Abstract: Two inter subspecific hybrid DH population under 0.40 mmol/L NaCl stress were used to analyze genetic trait of seedling height by using major genes plus polygenes mixed model.The result showed that,seedling height was controlled by two major gene expressing cumulative effect and complementation,multi-gene heritability was 28.56% and 50.28%,minor-polygene heritability was 42.54% and 29.94%,environment controlled the rest of that.DH-2 population was more suitable for gene locating and clone in the following step because of the manifestations of multi-gene heritability and minor-polygene heritability and the separation degree.Genotype difference between two parents and the range of extreme value can be used as selection criteria when choose population for genetic analysis.

Key words: Rice, Salt stress, Seedling height, Inheritance, DH population, Major genes plus polygenes mixed model

CLC Number: 

• S332.6

• Q311+.1