热带作物学报2011，Vol.32Issue(7)：1235-1239,5.DOI:10.3969/j.issn.1000-2561.2011.07.010
地毯草对铝胁迫响应及临界浓度的研究
Study on Responses ofAxonopus compressus(Sw.) Beauv.to Aluminum Stress and Critical Aluminum Concentration
摘要
Abstract
Axonopus compressus (Sw.) Beauv. Was used as the main research object for the study. The different Al3+ tolerance of carpet grass were determined by turf quality, leaf color, and leaf firing percentage in hydroponics experiment. The results showed that there were significant or very significant differences between Al3+ treatments and the optimum growth of carpet grass were medium concentration (0.72, 0.96, 1.20 mmol/L) of Al3+. Too high(0, 0.24, 0.48mmol/L) or low concentrations (1.68, 1.92, 2.16 mmol/L) of Al3+ treatments inhibited the normal growth of carpet grass and led to lower turf quality. However, medium concentration(0.72 mmol/L) would contribute to turf quality of carper grass and improve their ornamental value. By building regression equation, take leaf firing percentage dropped 50% as index to determine survival, and working out lethal AP concentration of carpet grass was 2.04 mmol/L.关键词
地毯草/水培/铝胁迫/临界浓度Key words
Axonopus compressus(Svt.)Beauv./Hydroponics/Aluminum stress/Critical Al3+ concentration分类
农业科技引用本文复制引用
廖丽,黄小辉,白昌军,王志勇..地毯草对铝胁迫响应及临界浓度的研究[J].热带作物学报,2011,32(7):1235-1239,5.基金项目
国家自然科学基金项目(No.31060266) （No.31060266）
海南省自然科学基金项目(No.310031) （No.310031）
海南大学作物学省级重点项目 （）
海南大学热带作物种质资源保护与开发利用教育部重点实验室课题项目(No.2010hckled-02) （No.2010hckled-02）
海南大学博士启动基金(No.KYCD1111) （No.KYCD1111）
海南省教育科学“十一五”规划项目(No.QJ111527). （No.QJ111527）
