【摘要】 试验研究了氮离子注入黄瓜种子后引起的当代诱变效应。结果表明,氮离子注入剂量在0.05×1014～1 000×1014N+/cm2范围内对黄瓜的种子发芽率、出苗率、第一雌花节位和黄瓜子产量等影响不大;成苗率则随着注入剂量的增大而减少;各个处理对株高的日增长量均有不同程度的影响,以5×1014N+/cm2处理的株高日平均增长高度最大。在试验处理范围内,氮离子处理区间在植株和商品瓜形态上表现出了广泛的变异,以300×1014N+/cm2处理的变异率最高,其子叶畸形率、植株形态变化率和商品瓜变异率分别达到了16.0%、4.3%和5.2%。更多还原

【Abstract】 The mutagenic effect of N+ implantation in cucumber(Cucumis sativus L.) seeds on the same generation of cucumber was studied.The results showed that the effect of N+ implantation at the dose of 0.05×1014 to 1 000×1014 N+/cm2 in cucumber seed on germination rate,emergence rate,position of the first female flower and cucumber seed yield was small;while seedling rate decreased with the increase of implantation dose.Daily growth of plant height differed in different treatments,and was the highest with 5×1014 N+/cm2 treatment.In the test range,plants and commodity melon morphology exhibited wide variability.The mutation rate of 300×1014 N+/cm2 treatment was the highest,the cotyledons deformity rate,plant morphology differentiation rate and commodity melon variation rate achieved 16.0%,4.3% and 5.2% respectively.更多还原