6-苄基腺嘌呤和脱落酸对烟草光合功能衰退的影响  

Effects of 6-benzyladenine and abscisic acid on the photosynthetic function decline in tobacco

作　　者：江力[1] 孔小卫[2] 张荣铣[1] 

机构地区：[1]南京农业大学生命科学学院 [2]安徽大学生命科学学院,安徽合肥230039

出　　处：《南京农业大学学报》2006年第4期127-130,共4页Journal of Nanjing Agricultural University

基　　金：国家重点基础研究专项经费资助项目(G1998010100)

摘　　要：研究了6-苄基腺嘌呤(6-BA)和脱落酸(ABA)对2个不同基因型烟草品种(Nicotiana tabacumL.‘NC89’&‘JYH’)叶片光合功能衰退的影响。结果表明,6-BA处理显著提高两品种烟草叶片的瞬时光合速率(IAPS)、叶绿素含量、叶绿体全电子传递活性和核酮糖-1,5-二磷酸羧化酶(RuBPCase)活性,延长光合功能期,提高烟草叶片光合电子传递和碳同化的衰退比,延缓光合功能衰退;ABA处理,结果相反。品种JYH对这2种激素的反应较NC89敏感。Effects of 6-benzyladenine （6-BA） and abscisic acid （ABA） on photosynthetic function decline in two genotypes tohacco （Nicotiana tabacum L. ＇NC89＇ ＆ ＇JYH＇） leaves were studied. The instantaneous apparent photosynthetic rate （IAPS）, chlorophyll content, the activities of whole electron transport chain of chloroplast and ribulose-1, 5-bisphosphate carboxylase （RuBPCase） of leaves were increased with 6-BA treatment. 6-BA treatment extended the active photosynthesis duration, increased the decline ratio of electron transport and carbon assimilation, and also delayed photosynthetic function decline of leaves. The results were reversed in leaves with ABA treatment. JYH was more sensitive than NC89 under 6-BA and ABA treatments.

关 键 词：6-苄基腺嘌呤 脱落酸 烟草 光合功能衰退 

分 类 号：Q945[生物学—植物学]