摘要
为了确定化学引发剂对不结球白菜种子的引发效应,本试验以不结球白菜品种暑绿和寒笑种子为试材,分别采用不同种类和不同浓度化学试剂对种子进行引发处理,以筛选出适宜的引发试剂和引发浓度。结果表明:在氯离子、磷酸根离子和硝酸根离子化学引发剂中,氯离子盐溶液和硝酸根离子盐溶液引发效果类似,均比磷酸根离子盐溶液的引发效果好。氯离子盐溶液中,1%CaCl2引发效果较好,暑绿发芽势和发芽率分别达到90.67%和94.67%,寒笑发芽势和发芽率分别为85.33%和85.33%,发芽指数和活力指数也显著高于对照和其他处理;硝酸根离子盐溶液中,0.5%KNO3处理的发芽势、发芽率、发芽指数和活力指数显著高于对照和其他处理,暑绿发芽势和发芽率分别达到90.00%和90.67%,寒笑发芽势和发芽率分别为88.00%和92.00%;磷酸根离子盐溶液除1%KH2PO4外,其他溶液引发效果均不理想;不同浓度的PEG引发处理均显著提高了种子的发芽势、发芽率和活力指数,但对发芽指数影响不显著。综合比较各化学引发剂对种子发芽的影响,以1%CaCl2为最佳选择,0.5%KNO3的引发效果次之,10%PEG再次之,而K3PO4的引发效果较差,会导致种子不能正常萌发。
To determine the chemical initiator＇s priming effects on the Chinese cabbage seeds,the Chinese cabbage cultivar Shu Lv and Han Xiao seeds were selected as materials,and used different types and different concentrations of chemical reagents to priming the Chinese cabbage seeds.The results showed that in the chloride ion,phosphate ion and nitrate ion chemical initiator,the priming effects of chloride salt solution were similar to the nitrate salt solution,both priming effects were more significant than that of the phosphate ion salt solution.The priming effect of 1% CaCl2 among chloride salt solution was better relatively,Shu Lv germination energy and germination rate reached 90.67% and 94.67%,respectively.Han Xiao germination energy and germination rate were respectively up to 85.33% and 85.33%,and seed germination index and vigor index significantly exceeded the control and other treatments.Of Nitrate salt solution,0.5% KNO3 in germination energy,germination rate,germination index and vigor index were significantly beyond the control and other treatments.Shu Lv respectively got germination energy of 90.00% and germination rate of 90.67%.Han Xiao obtained germination energy of 88.00% and germination rate of 92.00%,while the priming effects of the phosphate ion salt solution（except 1% KH2PO4） were not ideal.Different concentrations of PEG priming treatment significantly increased the seed germination energy,germination rate and vigor index,but no significant effect on germination index.Comprehensive comparison effect of various chemical initiators on seed germination,1% CaCl2 came the first,0.5% KNO3 ranked the second,and the third was 10% PEG,while K3PO4 had the worst priming effects,and leading to seed germination abnormal.
出处
《种子》
CSCD
北大核心
2011年第2期8-12,共5页
Seed
基金
国家科技支撑计划项目(2008BADB1B06)
关键词
化学试剂
引发剂
不结球白菜
种子
发芽特性
chemical reagent
initiators
chinese cabbage
seed
germination characteristics
