GENETIC ANALYSIS ON NODE RATES OF MULTI-PISTILLATE FLOWERS IN CUCUMBER

In this study, F₁, BC₁P₁, BC₁P₂ and F₂ populations were derived from the cross between the inbred line ‘1613EF’ (P₁) with multi-pistillate flowers and the inbred line ‘YX05-3-10’ (P₂) with single pistillate flower.
The inheritance of the node rate of multi-pistillate flowers in cucumber plant was studied by joint analysis of six generations based on major gene plus polygene mixed inheritance model.
The main results were obtained as: high rate of multi-pistillate flowers node was recessive or partially recessive.
The fittest model for the character was two major genes plus polygenes mixed inheritance model.
In the F₂ population, the heritability of major genes was 84.37%. In the BC₁P₁ and BC₁P₂ populations, the heritability of major genes was 64.30 and 61.41% respectively.
In the BC₁P₁ generation, the heritability of polygenes was 16.03%, the heritability of polygenes in BC₁P₂ and F₂ was 0 and 2.83%. The environment played certain role in the rate of the nodes with multi-pistillate flowers and the environment variance was 12.8~38.6%.

IV International Symposium on Cucurbits

Xinxin Dou, Xiaoyan Zou, Xixiang Li, Di Shen, Haiping Wang

cucumber, multi-pistillate flowers, joint analysis of six generations, inheritance

https://doi.org/10.17660/ActaHortic.2010.871.13