选用黄瓜总黄酮含量有显著差异的2个品系,即华南型Ma7、华北型M6配制杂交组合(Ma7×M6),并构建杂交组合的6世代群体(P1、P2、F1、B1、B2和F2),用分光光度法测定黄瓜总黄酮含量,探索其遗传规律.结果表明,总黄酮含量次数分布显示的B1、B2和F2分离群体均呈现连续分布且出现多峰或单峰偏态,表现为主基因+多基因的数量遗传特征.多世代联合分析表明:黄瓜总黄酮含量遗传模式符合2对加性-显性-上位性主基因+加性-显性-上位性多基因模型(E-O模型)；主基因遗传率为2.12％～65.89％,多基因遗传率为0～46.72％,B2和F2群体主基因的遗传率比多基因的遗传率高,环境方差对表型方差的影响占有一定比重,即环境对总黄酮含量的遗传影响较大,对于这个性状适于高代选择.%Six-generations of the hybridization combination, F,, F2, backcrosses Bi and B2 and their parents P, and P2, were made with two cucumber varieties, Southern China types Ma7, Northern China types M6. Inheritance of total flavonoids contents measured with spectrophotometer was studied through joint analysis of multiple generations. The frequency of total flavonoids contents in B,, B2 and F2 populations displayed one asymmetry peak distribution or multimodal distribution, indicating that the trait was quantitative in nature and controlled by major gene plus polygene. The results of joint segregation analysis suggested that total flavonoids contents fitted the pattern of additive -dominance -epitasis major gene plus additive -dominance -epitasis polygene (E-0 model). The major gene heritability was 2.12%~65.89% and polygene heritability was 0%~46.72%. In B2 and F2 generations, the major gene heredity rate was higher than the polygene heredity rate, the effects of environment variance on the phenotype variance had the certain proportion, I.e., environment could play the major role for the inheritance of total flavonoids contents which the trait could be selected in the high generation selection.
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