Abstract: Two heat tolerant cabbage parents and three sensitive ones were used to analyze the combination of heat tolerant character by the way of Griffing's Ⅱ. It suggests that GCA is superior to SCA in the whole heredity and variation. That is to say, the dominant effect of heat tolerant character in cabbage is not significant, and the additive effect is most important. Two groups of heat tolerant and intolerant materials were crossed,back crossed, and self crossed to analyze the inherited models and parameters of this character. The results show that the character abides by the inheritance model of A- D- E, its hB2 and hN2 are also is much higher. So it is not practical to improve the heat resistance significantly in breeding by heterosis, but it is supposed to select the heat tolerant parent in breeding.

Key words: Cabbage, Heat tolerance, Inheritance effect

CLC Number: 

• S635.035.1