摘要
以韩研四号黄瓜为材料,研究了重金属铬(Cr)处理对黄瓜种子萌发及早期生长发育的影响。结果表明:六价铬(Cr6+)处理可促进黄瓜种子萌发,提高种子的发芽率和发芽势;低浓度(<2 mg/L)Cr6+处理对黄瓜种子萌发后芽和根的伸长生长基本没有影响;但当Cr6+浓度高于5 mg/L时,芽和根的伸长生长则受到显著抑制,且抑制作用随着处理浓度的增大而增大,其对根的抑制作用明显大于对芽的抑制;此外,Cr6+浓度为0.5～50 mg/L对黄瓜幼苗的鲜重积累和侧根的发育均有显著的抑制作用。
The 4th cucumber varieties of the Korean as the trial material was used to study the heavy metal （Cr^6＋ ） treatment on cucumber seed germination and early growth and development. The results indicated that： Cr^6＋ treatment could promote germination of cucumber seeds and improve the seed germination rate and germination energy; low concentration of Cr^6＋ （less than 2 mg/L） treatment hardly affected the growth and elongation of roots and buds of cucumber seedling; but when concentration of Cr^6＋ was higher than 5 mg/L, the growth and elongation of buds and roots was significantly inhibited, and with the concentration increased, inhibition increased, and in of fresh weight of cucumber seedling and the development of lateral roots hibition of roots was more than that of buds; Cr^6＋ treatment （0.5-50 mg/L） significantly inhibited the accumulation.
出处
《广东农业科学》
CAS
CSCD
北大核心
2009年第8期75-77,共3页
Guangdong Agricultural Sciences
基金
永城市自然科学基金项目(200810306)
关键词
铬
黄瓜
胁迫
种子萌发
Chromium
cucumber
stress
seed germination
