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首页> 外文期刊>Journal of Agronomy and Crop Science/Zeitschrift fur acker-und pflanzenbau >Exogenous Application of Putrescine Ameliorates the Effect of High Temperature in Gossypium hirsutum L. Flowers and Fruit Development
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Exogenous Application of Putrescine Ameliorates the Effect of High Temperature in Gossypium hirsutum L. Flowers and Fruit Development

机译：Putrescine的外源性应用改善了高温术中Hirsutum L.鲜花和水果开发的影响

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摘要

Polyamines have been shown to stimulate fruit set and the initial phase of fruit development in several crops. The effect of exogenous application of putrescine on ovary development and seed set of cotton under high temperature stress was investigated under controlled environmental conditions. Putrescine was applied to floral buds of cotton, 24 h prior to anthesis, and caused a significant increase in putrescine content of cotton ovaries collected at anthesis compared with the control treatment. However, there was no increase in spermidine and spermine. High temperature (38 degrees C) significantly decreased the spermidine content of cotton ovaries in both years of the study compared with the untreated control (30 degrees C). Spermine was significantly decreased in the high temperature treatment the first year of the study; however, this result was not consistent for the second year. Ovarian putrescine concentration was not affected by the high temperature treatment. Increased temperatures in this study decreased seed set in cotton flowers; however, exogenous application of putrescine ameliorated the negative effect of high temperature on seed set, as expressed by the number of seeds per cotton boll. This was evident in both years of the study. Exogenous application of Putrescine increased the level of putrescine in cotton flowers, which was associated with increased seed set despite the negative effect of increased temperature.
机译：已经显示多胺刺激果实套装和几种作物中果发育的初始阶段。在受控环境条件下，研究了在高温胁迫下，在高温胁迫下对普雷斯克氏菌对卵巢发育和种子套的影响。 Putrescine应用于花香棉花，24小时，在花序前24小时，与对照处理相比，在开花中收集的棉卵巢普雷氏菌含量显着增加。然而，亚精亚胺和精子没有增加。与未处理的对照（30℃）相比，高温（38摄氏度）显着降低了棉卵巢的棉花卵形含量。在研究的高温处理中，精子显着下降;但是，这一结果在第二年不一致。卵巢瘟菌浓度不受高温处理的影响。这项研究中的温度升高，棉花花中的种子落下;然而，Putrescine的外源性应用改善了高温对种子套装的负面影响，如每棉铃的种子数量所表达。这两年的研究都很明显。外源性普雷氏菌素的应用增加了棉花胶水水平，尽管温度增加的效果，但随着种子套装的增加。

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