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对10个栽培品种大豆种子进行不同盐浓度处理(3、6、9、12、15、18 g.L-1)后,统计了种子的发芽率、相对发芽率、发芽势、相对胚根长度,分析了其耐盐浓度、耐盐半致死浓度、耐盐极限浓度和各指标隶属函数,综合评价了各品种的耐盐性。随着盐浓度的增加,品种间的发芽势、发芽率和胚根长度都呈下降趋势,品种间存在显著差异。当NaC l浓度增加到9 g.L-1时,各品种的发芽率、发芽势差异最大。在12 g.L-1的盐浓度下品种间相对胚根长度差异最大。各品种中耐盐浓度最高的为绥农10(可耐12 g.L-1的盐),其次为抗线4和飞龙1(可耐9 g.L-1的盐)。耐盐半致死浓度最大的品种为绥农10。耐盐极限浓度最高的也是绥农10。综合分析各指标抗盐隶属值,各大豆品种的耐盐性强弱顺序依次为:绥农10>抗线4>丰豆1>龙选1>合丰55>飞龙1>垦丰16>绥农14>黑农48>黑农44。
The germination rate, relative germination rate, germination potential, relative radicle length of the seeds of 10 cultivated soybean seeds under different salt concentrations (3, 6, 9, 12, 15 and 18 gL-1) The salt tolerance, salt tolerant lethal concentration, salt tolerance limit concentration and membership functions of each index were used to evaluate the salt tolerance of all cultivars. With the increase of salt concentration, the germination potential, the germination rate and the radicle length all showed a downward trend, and there were significant differences among the varieties. When the concentration of NaC l increased to 9 g.L-1, the germination rate and germination potential of the varieties differed the most. At 12 g.L-1 salt concentration, the relative radicle length difference among breeds was the largest. Salt tolerance was the highest among all cultivars, Suinong 10 (resistant to 12 g · L-1 salt), followed by Anti-Line 4 and Feilong 1 (resistant to 9 g · L-1 salt). Salt tolerant concentration of the largest species Suinong 10. Salt tolerance is the highest concentration of Suinong 10. Comprehensive analysis of salt tolerance of each index value, the order of salt tolerance of soybean varieties are as follows: Suinong 10> Line 4> Fengdou 1> Longxian 1> Hefeng 55> Dragon 1> Kenfeng 16> Sui Farmers 14> Heinong 48> Heinong 44.