摘要
研究了蛭石引发处理对‘新矮青'、‘新夏青二号'、‘夏冬青'和‘华王'不结球白菜种子在不同温度下发芽特性和幼苗抗氧化特性的影响。结果表明:蛭石引发处理后,不结球白菜种子的发芽率、发芽势、发芽指数、活力指数和幼苗干鲜重、超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)的活性均高于对照;膜脂过氧化产物丙二醛(MDA)含量降低;可溶性蛋白质和可溶性糖的含量均显著高于对照,不同品种的引发效果存在差异。以上结果显示,蛭石引发提高了不结球白菜种子的活力并增强了幼苗的耐低温性。
The seeds of 4 pakchoi cultivars--＇ Xin Aiqing＇, ＇Xin Xiaqing 2＇, ＇Xia Dongqing＇, ＇Huawang＇ --were used as test materials, and the effects of priming treatment with vermiculite on both seed germination and seedlings＇ physiological characters were studied under different tempera- tures. The results showed that after the priming treatment the germination rate, germination vigor, germination index and vitality index of seeds were higher than those of the control, and the priming treatment also significantly improved the fresh and dry seedling weights and the activities of superox- ide dismutase （SOD）, peroxidase （POD） and catalase （CAT） of seedlings but decreased the content of malondiadehyde（MDA） ,resulting in that the soluble protein and soluble sugar contents of the seed- lings were significantly higher than those of the control though there were some differences in the priming effect on different cultivars. From the above results it was concluded that priming treatment with vermiculite could improve both seed vigor and low temperature tolerance of the seedlings.
出处
《上海农业学报》
CSCD
北大核心
2013年第5期40-44,共5页
Acta Agriculturae Shanghai
基金
上海市国际科技合作基金(11310706300)资助
关键词
蛭石引发
白菜
种子萌发
抗氧化酶
低温胁迫
Priming treatment with vermiculite
Pakchoi
Seed germination
Antioxidant enzyme
Low temperature stress
