Abstract: The genetic performance of some characters such as plant,flower and flowering period in F1 generation with recipro-cal crosses of P42(Doritaenopsis Jiuhbao Red Rose)and P39(Doritaenopsis Ben Yu Star Red-dragon')in Phalaenopsis was studied.The results showed that the plant width,leaf length,leaf width,flower diameter and peduncle length in F1 generation declined obviou-sly which their mean were 74.1%,65.15%,79.2%,88.5% and 67.7% of parents respectively,but the over-parent individuals still existe-d in flower diameter or plant width.The genetic heritability of leaf number,flower number and flower color was strong,especially flo-wer number and flower color which their mean coefficients were 30.1% and 29.95%,and their means were 105.0% and 111.45% of parents respectively.In flower color distribution of F1 generation,the over-parent individuals were more likely to select in direct cro-ss than reciprocal cross,the over-parent individuals in direct cross accounted for 16.8% of F1 Hybrids which was 3.1% higher than r-eciprocal cross.In the genetic heritability of parents flower color,the parent of purple flower(P39)was stronger than the parent of purple with white side(P42).In the genetic heritability of flowering period,the flowering period of F1 generation tended to the parent of P39 that the peduncle growth period,flower bud period and early flowering period tended to January,March and April.

Key words: Phalaenopsis, Reciprocal crosses, Characters, F1, Genetic performance

CLC Number: 

• S682.31