不同低温胁迫对两种沉香幼苗抗寒性的影响  

Effects of Different Low Temperature Stress on Cold Resistance of Two Kinds of Aquilaria Seedlings

作　　者：向振勇 楚永新 邵杨建 谷丽萍 郑科 

机构地区：[1]云南省林业和草原科学院/国家林业和草原局云南珍稀濒特森林植物保护和繁育重点实验室,云南省林业和草原科学院林业研究所,云南 昆明 [2]红河哈尼族彝族自治州林业和草原科学研究所,云南 蒙自 [3]云南农业大学园林园艺学院,云南 昆明 [4]云南省林业和草原科学院林业研究所,云南 昆明

出　　处：《植物学研究》2022年第1期89-96,共8页Botanical Research

摘　　要：以厚壳沉香(Aquilaria crassna)和白木香(Aquilaria sinensis)叶片作为处理材料,研究不同低温处理下两种沉香叶片中脯氨酸、可溶性蛋白质、可溶性糖以及丙二醛、电导率等指标变化,采用Fuzzy数学隶属函数对2种沉香进行抗寒性综合评价。结果表明:2种沉香的抗寒能力均随着温度下降而先升高后降低,对2种沉香的抗寒性综合评价得知白木香抗寒能力强于厚壳沉香。我们认为沉香在低于5℃的环境中,很难成活,尤其是温度低于2℃以后,持续1天以上,植株会大量死亡,在大规模繁殖中,低温冻害应是重点考虑因素。The leaves of Aquilaria crassna and Aquilaria sinensis were used as treatment materials to study the changes of proline, soluble protein, soluble sugar, malondialdehyde and electrical conductivity in two kinds of Aquilaria leaves under different low temperature treatment. The cold resistance of the two kinds of Aquilaria was evaluated comprehensively by fuzzy mathematical membership function. The results showed that the cold resistance of the two kinds of Aquilaria increased at first and then decreased with the decrease of temperature. The comprehensive evaluation of the cold resistance of the two kinds of Aquilaria showed that the cold resistance of Aquilaria sinensis was stronger than that of Aquilaria crassna. We believe that it is difficult for Aquilaria to survive in an environment below 5˚C, especially when the temperature is lower than 2˚C and lasts for more than one day, a large number of plants will die. Low temperature freezing injury should be a key factor in large-scale propagation.

关 键 词：沉香 抗寒性 综合评价 生理指标 

分 类 号：Q94[生物学—植物学]