摘要
以2个山葡萄品种"双丰"、"左山二"和1个欧美杂种"金玫瑰"为试验材料,研究了NaCl胁迫下植株生长以及Na+、K+吸收和分布规律。结果表明:NaCl胁迫下,植株吸水困难,生长受到抑制,新梢生长量与叶片含水量均明显下降,"金玫瑰"生长量下降程度及叶片受害程度均低于"左山二"和"双丰"。NaCl胁迫下,Na+、K+在各器官区域分布不同,各部位Na+含量由高到低依次为茎>根>成龄叶>幼叶,不同品种间Na+升高幅度为双丰>左山二>金玫瑰;幼叶、成龄叶中K+呈升高趋势,但茎和根中变化无规律;NaCl胁迫下,植株各器官K+/Na+均显著下降,其中茎的下降幅度最大,其次为成龄叶,根系与幼叶相对较小;"左山二"和"双丰"的茎与叶片的SK,Na选择性系数呈增加趋势,而根与茎的SK,Na选择性系数呈降低趋势。
In this research, two Amur grape varieties （Zuoshaner and Shuangfeng） and an Euramerican hybrid （Jinmeigui） were used to study growth rules, absorption and distribution of Na ＋ and K ＋ of plants under NaC1 stress. The results showed that it was difficult to absorb moisture for the plant under NaC1 stress, biomass of new shoot and water content of leaf all decreased significantly. The decreasing degree of growth and danger degree of leaf in Jinmeigni were lower than those in Zuoshaner and Shuangfeng under NaCl stress. There was a different distribution of Na ＋ and K ＋ in different organs, and Na ＋ content in different parts followed the order： stem 〉 root 〉 mature leaf〉 young leaf; the Na＋ content in different va- rieties followed the order： Shuangfeng 〉 Zuoshaner 〉 Jinmeigui. The K ＋ content showed an increasing trend in young and mature leaves, however, it changed irregularly in stem and root. Under NaC1 stress, K ＋/Na ＋ in plant decreased significantly. The stem had the highest change range, and mature leaf had significantly higher change range than that in root or young leaves. SK, Na transport selectivity coefficient from stem to leaf showed an increasing trend in Zuoshaner and Shuangfeng, however, from root to stem showed a decreasing tendency.
出处
《吉林农业大学学报》
CAS
CSCD
北大核心
2013年第2期192-197,205,共7页
Journal of Jilin Agricultural University
基金
作物种质资源保护项目(NB2012-2130135-37)
现代农业产业技术体系建设专项资金资助项目(CARS-30-7)
吉林省科技发展计划项目(2010024)
