摘要
对不同生态型瓠瓜的耐低温弱光特性研究表明,低温弱光下设施早熟栽培型瓠瓜的种子发芽率、幼苗生长速率、PSⅡ最大光化学量子产量(Fv/Fm)和净光合速率(Pn)显著高于露地栽培型。而质膜透性、丙二醛(MDA)含量和冷害指数则显著低于露地栽培型。低温弱光处理后不同类型瓠瓜的抗氧化酶(SOD,POD,CAT)活性均显著升高,且设施栽培型瓠瓜上升幅度显著高于露地栽培型。
The effects of chilling and low light intensity on the seedling growth and physiological and biochemical characteristics of different ecotype gourd（ Lagenaria siceraria （Molina） Standl. （Syn. L. leucantha Rushy）） were studied, Results indicated that under chilling and low light intensity, the seed germination rate, seedling growth rate, Pn（ net photosynthetic rate） and Fv/Fm（maximum quantum yield of PS Ⅱ ） of greenhouse-type cultivar were significantly higher than openfield- type cultivars. Chilling injury index, plasmalenmut permeability and MDA（thiobarbituric acid reacitivesubstances） content of greenhouse-type cultivar were lower than the latter. Under chilling and low light intensity, activities of antioxidant enzyme in gourd leaves inCreased significantly compared with the control. And the increased extent of the antioxidant enzyme activities of greenhouse-type cultivar was higher than openheld-type cultivars under chilling and low light intensity.
出处
《浙江农业学报》
CSCD
2006年第6期421-424,共4页
Acta Agriculturae Zhejiangensis
基金
浙江省科技厅项目(2004C30055)
关键词
低温弱光
瓠瓜
抗氧化酶
光合作用
叶绿素荧光
chilling and low light intensity
gould
antioxidant enzyme
photosynthesis
chlorophyll fluorescence
