Studies on Cucumber Identification Index of Low Light Tolerance and Correlation#br#
Analysis between Its Seedling and Adult Plants
WANG Hai-tao 1,QIN Zhi-wei 1* ,LI Dan-dan 2,ZHOU Xiu-yan 1,XIN Ming 1
1 College of Horticulture,Northeast Agricultural University,Harbin 150030,Heilongjiang,China;2 College of
Agronomy,Heilongjiang Bayi Agricultural University,Daqing 163319,Heilongjiang,China
Taking 4 different cucumber varieties as material,this study tested chlorophyll content changes
in cucumber leaves under different low light treatments,explored the most appropriate light intensity and best
appraisal period for low light tolerance identification during cucumber seedling stage,and at the same time,
the low light tolerance identification was conducted. Beside,this paper analyzed the reduction rate of leaves
chlorophyll content during cucumber seedling stage,and the reduction rate of fruit yield in adult stage,and
also the reduction ratio of plant dry weight. The paper explored the correlation between cucumber tolerance to
low light in seedling stage and adult plant stage. The results showed that the reduction rate of leaves chlorophyll
content during seedling stage under 20 mol·m-2·s-1 light stress at 20 days could be used as indicator for rapid
identification of low light tolerance. The reduction rates of both fruit yield in adult stage and plant dry weight could
reflect the differences in low light tolerance between varieties during adult stage. There existed a significant positive
correlation between leaves chlorophyll content reduction rate in seedling stage and fruit yield reduction rate in adult
stage. Low light tolerance in seedling and adult stages of different varieties was the same. W25 had strong tolerance
to low light,and W5 had poor tolerance to low light.
王海涛,秦智伟,李丹丹,周秀艳,辛明. 黄瓜耐弱光性鉴定指标研究及其苗期与成株期的相关分析[J]. 中国蔬菜, 2016, 1(8): 35-39.
WANG Hai-tao,QIN Zhi-wei,LI Dan-dan,ZHOU Xiu-yan,XIN Ming. Studies on Cucumber Identification Index of Low Light Tolerance and Correlation#br#
Analysis between Its Seedling and Adult Plants. China Vegetables, 2016, 1(8): 35-39.