摘要
采用0.5%、1.0%和1.5%(W/W)盐水累积浸渍处理甘蔗13个双亲杂交组合的实生苗,根据受害程度和一级苗(心叶正常、部分老叶枯死)移栽盆钵后的生长情况,评价亲本组合的抗盐性。结果表明,组合间实生苗不仅受害程度差异明显,而且移栽后生长也受到不同程度的影响.发现CP72—1312×崖82—96,CP70—1133×崖82—96和CP65—357×川57—416的后代实生苗受害指数小,移栽后生长较快;而新台糖1号×崖84—125,CP72—1210×崖71—370和C0419×CP72—1312的后代群体受害重,移栽后生长受阻.试验证明,利用不同浓度的盐水处理实生苗,可作为耐盐育种有效的筛选方法.
Trial of accumulative treatment with NaCl, in which seedlings of 13 cross combinations of sugarcane were macerated in different saline concernations (0.5%, 1.0%, 1.5% respectively), was carried out to evaluate the saline resistance in cross combinations according to the degree of saline damage and the growth of the replanted first-rate seedlings whose new born leaves were normal and some older ones dead. The results showed that there were not only obviously damage differences among seedlings after NaCl treatment, but also significant effect on the growth of replanted seedlings. It was also found that seedling of CP 72-1312 x Ya 82-96, CP 70-1133×Ya 82-96 and CP 65-357×Chuang 57-416 were slightly damaged and repidly grew after replanted. The situation was turned out to be opposite in some combinations, such as ROC 1×Ya 84-125, CP 72-1210×Ya 71-370 and Co419×CP 72-1312. It was proved that saline treatment with different concerntrations in F_1 seedlings was effective in screening saline resistant varieties of sugarcane.
关键词
甘蔗
实生苗
育种
抗盐性
sugarcane
F_1 seedlings
screening for saline resistance
