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外源脱落酸 (ABA)能提高无芒雀麦、葡萄、冬小麦和黄瓜等的耐热性 ,使内源ABA含量增加 ,因此 ,ABA可能是高温锻炼和诱导产生的耐热性的因素之一。水杨酸 (SA)在一定程度上可仿效热锻炼 ,外源施用SA和热锻炼均可提高芥末幼苗耐热性 ,同时使体内H2 O2 含量发生变化。水杨酸或热锻炼提高的耐热性的效应可能是通过处理早期H2 O2 含量的增加这一信号转导途径而介导的。细胞分裂素 (CTK)对耐热性的影响有不同的实验结果。植株乙烯 (Eth)释放效率与耐热性间有负相关关系。通过实验有可能得到能提高冷地型草坪草耐热性的外源施用激素或生长调节剂 ,使冷地型草坪草能够适应我国气候过渡区 7月初的骤然高温及其后的持续高温
Abscisic acid (ABA) can increase the heat resistance of Bromus inermis, grape, winter wheat and cucumber, and increase the content of endogenous ABA. Therefore, ABA may be one of the factors of high temperature exercise and induced heat resistance . Salicylic acid (SA) can imitate hot exercise to a certain extent. Both exogenous application of SA and hot exercise can increase the heat resistance of mustard seedlings and change the content of H2O2 in the body. The effect of increased salicylic acid or heat exercise on heat tolerance may be mediated through the treatment of the signal transduction pathway that increases the early H2O2 content. The effects of cytokinin (CTK) on heat resistance have different experimental results. There is a negative correlation between ethylene release efficiency and heat resistance. Through experiments, it is possible to obtain exogenous hormones or growth regulators which can improve the heat tolerance of the cold-type turfgrass, so that the cold-type turfgrass can adapt to the sudden high temperatures in early July in the climate transitional region of China and the subsequent sustained high temperature