Comparison of photosynthetic performance and resource use efficiency of 4 herbaceous species in coastal frontier of Shandong Peninsula

作者 Liu Yanli; Hou Yuping; Bu Qingmei; Bai Xinfu

期刊 Journal of Anhui Agricultural University , 2018,4:45

摘要 This study aimed to understand the differences between the four herbs in photosynthetic performance and resource use efficiency in Yantai coastal frontier. The photosynthetic performance indicators of 4 herbs, Messerschmidia sibirica, Carex kobomugi, Calystegia soldanella and Cynodon dactylon were investigated using a TPS-2 portable photosynthesis system, and the carbon use efficiency (CUE), photosynthetic nitrogen-use efficiency (PNUE) and ash content were also determined. Additionally, a comprehensive assessment of the resource use efficiency of 4 herb species was performed with the subordinate function. The results showed that the light saturation point was relatively high in all the 4 species which are able to grow well under high light intensity. Meanwhile, C. dactylon showed the strongest capacity in photosynthesis, and M. sibirica was the weakest. In addition, the light use efficiency (LUE) and water use efficiency (WUE) were significantly higher in C. dactylon and C. kobomugi than in M. sibirica and C. soldanella, moreover, C. dactylon was at the top in the PNUE and CUE. In terms of the mineral use efficiency (MUE), M. sibirica and C. soldanella were significantly higher than C. dactylon and C. kobomugi. The comprehensive analysis showed that the CIR (comprehensive indices of resource use efficiency) sorted descending order: C. dactylon> C. kobomugi. C>soldanella >M. sibirica.

涉及物种 筛草 Carex kobomugi 狗牙根 Cynodon dactylon 肾叶打碗花 Calystegia soldanella