Abstract: Select two cucumbers which were stable personality and different ecotype.Then mix two positive and negative combinations.The result of joint analysis showed that it was not obvious discrepancy between the positive and negative combinations about ratio of yellow line and fruit length.It showed that yellow line was subjected by nucleus gene.In this paper inheritance of the yellow line and fruit length ratio of cucumber was investigated by joint analysis and the major gene plus poly-genes model of quantitative traits analysis of multi-generation(P1,P2,F1,B1,B2,F2).Another analysis showed that the inheritance of yellow line ratio was controlled by a major gene with additive-dominance effects plus polygene with additive-dominance effects(the D model).Heritability values of the major genes of B1,B2 and F2 population were estimated as 95.8%,93.39%and 14.99%.Heritability values of poly-genes were between 1.36% and 54.04%.The major gene plus poly-genes effect(d)and dominance effect(h)was-41.78 and-35.96 respectively,and the additive-dominance effects of this analysis were both negative with small difference.So the inheritance of the yellow line may be controlled by a major gene with additive-dominance effects plus polygene with additive-dominance effects.

Key words: Cucumber, Yellow line length, Fruit length, Inheritance

CLC Number: 

• S642.2