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首页> 外文期刊>Cogent Food & Agriculture >Growth, photosynthesis, and antioxidant responses of Vigna unguiculata L. treated with hydrogen peroxide
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Growth, photosynthesis, and antioxidant responses of Vigna unguiculata L. treated with hydrogen peroxide

机译：过氧化氢处理的Vi豆（Vigna unguiculata L.）的生长，光合作用和抗氧化反应

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摘要

Cowpea (Vigna unguiculata L.) is an important legume well grown in semiarid and arid environment. Hydrogen peroxide solutions (0.1, 0.5, 1.0, and 1.5?mM) have been used to optimize growth and photosynthetic performance of cowpea plant at two growth stages [30 and 45 DAS (days of sowing)]. Foliar application of H_(2)O_(2) at 0.5??1.0?mM solution at 29 DAS optimally promoted the photosynthetic attributes [leaf chlorophyll content, net photosynthetic rate (P _(N )), water use efficiency, and maximum quantum yield of PSII (Fv/Fm )] and growth performance [root and shoot length; fresh and dry weight] of plants where the responses were more significant at the later growth stage. It was favored by activity of enzymes as carbonic anhydrase [CA; E.C. 4.2.1.1] and nitrate reductase [NR, E.C. 1.6.6.1] and those of antioxidant enzymes viz. peroxidase [POX; EC 1.11.1.7], catalase [CAT; EC 1.11.1.6], and superoxide dismutase [SOD; EC 1.15.1.1] and leaf proline content. Strengthened root system and antioxidant activity, particularly leaf proline level appeared to be the key factor for efficient photosynthesis and growth responses.
机译：pea豆（Vigna unguiculata L.）是在半干旱和干旱环境下生长良好的重要豆类。过氧化氢溶液（0.1、0.5、1.0和1.5？mM）已用于优化cow豆植物在两个生长阶段[30和45 DAS（播种天数）]的生长和光合性能。在29 DAS的0.5？>？1.0？mM溶液中叶面喷施H_（2）O_（2）可以最佳地促进光合特性[叶绿素含量，净光合速率（ P _（ N））水分利用效率，以及PSII的最大量子产率（Fv / Fm）]和生长性能[根和茎长; [干重]。酶的活性受碳酸酐酶[CA; E.C. 4.2.1.1]和硝酸盐还原酶[NR，E.C. 1.6.6.1]以及抗氧化酶。过氧化物酶[POX; EC 1.11.1.7]，过氧化氢酶[CAT; EC 1.11.1.6]和超氧化物歧化酶[SOD; EC 1.15.1.1]和叶片脯氨酸含量。增强的根系和抗氧化活性，尤其是叶片脯氨酸水平似乎是有效光合作用和生长反应的关键因素。

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