摘要
以陵水、保亭、万宁3地的野生益智(Alpinia oxyphylla Miq.)为材料,研究不同地点益智的光合特性,包括净光合速率、气孔导度、胞间CO2浓度、蒸腾速率、叶面积、叶绿素含量、土壤养分及它们之间的关系。结果表明,除保亭和万宁的气孔导度没有显著差异外,其他光合指标都存在显著差异;3地的叶面积存在显著差异,保亭和万宁、陵水和万宁的叶绿素含量也存在显著差异;陵水与万宁、保亭与万宁的土壤氮、磷含量差异都达到了显著水平,保亭与陵水、万宁与陵水的土壤钾含量差异达到了显著水平;净光合速率与叶面积、叶绿素含量呈显著正相关,胞间CO2浓度与叶绿素含量呈极显著正相关;土壤磷含量与益智的高度和密度呈显著或极显著正相关,与净光合速率呈显著负相关,与胞间CO2浓度呈极显著正相关;钾含量与净光合速率、蒸腾速率呈极显著负相关;氮含量与气孔导度、蒸腾速率呈显著正相关。试验结果为提高益智的品质,为野生益智的驯化、改良和保护提供了基础资料与科学依据。
Photosynthetic characteristics,including net photosynthetic rate（Pn）,stomatal conductance （Gs）,intercellular CO2 con- centration （Ci） ,transpiration rate （Tr）,leaf area,chlorophyll content, soil nutrients of wild populations in Alpinia oxyphylla Miq. from Lingshui,Baoting and Wanning were studied. Results showed that there were difference in other photosynthetic index,ex- cept stomatal conductance Gs. There were difference in leaf area among three area,and in chlorophyll content between Ling- shui and Baoting,Wanning. Total N and P in soil were significantly differentbetween（Baoting,Lingshui） and Wanning. Total K in soil were significantly different between （Baoting,Wanning） and Lingshui. There were significantly positive correlation be- tween P, and leaf area,chlorophyll content. There were extremely positive correlation between intercellular Ci and chlorophyll content. There were significantly positive correlation between total P in soil and height,density. There were significantly nega- tive correlation between total P in soil and Pn, while extremely positive correlation with intercellular Ci. There were extremely negative correlation between total K in soil between Pn, Tr. There were significantly positive correlation between total N in soil and stomatal conductance G, Tr. The basic data and scientific basis were provided to improve the quality, domestication and protection of wild populations in A. oxyphylla.
出处
《湖北农业科学》
2017年第4期678-681,共4页
Hubei Agricultural Sciences
基金
国家自然科学基金项目(31670345)
海南省自然科学基金项目(314081)
海南师范大学生物学重点学科资助项目(2015)
