湖南农业大学学报（自然科学版）2017，Vol.43Issue(5)：533-538,6.DOI:10.13331/j.cnki.jhau.2017.05.012
修剪对蜡梅光合作用和叶片解剖特征的影响
Effects of pruning on photosynthesis and leaf anatomical characteristics ofChimonanthus praecox
摘要
Abstract
TheChimonanthus praecox of six years old was used as material to study the effects of pruning on photosynthesis and leaf anatomical structure. The photosynthetic parameters were measured and anatomic characteristics was observed in vigorous growth period of the leaf. The results showed that the pruning significantly increased the average of diurnal variation of net photosynthetic rate (Pn), stomata conductance (Gs) , transpiration rate (Tr) ofChimonanthus praecox leaf , the apparent mesophyll conductance (ALMC), the chlorophyll a , total chlorophyll content , the ratio of chlorophyll a to chlorophyll b , width of stoma , the length of stoma, width of stomata aperture, stomata density , the thickness of leaf , palisade tissue , the thickness rate of palisade and sponge tissue , however, significantly decreased the intercellular CO2concentrations(Ci). Correlation analysis showed that the net photosynthetic rate was significantly positively correlated withTr,Gs, ALMC,PAR,Ta, the ratio of chlorophyll a to chlorophyll b, the specific leaf weight, the width of stoma, the length of stoma and width of stomata aperture. In conclusion, the pruning could change the leaf morphological characteristics and anatomical structure characteristics and photosynthetic efficiency of the leaves, which were beneficial to the growth ofChimonanthus praecox.关键词
蜡梅/修剪/光合作用/叶绿素/气孔/叶片解剖结构Key words
Chimonanthus praecox/pruning/photosynthesis/chlorophyll/stoma/leaf anatomical structure分类
农业科技引用本文复制引用
宋碧玉,周兰英,蒲光兰,蒋天仪,余婷,范元英..修剪对蜡梅光合作用和叶片解剖特征的影响[J].湖南农业大学学报（自然科学版）,2017,43(5):533-538,6.基金项目
国家自然科学基金项目(41371230) （41371230）
