10个紫花苜蓿品种耐盐性的比较研究

A Comparative Study on Salt Tolerance of 10 Alfalf Varieties

对10个紫花苜蓿品种种子分别用0%、0.3%、0.7%和1.0%的NaC l溶液进行处理,通过种子发芽率、相对发芽势、幼苗重和幼苗高对各品种种子萌发期耐盐性进行了研究。结果表明:用0.7%或1.0%NaC l溶液性鉴定较为合理;0.7%NaC l溶液处理苜蓿种子,其幼苗重和幼苗高可作为苜蓿品种耐盐的鉴定指标。0.7%、1.0%NaC l溶液处理下,通过测定第3天和第5天各品种种子的发芽势,可以鉴定耐盐性大小。对10个苜蓿品种耐盐性综合研究结果是:龙牧801和巨人201的耐盐性最强,其次是肇东、龙牧803和CW 200;新疆大叶和爱菲尼特的耐盐性最弱。

Salt tolerance of 10 alfalf varieties during geminating tion rate, the germinating energy, seedling weight and seedling period has been studied by measuring germinaheight under the treatments with 0% ,0.3%, 0.7% and 1.0% NaCl solution respectively. The results show that 0.7% and 1.0% NaCI solutions are appropriate to identify the salt tolerance of alfalfa during geminating period. The seedling weight and seedling height, are regarded as two adaptive salt-tolerant indexes under the treatment with 0.7% NaCl solution. The germinating energy of alfalf avarieties on third and fifth day is another adaptive salt tolerant index during geminating period under the treatments with 0.7% and 1.0% NaCl solution. By comprehensive analyzing germinaring energy, germination rate, seedling of 10 alfalfa is： Longmu801 and weight and seedling Ameristand 201 are strong, height, the result shows that salt toerance degree Zhaodong, Longrnu 803 and CW 200 are medium, Xinjiangdaye and Affinity are weak.