论文部分内容阅读
以与浙辐 80 2成对的、具有RathuHeenati抗白背飞虱基因的近等基因系“浙抗” ,以及以 2∶1比例混合“浙抗”与浙辐 80 2种子构成的抗 感白背飞虱混合群体“浙混”为材料 ,采用田间白背飞虱的种群调查和水稻产量及千粒重的测定 ,结合室内蜜露量、产卵量和卵发育率的测定 ,研究了混植抗感白背飞虱近等基因系材料对白背飞虱的控制效果。试验结果表明 ,“浙混”上的成虫及若虫数量均与在抗虫的RHT和“浙抗”上的相近 ,分别是在感虫的浙辐 80 2和TN1上的 1/2和 1/4～1/5。白背飞虱在“浙混”和“浙抗”上分泌的蜜露量分别为 9.0 3和 6 .97mg/♀·d,显著地低于在浙辐 80 2 (17.6 4mg/♀·d)和TN1(19.14mg/♀·d)上的。白背飞虱在“浙混”与“浙抗”、浙辐 80 2与TN1上的产卵量和卵发育率都没有显著性差异。与“浙抗”相比 ,“浙混”和浙辐 80 2的稻谷产量分别增加了 1.17%和减少了 19.11%,“浙混”和浙辐 80 2的千粒重分别减少了2 5 7%和 9.84%。因此 ,混植抗感白背飞虱水稻材料可以有效地抑制白背飞虱的发生 ,还可以保证水稻产量不受损失。
The Zhejiang strain, which is paired with Zhefu 80 2, has the RathuHeenati anti-WBPH gene, and the anti-infestation white which is composed of Zhezhe and Zhefu 80 2 in a 2: 1 ratio The mixed population of planthopper, “Zhejiang Mix”, was used as material to investigate the effects of mixed planting on resistance by using the population survey of whitebacked planthopper, and the measurement of 1000-grain weight and yield of honeydew in the field. Control effect of the near isogenic lines of Sogatella furcifera on whitebacked planthopper. The results showed that the number of adults and nymphs in “Zhejiang Mixture” were similar to those in RHT and Zhekang, respectively, which were respectively at 1/2 and 1 / 4 ~ 1/5. The honeydew amounts of whitebacked planthopper were 9.03 and 6.97mg / ♀ · d, respectively, which were significantly lower than those in Zhejiang 80802 (17.6 4mg / ♀ · d) And TN1 (19.14 mg / kg · d). The results showed that there was no significant difference in egg production and egg development rate between “Zhejiang-Zhejiang” and “Zhejiang-resistant” and white -backed planthopper, Zhejiang-Zhejiang and Zhejiang-Zhejiang. Compared with “Zhe-Kang”, the yield of paddy with “Zhe-Mix” and Zhe-Fu-80 2 increased by 1.17% and 19.11% respectively, while that of “Zhe-Mix” and Zhe-Fu-802 decreased by 25.7% 9.84%. Therefore, planting anti-sense white-backed planthopper rice materials can effectively inhibit the occurrence of white-backed planthopper, and can also ensure the yield loss of rice.