia A.;Semida, Wael M.;Rady, Mostafa M.
通讯作者：
Rady, Mostafa M.
影响因子：
1.8
作者：
Behnamnia, Mehri;Kalantari, Khosrow Manouchehri;Ziaie, Jalal
通讯作者：
Ziaie, Jalal
DOI：
10.1016/0006-3002(60)91350-0
发表时间：
1960-01-01
期刊：
BIOCHIMICA ET BIOPHYSICA ACTA
影响因子：
--
作者：
AVRON, M
通讯作者：
AVRON, M
影响因子：
4.3
作者：
Chen, Zhifei;Wang, Zhi;Xu, Bingcheng
通讯作者：
Xu, Bingcheng
影响因子：
4.3
作者：
Eraslan, F.;Inal, A.;Gunes, A.
通讯作者：
Gunes, A.