摘要
采用发芽试验和水培试验,对新疆30个主要棉花品种进行系统的耐盐性鉴定。结果显示:芽期参试的30个品种中,耐盐级别为1级,属高耐盐的仅占16.67%;耐盐级别为2级,属耐盐品种的占到43.3%;盐敏感材料和中等耐盐材料10份,占品种总数的40.00%。苗期耐盐性结果显示:没有高耐盐材料,有8个品种耐盐级别为2级,耐盐级别为3级的材料占63.30%。此外,指标间的相关性分析发现:芽期相对芽长与相对根长呈极显著的正相关,相对芽长与盐害指数呈显著的负相关,苗期根冠比与盐害指数呈显著正相关,且棉花芽期的耐盐特性可间接反映苗期的耐盐性。
Germination experiments and hydroponic experiments were carried out to identify the salt tolerance of30 cotton varieties planted in Xinjiang. The results revealed that,in the 30 cotton varieties,proportion of the cotton varieties with high salt tolerance（ at level Ⅰ） at their bud stage was 16. 67% only,that with certain salt tolerance（ at level Ⅱ） was 43. 30%,and that sensitive to salt and with moderate salt tolerance was 40. 00%. At seedling stage,there was no any cotton variety with high salt resistance,there were 8 cotton varieties with salt tolerance at level Ⅱ,and the proportion of cotton varieties with salt tolerance at level Ⅲ was 63. 30%. At bud stage,there was an extremely significant positive correlation between the relative bud length and the relative root length,but a significant negative correlation between the relative bud length and the salt-harmful index. At seedling stage,there was a significant positive correlation between the root-shoot ratio and the salt-harmful index,and the salt tolerance at bud stage could be used to indirectly reflect the salt tolerance at cotton seedling stage.
出处
《干旱区研究》
CSCD
北大核心
2013年第6期1129-1135,共7页
Arid Zone Research
基金
国家自然科学基金项目(30900872)
国家科技支撑计划项目(2007BAC20B03)
农业部行业公益性专项(200803030)
关键词
棉花
芽期
苗期
耐盐性
新疆
cotton
bud stage
seedling stage
salt tolerance
Xinjiang
