遮光对谷子光合性能及快速叶绿素荧光动力学特征的影响

时丽冉,郝洪波,崔海英,李明哲

Effects of Shading on Photosynthetic Characteristics and Rapid Chlorophyll Fluorescence Kinetic Characteristics of Foxtail Millet

Liran Shi,Hongbo Hao,Haiying Cui,Mingzhe Li

表1 不同遮光处理对谷子叶绿素含量、净光合速率、叶面积及产量的影响

Table 1 Effects of different shading treatments on chlorophyll content, net photosynthetic rate, leaf area and yield of millet

测定指标Measurement index 生育期 Growth stage 遮光率Shading rate 0 10% 20% 30% 40% 50% 70% 叶绿素含量Chlorophyll content (SPAD) 拔节期Jointing stage 46.3a 46.9a 45.7a 43.6a 39.5b 36.9bc 32.4c 灌浆期Filling stage 52.9a 53.8a 51.8a 46.7b 43.4bc 40.6c 34.8d 净光合速率Net photosynthetic rate [μmol/(m2·s)] 拔节期Jointing stage 21.6a 21.8a 20.9a 17.5b 14.3c 13.1c 11.7d 灌浆期Filling stage 27.1a 28.0a 27.2a 26.0a 23.5b 19.8c 13.3c 叶面积 Leaf area (mm2) 拔节期Jointing stage 5 798a 5 810a 5 787a 5 433b 5 387b 4 770c 3 623d 灌浆期Filling stage 7 199a 7 203a 7 180a 6 957b 6 326c 5 108d 4 310e 产量Yield (kg/hm2) 5 153b 5 331a 5 130b 4 375c 4 106d 3 580e 1 792f