摘要
在对苏椒5号和苏长红进行低温处理的基础上,研究了低温解除后辣椒叶片中内源激素的动态变化。结果表明,低温促进了辣椒叶片中ABA的合成,且苏椒5号大于苏长红,低温解除5 d后,ABA含量恢复至对照水平,这可能是植株自身对低温的一种应激反应,低温解除,ABA代谢恢复;低温抑制了GA3和IAA的合成,其中,苏长红受抑制程度较苏椒5号明显,随着低温条件的解除,IAA含量在25 d后逐渐恢复到对照水平,苏椒5号的GA3含量于25 d恢复正常,而苏长红的GA3含量因低温伤害始终低于对照;苏椒5号的ABA/GA3在低温解除25 d后恢复至对照水平,苏长红无法恢复;低温解除后25 d,2个辣椒品种的ABA/IAA达到对照水平,之后,苏椒5号的ABA/IAA低于对照,而苏长红则高于对照,可见2个辣椒品种有不同的低温适应能力。
The dynamic change of endogenesis hormone in leaves after chilling stress was analyzed with two pepper varieties （S J-5 and SCH）. The results showed that chilling stress promoted the production of ABA in S J-5 more than in SCH. After five days under control temperature, the content of ABA recovered to the control level, which indicated that the change of ABA content was an emergency response to chilling stress, that is, the ABA metabolism would come back once the chilling stress stopped. Chilling stress reduced the anabolism of GA3 and IAA in leaves of peppers, and it was more obviously for SCH than S J-5. The content of IAA would reach to the control after the stress was relieved for 25 days, and so was for GA3 in SJ-5. However, comparison with control, the content of GA3 in SCH was keeping a low-level because of the stress injury. ABA/GA3 would resume after the stress was stopped for 25 days for SJ-5, but would not for SCH. For 25 days under normal temperature, ABA/IAA could reach the control level for the two varieties, after then, it was lower for S J-5 and higher for SCH than control, which indicated that the two varieties have a different chilling-adaptability.
出处
《安徽农业大学学报》
CAS
CSCD
北大核心
2013年第5期867-870,共4页
Journal of Anhui Agricultural University
基金
淮安市农业科技支撑计划项目(SN1033)资助
关键词
辣椒
低温
内源激素
Capsicum annum L.
chilling stress
endogenesis.horm0ne
