甘肃农业科技Issue(5)：12-15,16,5.DOI:10.3969/j.issn.1001-1463.2015.05.005
芍药蕾期叶片SPAD值与净光合速率的变化
Changes of SPAD Value and Net Photosynthetic Rate of Herbaceous Peony Leaves at the Buds Period
摘要
Abstract
Two cultivars of Paeonia lactiflora Dafugui and Hongyanzhenghui are used as experimental materials, test leaf area, SPAD value, net photosynthetic rate (Pn) values in different leaves position of Herbaceous peony at the buds period, The result shows that Leaf area enlarged with the development of flower bud and reached the maximum on the 30 th day of squaring period, which is 3 times as those in the initial stage of squaring period . Leaf area ranked in the decreasing order is basal leaves, middle leaves, top leaves, the initial stage, but the middle leaves became the highest at the terminal stage . SPAD value of leaves increasd greatly within the initial 10 days, and increasd a little after that . The SPAD value of Dafugui leaves in different leaf position is higher than that of Hongyanzhenghui . In the initial stage of squaring period, the higher position of the leaves, the lower the SPAD value . With the development of the leaves, Pn value of leaves in different position rose all straightly, and about 3 times in 30 d as in the initial stage . The Pn value in Dafugui is always higher than that in Hongyanzhenghui . Pn values and SPAD values show significant linear positive correlation in different leaves position .关键词
芍药/蕾期/叶位/净光合速率/SPADKey words
Paeonia lactiflora/The buds period/Leaf position/Net photosynthetic rate/SPAD分类
农业科技引用本文复制引用
孔芬,刘小勇,陶俊..芍药蕾期叶片SPAD值与净光合速率的变化[J].甘肃农业科技,2015,(5):12-15,16,5.基金项目
甘肃省农业科学院科技创新项目（2012GAAS11-2）；甘肃省科技重大专项 （）
