| 宋丽雯，张君霞，杨顺义，沈慧敏*.截形叶螨抗哒螨灵种群抗性遗传方式的研究[J].植物保护,2016,42(1):112-115. |
| 截形叶螨抗哒螨灵种群抗性遗传方式的研究 |
| Resistance inheritance patterns to pyridaben in Tetranychus truncatus |
| 投稿时间：2014-12-26 修订日期：2015-03-24 |
| DOI： |
| 中文关键词: 截形叶螨 哒螨灵 抗性 遗传方式 |
| 英文关键词:Tetranychus truncates pyridaben resistance inheritance patterns |
| 基金项目:公益性行业(农业)科研专项(201103020); 国家自然科学基金(31260442); 甘肃省科技计划项目(1308RJYA053); 盛彤笙科技创新基金(GSAU-STS-1518) |
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| 中文摘要: |
| 通过对室内选育出的截形叶螨敏感品系和抗哒螨灵品系的杂交和回交试验表明:所测得的截形叶螨正交F1SR (SS♀×RR♂)和反交F1RS (RR♀×SS♂)代的显性度 DSR和DRS分别为0.40和0.60,表明抗性由不完全显性基因控制; 两个D值(DRS和DSR) 95%置信限有重叠,并且经t检验,两个D值不存在显著差异(P>0.05),证明截形叶螨对哒螨灵的抗性遗传为常染色体控制; 回交F2代(BC1RS和BC1SR)的实际死亡率和期望值经χ2检验,无显著性差异(χ2=9.72,df=9,P>0.05),表明抗性遗传由单基因控制。 |
| 英文摘要: |
| Cross and backcross between the pyridaben-resistant strain (Py-R) and susceptible strain (SS) were used to explore the inheritance pattern of Tetranychus truncatus Ehara to pyridaben. The estimated degrees of dominance (D)for the F1 females from SS♀×RR♂ crosses and RR♀×SS♂ crosses were 0.40 and 0.60, respectively, illustrating an incompletely dominant inheritance of resistance. The 95% confidence limit of the two degrees of dominance was superposed, showing no significant difference between DSR and DRS. It revealed that the resistance inheritance was not maternal inheritance. The chi-square (χ2)goodness-of-fit analysis indicated that the mortalities observed in F2 females (F1SR♀×SS♂ and F1RS♀×RR♂) were not significantly different (χ2=9.72, df= 9, P> 0.05)from the expected values. It indicated that the resistance was consistent with single-gene inheritance model. |
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