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首页> 外文期刊>African Journal of Biotechnology >Differential responses of two rubber tree clones to chilling stress
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Differential responses of two rubber tree clones to chilling stress

机译：两个橡胶树无性系对低温胁迫的差异响应

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Chilling stress is one of the most important environmental factors that limit the growth, distribution and yield of rubber tree in China. The effects of chilling stress on the grated plants of two rubber trees clones, GT1 and Wenchang217, were studied by physiological methods in controlled light chamber in order to explore the physiological mechanism of cold tolerance in rubber tree. Our results show a significant change in the tested physiological parameters after chilling treatment between two rubber clones. In comparison with the case of rubber tree clone GT1, the level of malondialdehyde (MDA) increased while superoxide dismutase, especially peroxidase and catalase decreased significantly in the seedlings of rubber tree clone Wenchang217 in response to chilling stress. As the cold tolerance ability of rubber tree clone GT1 is stronger than that of rubber tree clone Wenchang217, activation of oxidative quenching enzyme system should be one of the important factors that determine the cold tolerance of rubber tree.
机译：低温胁迫是限制中国橡胶树生长，分布和单产的最重要的环境因素之一。为了研究橡胶树耐寒性的生理机理，采用生理学方法研究了冷胁迫对橡胶树两个克隆GT1和文昌217的磨碎植株的影响。我们的结果表明，在两个橡胶克隆之间进行冷处理后，测试的生理参数发生了显着变化。与橡胶树无性系GT1相比，橡胶树无性系文昌217的幼苗响应冷胁迫，丙二醛（MDA）含量增加，而超氧化物歧化酶，尤其是过氧化物酶和过氧化氢酶显着下降。由于橡胶树无性系GT1的耐寒性强于橡胶树无性系文昌217，因此氧化猝灭酶系统的活化应是决定橡胶树抗寒性的重要因素之一。

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