摘要
本文研究了蔬菜性状特征对ＮＯ３－含量变化的关系，指出叶片光滑、色淡的类型要比叶片皱缩、色深的类型ＮＯ３－含量低。通过亲子代硝酸盐含量变异的分析以及对杂交后代群体不同株系硝酸盐含量变化的分布状况，初步认为蔬菜硝酸盐含量主要由累加基因所控制，可通过筛选低ＮＯ３－的亲本杂交，有可能获得ＮＯ３－含量低且高产的杂交一代品种，育种实践验证了上述分析的正确性。
The researches on the relationship between nitrate content and leaf characters showed that varieties with light color and smooth surface leaf contained lower nitrate content than that of varieties with deep color and wrinkled surface leaf. The analyses on the nitrate content variation between parents and filial generation and on the nitrate content distribution among different lines of filial generation population showed that the nitrate content in spinach was controlled by the additive genes. Breeding practice also proved that the hybrid with low nitrate content and high yield could be obtained by crossing parents with low nitrate content.
