南京林业大学学报（自然科学版）2012，Vol.36Issue(6)：53-57,5.
不同纬度引种地马来甜龙竹(Dendrocalamus asper)光合特性的比较
Comparison of the photosynthetic characteristics of Dendrocalamus asper introduced in different latitude regions
摘要
Abstract
Through the research on photosynthesis of bamboo species (Dendrocalamus asper) introduced from Thailand and planted in Zhejiang, Fujian and Guangdong provinces, their physiological adaptation response to different environments during domestication process were discussed. Results got in the 3 experimental fields were as follows; Photosynthetic capacity of D. Asper was significantly different in three different regions. Its net photosynthetic rate ( Pn ) , phto-synthetic capacity, transpiration rate( Tr) etc. Varied with the latitude,I. E. ,the one in Rui'an where has the highest latitude and relatively low light and temperature showed lower photosynthetic capacity than those in Hua'an and Guangning. The diurnal change of Pn in Rui'an demonstrated a "single-peak", whose peak time appeared at 12:00 am, while the other two were "twin peaks" , whose peak time appeared at 10:00 and 14:00 respectively, and the first peak was higher than the latter. The photoresponse characteristic parameters also demonstrated that the photosynthesis capacity of D. Asper in Rui'an was weaker than the other two places. The Pn,max in Rui'an was only about 80 % of that in Hua'an and Guangning. Rui'an's light compensation point(P1c) and light saturation point(P1s) were also very low, only 38.4 and 712.60 μmol/(m · s) respectively. Among three places, P1c and P1s of D. Asper's in Hua'an was the highest. In the morning, the Gs was the essential factor to Pn, comparing that Pn might be effected mainly by other factors in the afternoon. Gs in Rui'an was obviously lower than that in the other two regions, therefore, the intercellular CO2 concentration and Pn in Rui'an was the lowerest among the three. The dormancy of Pn in the noon time was mainly caused by the inhibition of GB, while in the afternoon, the intercellular CO2 concentration kept high, as the low rate of Pn was caused by non-stomatal factors.关键词
马来甜龙竹(泰国种源)/引种/光合生理/光响应Key words
Dendrocalamus asper (Thailand indigenous species) /introduction/photosynthetic physiology/photoresponse分类
农业科技引用本文复制引用
杜旭华,丁兴萃,陈岩,吴寿国,邹跃国,巫广文..不同纬度引种地马来甜龙竹(Dendrocalamus asper)光合特性的比较[J].南京林业大学学报（自然科学版）,2012,36(6):53-57,5.基金项目
浙江省团队建设项目(2011F20008) （2011F20008）
浙江省自然科学基金项目(Y3110441) （Y3110441）
浙江省科技厅院所扶持项目(2008F1001) （2008F1001）
