文献类型：期刊文章

作　　者：黄红英[1,2] 窦新永[1] 邓斌[2] 吴国江[3] 彭长连[1]

机构地区：[1]华南师范大学生命科学院广东省植物发育生物工程重点实验室,广州510631 [2]湘南学院化学与生命科学系,郴州423000 [3]中国科学院华南植物园,广州510650

出　　处：《林业科学》

基　　金：国家自然科学基金项目(30870385);中国科学院知识创新工程方向性项目(KSCX2-YW-G-027)

年　　份：2009

卷　　号：45

期　　号：7

起止页码：150-155

语　　种：中文

收录情况：AJ、BDHX、BDHX2008、CAB、CAS、CSA、CSA-PROQEUST、CSCD、CSCD2011_2012、IC、JST、ZGKJHX、ZR、核心刊

摘　　要：The response of two secondary provenances of Jatropha curcas originated respectively from Hainan Province and Guizhou Province to heat stress treatments was investigated.The capacity of scavenging organic free radical of DPPH· in both secondary provenances firstly increased and then decreased with increasing temperature,and presented one peak pattern.The peak value was at 30 ℃ in Guizhou secondary provenance and at 35 ℃ in Hainan secondary provenance,respectively.Antioxidative ability in Hainan secondary provenance was significantly higher than that in Guizhou secondary provenance under high temperature treatment(>35 ℃).The maximal photosynthetic evolution of oxygen was at 40 ℃ in Hainan secondary provenance,whereas 35 ℃ in Guizhou secondary provenance.There was little change in the maximal primary photochemical quantum efficiency(F_v/F_m)of the PSⅡ,however the non-circle PSⅡquantum efficiency(Φ_PSⅡ)and the photochemical quenching(q_P)of Hainan were obvious higher than those of Guizhou secondary provenance.The nonphotochemical quenching(NPQ)of Hainan displayed more tolerance to high temperature than that of Guizhou secondary provenance.F_o-temperature curves showed that the inflexion temperature(T_i)of Hainan and Guizhou secondary provenance was 52 ℃ and 50 ℃ respectively.The experiment results indicated that Hainan secondary provenance of J.curcas was able to maintain relative higher function of photosynthetic apparatus because of its high antioxidative ability and more stability of membrane under high temperature condition.This would be one of possible reasons that Hainan secondary provenance displayed stronger resistance to high temperature than Guizhou secondary provenance.

关 键 词：高温胁迫 麻疯树 次生种源 光合特性

分 类 号：S718.43[林学类]