茶叶科学2016，Vol.36Issue(3)：285-292,8.
不同品种茶树叶片功能性状及光合特性的比较
Comparison of Leaf Functional and Photosynthetic Characteristics in Different Tea Cultivars
摘要
Abstract
The leaf functional and photosynthetic characteristics were studied in 18 tea cultivars to explore their potential relationships. The leaf functional characteristics contained leaf area, leaf index (LI), specific leaf area (SLA), leaf dry matter content (LDMC), Chla, Chlb, Chl a/b, Chl and Car. The photosynthetic indexes included net photosynthetic rate (Pn), stomatal conductance (Gs), intercellular CO2 concentration, transpiration rate (Tr) and water use efficiency (WUE). The results showed that the LI, LDMC and Gs had low coefficients of variation (CV<10%) Whereas the CV of the rest 11 indices ranged from 15.08% to 42.69%, indicating a high level of diversity. The SLA was significantly and negatively correlated with LDMC, but LI and LA had no significant correlations with other leaf functional indicators. The LDMC was significant correlated with photosynthetic pigments. The Chla, Chlb, Chla/Chlb, Chl and Car were significantly and positively correlated with each other. The Pn, Gs and Tr had significant correlationship with each other. The Gs was significantly and positively correlated with Ci. The photosynthetic rate was mainly affected by stomatal limitation. The Pn and Tr had significant or highly significant correlationship with photosynthetic pigments, and the Pn had significant and positive correlation with LDMC. The results showed that higher photosynthetic pigments in tea cultivars had stronger photosynthetic production and dry matte accumulation. However, the Gs and WUE were not significantly correlated with leaf functional indices. The new tea cultivar-14 had relatively low SLA, but high LDMC, Pn and WUE. Therefore, it might be a tea cultivar with high drought resistance and photosynthetic efficiency, which could be used as a new material for tea breeding.关键词
茶树/不同品种(系)/叶片功能性状/光合特征Key words
tea plant/different tea cultivars/leaf functional characteristics/leaf photosynthetic characteristics分类
农业科技引用本文复制引用
王峰,陈玉真,王秀萍,尤志明,陈常颂..不同品种茶树叶片功能性状及光合特性的比较[J].茶叶科学,2016,36(3):285-292,8.基金项目
国家茶叶产业技术体系（CARS-23）、福建省农业科学院创新团队项目（STIT-Ⅰ-0302、STIT-Ⅰ-0305）。 （）
