摘要
采用盆栽土培试验方法,以3种南方常见品种的小白菜为供试材料,研究镉(Cd)对不同品种小白菜生长及各营养品质指标的影响。结果表明,四季矮脚黑叶甜白菜种子萌发率以及幼苗根系伸长生长受Cd影响较其他两品种小;Cd还明显影响小白菜各营养品质指标的含量。当Cd处理浓度为0.5 mg/L时,各品种小白菜的叶绿素含量都较对照增加,而当处理浓度大于0.5 mg/L时则呈下降趋势;粗纤维含量则随着Cd处理浓度的增大而增大;而各品种的可溶性糖含量都是呈下降趋势;但总体来说黑叶葵扇白菜受Cd影响较大,而四季黄叶小白菜受Cd影响较小,四季矮脚黑叶甜白菜则居中。
A pot culture experiment was carried out to determine the effect of cadmium on the growth and nutrition quality of three different pakchoi varieties which were very common in south china. The results showed that the seed germination rates and the seedling root elongation growth of vt. Sijiaijiaoheiye were less affected by Cd than the other two varieties,vt. Heiyekuisan and vt. Sijihuangye. Cd treatments also influenced the nutrition quality indicators obviously. The contents of chlorophyll increased compared with CK under Cd treatment at 0. 5 mg/L,but decreased over 0. 5 mg/L. The contents of crude fibre increased with the increase of Cd treatment levels,while the dissolubility sugar contents tends to decrease with increasing Cd treatment concentrations. As a whole ,vt. Heiyekuisan was most affected by Cd treatments and vt. Sijihuangye was the least ,while the effect on vt. Sijiaijiaoheiye was median.
出处
《广西师范大学学报（自然科学版）》
CAS
北大核心
2010年第2期112-116,共5页
Journal of Guangxi Normal University:Natural Science Edition
基金
广西环境工程与保护评价重点实验室资助课题
国家自然科学基金资助项目(40872213)
关键词
镉
小白菜
生长
营养品质
cadmium
pakchoi
growth
nutrition quality
