甜椒果实颜色遗传研究

Study on Heredity of Fruit Colors of Sweet Pepper

选用甜椒果实不同颜色材料配组杂交,研究了商品成熟果和生理成熟果果色遗传规律。结果表明,甜椒商品成熟果和生理成熟果果色的遗传属于质量性状遗传,分别为不同的核基因控制。商品成熟果绿色对淡黄色是由一对完全显性基因控制,淡黄色对白色是由两对具有重叠作用的显性基因控制,绿色对白色有3对基因差异,绿色基因有显性上位作用,只需1个绿色基因G的存在,即可抑制淡黄色与白色性状的表达;生理成熟果红色对橙黄色是两对具有重叠作用的显性基因控制。

The heredity of fruit color of sweet pepper was studied by making crosses between different color materials at marketable mature stage and physiological mature stage and observing the inherent laws of different generations. The results showed that the traits of fruit color belonged to qualitative characters at marketable mature stage and physiological mature stage and were controlled by nuclear genes. Green fruit (GF) vs yellow fruit (YF) was controlled by one complete dominant gene, YF vs white fruit (WF) was controlled by two duplicate dominant genes,GF vs WF had differences in three genes, and the Green gene had epistatic effect, one green gene was enough to restrain the express of YF and WF. Two duplicate dominant genes controlled red fruit vs Yellow-orange fruit at physiological mature stage. Different genes controlled the colors of fruit at marketable mature stage and physiological mature stage.