摘要
在温室条件下,研究喷施不同浓度6-苄氨基嘌呤(6-BA)对弱光条件下不同类型黄瓜气体交换参数和叶绿素荧光参数的影响。结果表明,华南型杂交组合‘07QP56’在10μmol/L 6-BA处理条件下,欧洲迷你型杂交组合‘07QP51’在2,5μmol/L6-BA处理时,可以较为明显地缓解由弱光导致的饱和光合速率(Asat)、气孔导度(Gs)和蒸腾速率(Tr)降低的现象。同时,10μmol/L 6-BA处理对缓解弱光下‘07QP56’的PSⅡ潜在活性(Fv/Fo)、原初光能转化效率(Fv/Fm)的降低也有一定的效果。‘07QP51’较‘07QP56’耐弱光,并且对高浓度6-BA处理也更为敏感。
The effects of different concentrations of 6-BA on gas exchange and chlorophyll fluorescence parameters in different cucumber types under low light stress in greenhouse were studied.The results showed that application of optimal concentrations of 6-BA could obviously alleviate the decrease of net photosynthetic rate,stomatal conductance and transpiration rate under low light stress,indicating 10 μmol·L-1 was suitable for cross combination of Huanan type 07QP56 and 2,5 μmol·L-1 was suitable for cross combination of European mini type 07QP56.Meanwhile,10 μmol·L-1 6-BA could also alleviate the decrease of Fv/Fo,Fv/Fm in 07QP56 under low light stress as well.It was also indicated that 07QP51 showed higher resistance to low light stress compared to 07QP56,and 07QP51 was more sensitive to the higher concentration of 6-BA.
出处
《浙江农业学报》
CSCD
北大核心
2010年第6期769-773,共5页
Acta Agriculturae Zhejiangensis
基金
农业公益性行业科研专项(nyhyzx07-007)
国家产业化项目(2009GB2C000115)
上海市科技兴农重点攻关项目(沪农科攻字2009第2-1号)
上海市设施园艺技术重点实验室开放基金项目(SS2009KF006)
关键词
6-BA
弱光
黄瓜
气体交换参数
叶绿素荧光参数
6-BA
low light stress
cucumber
gas exchange parameters
chlorophyll fluorescence
