热带作物学报2017，Vol.38Issue(9)：1638-1644,7.DOI:10.3969/j.issn.1000-2561.2017.09.010
国产草坪型狗牙根优良品种的抗盐性及与钠钾离子含量的关系
Salinity Tolerance and Relationship with Shoot Na+ and K+ Contents in the Domestic Turf-type Bermudagrass Cultivars
摘要
Abstract
Bermudagrass (Cynodon Rich.) is a salinity-tolerant turfgrass,and has good application potential in saline soil.Studying the salinity tolerance and the relationship with the shoot Na+ and K+ contents in bermudagrass cuhivars was beneficial to the rapid selection of salinity tolerance cuhivars and further salinity tolerance breeding.Salinity tolerance was evaluated in some Chinese bermudagrass cultivars based on the indicators of relative leaf firing percentage,relative shoot clipping dry weight and relative root clipping dry weight.The results showed that the salinity tolerance of the tested cultivars decreased in the following order:Suzhi No.2 ＞ Yangjiang ＞ Handan ＞Baoding＞Tifgreen lⅡ＞Kashi＞Tifgreen＞Nanjing＞C1 ＞C2.Shoot K+ content reduced,and shoot Na+ content and Na+/K+ ratio increased in all bermudagrass cultivars under salinity stress.Correlation between salinity tolerance and shoot ion content was associated with the types of bermudagrass,in which salinity tolerance was significantly correlated with the shoot Na+ content in common bermudagrass (C.dactylon),but was significantly correlated with the shoot K+ content in hybrid bermudagrass (C.transvaalensis x C.dactylon).关键词
狗牙根/优良品种/抗盐性/钠钾离子含量Key words
Bermudagrass/excellent cultivar/salinity tolerance/Na+ and K+ content分类
农业科技引用本文复制引用
张莉,宗俊勤,黄玉玲,刘建秀,陈静波..国产草坪型狗牙根优良品种的抗盐性及与钠钾离子含量的关系[J].热带作物学报,2017,38(9):1638-1644,7.基金项目
江苏省苏北科技专项(No.BN2016141) （No.BN2016141）
中国科学院A类战略性先导科技专项(No.XDA13020500) （No.XDA13020500）
海洋公益性行业科研专项经费项目(No.201505023) （No.201505023）
江苏省科技基础设施项目(No.BM2015019) （No.BM2015019）
江苏省自然科学基金项目(No.BK20151371). （No.BK20151371）
