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Chinese Agricultural Science Bulletin ›› 2006, Vol. 22 ›› Issue (6): 301-301.

Special Issue: 水稻； 农业生态

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Influence of Various Composing Proportions of Rice Brown Planthopper Biotypes on Resistance of Rice Varieties

Huang Suosheng,, Huang Fengkuan, Wei Sumei, Long Liping, Jiang Xianbin,, Cheng Zhengxin   

  • Online:2006-06-05 Published:2006-06-05

Abstract: The influence of various composing proportions of rice brown planthopper biotypeⅡ and biotype Bangladesh on resistance of rice varieties were studied by using the rotational composite design of quadratic regression. The result indicated that the resistance of IR36 will be changed to susceptible when the proportion of biotype Bangladesh was 69.40% and that of biotypeⅡ was from 30.04% to 30.60%.