文档介绍：新疆农业大学硕士学位论文耐盐棉花品种筛选姓名:李寒暝申请学位级别:硕士专业:土壤学指导教师:蒋平安 20090601 耐盐棉花品种筛选摘要为了比较棉花种子耐盐能力,在室内控制条件下设6个NaCl浓度的处理,对比了新疆棉花生产中常用的陆地棉和长绒棉品种种子萌发阶段的发芽势、发芽率、吸水速率的差别;在水培和土培条件下比较了它们生长势的差别;研究了不同品种间出苗率、铃重、单株铃数、衣分及产量的差别;采用隶属函数法进行耐盐性综合评价。结果表明, 随NaCl溶液浓度的升高,不同品种的种子吸水量逐渐减少,发芽势和发芽率逐渐降低, 盐害率逐渐增加,生长势逐渐减弱。具体表现为: : 种子萌发阶段:中棉43号>军棉l号>新陆中20号>中棉49号>中棉35号>新陆中21号>豫棉17号; 盆栽阶段:豫棉17号>中棉43号>中棉49号>新陆中21号>中棉35号>军棉1 号>新陆中20号。水培阶段:中棉49号>军棉1号>中棉35号>新陆中2l号>新陆中20号>豫棉 17号>中棉43号。大田阶段:中棉43号>军棉l号>中棉35号>新陆中21号>中棉49号>新陆中 20号>豫棉17号。通过种子萌发、水培、土培和大田试验,综合评价值得出南疆陆地棉品种的耐盐性顺序为:中棉43号>军棉1号>中棉49号>中棉35号>新陆中20号>豫棉17号> 新陆中21号。。棉花种子用低盐处理不但能刺激棉花种子的发芽,而且还对棉花的生长有促进作用。。。关键词:棉花;耐盐性;综合评价;品种筛选 Study on Screening ofSalt--Tolerance Cotton Varieties Abstract Inorder tounderstand thedifferences insaltresistance between varieties,parison experiment was conducted under controlling condition with 6NaCl levels,different varieties that ale being widely grown pared by measuring thegermination potential, germination rate,absorption rate of seeds,and growth of the seedling growing in solution-cultured and pot difference ofgermination rate,bollweight,single boll,lintpercentage and lintwith varieties was -tolerance was prehensively by membership function results showed that the water absorption rateofseed,thegermination potential andgermination ratebetween varieties were salt stress ratesincreased,seedling growth ale weaken withincreasing ofthe concentration ofNaCl solution. tothe evaluation value ofthesouthXinjiang Gossypium hirsutum Linn,differentstages showed an ordered as- Germination stage:zhongmian 43>junmian 1>xinluzhong 20>zhongmian 49> zhongmian3 5>xinluzhong 21>yumian potstage:yumian 17>zhongmian 43>zhongmian 49>xinluzhong 21>zhongmian35 >junmian 1>xinluzhong 20; :zhongmian 49>junmian 1>zhongmian3 5>xinluzhong 21> xinluzhong 20>yumian 17>zhon