[Major-polygene effect analysis of resistance to bacterial blight (Xanthomonas campestris pv. oryzae) in rice].
Five crosses between resistance and susceptible were analyzed to study major-polygene effect using major-polygene mixed mode. The result showed that 3 of 5 crosses were controlled by both major gene and polygene. In addition, there were large variation of additive effect, variance as well as heredity of major gene polygene in 3 crosses. Major gene was predominant in resistant variation, but durability should be considered. We suggested that construct major-polygene system be constructed in the long run in breeding program to ensure a durable and high level of resistance to constrain fluctuation of races of Xanthomonas campestris pv. oryzae population.
Wang
J S
JS
Beijing Agricultural and Forest Academy, Beijing Vegetable Research Center, China.
Wang
J K
JK
Zhu
L H
LH
Gai
J Y
JY
D012275:Oryza / Q000235:genetics* / Q000382:microbiology*; D010935:Plant Diseases / Q000235:genetics*; D016959:Xanthomonas campestris