通过对温室环境下培育6 a的云南箭竹与野外生长的云南箭竹的生理指标进行对比试验。结果表明:温室内高温环境条件下云南箭竹嫩叶、成熟叶、衰老叶的叶绿素a(Chl a)与叶绿素b(Chl b)含量均比野外条件下的高,但Chl a/b的比值却低于野外环境; 温室内云南箭竹竹叶中嫩叶、成熟叶的类胡萝卜素含量均高于野外云南箭竹竹叶中嫩叶、成熟叶的,但衰老叶中的类胡萝卜素含量情况却相反; 温室内成熟叶片及衰老叶片的可溶性糖含量比野外条件的高,除幼嫩叶片外,温室内成熟及衰老叶片超氧化物歧化酶的活性均比野外条件的低,而温室条件下成熟叶片过氧化氢酶活性比野外叶片的高; 除衰老叶片之外,温室内嫩叶与成熟叶中的丙二醛含量均比野外叶片的高。可见云南箭竹作为高山竹种尽管在温室中生长较长的时间,但依旧不能完全适应高温环境。
Abstract
The contrast test on physiological index was conducted between the bamboos of Fargesia yunnanensis from wild environment and the same bamboos cultured in greenhouse for 6 years. The results showed that the chlorophyll a and chlorophyll b contents in young leaves, mature leaves and old leaves in high temperature were higher than bamboos in wild environment, but the chlorophyll a/b ratio was lower. The content of carotenoid in young leaves and mature leaves in greenhouse was higher than bamboos in wild environment except for the old leaves. The contents of soluble sugar in young and mature leaves in greenhouse were higher than bamboos in wild environment, but the SOD activity in mature and old leaves was lower than bamboos in wild environment, except for the young leaves. However, the CAT activity in mature leaves in greenhouse was lower. The MDA contents in both young and mature leaves were higher than bamboos in wild environments except for the old leaves. It could be concluded that F. yunnanesnis still couldn’t completely adapt to the environment of high temperature although it had been planted in greenhouse for long time.
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参考文献
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基金
收稿日期:2013-07-30 修回日期:2014-03-15
基金项目:“十一五”国家科技支撑计划(2012BAD23B05); 西南林业大学校级科研项目(110956,110914); 国家自然科学基金项目(31100453)
第一作者:王曙光,博士,副教授。*通信作者:丁雨龙,教授。E-mail:ylding@vip.163.com。
引文格式:王曙光,林树燕,丁雨龙. 云南箭竹叶片对长期高温环境的适应性生理变化[J]. 南京林业大学学报:自然科学版,2014,38(4):87-90.
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