CAJ | 학술논문

采用苗期鉴定、蜜露量测定及成株期田间抗性测定的方法对几个水稻新品种(组合)进行褐飞虱的抗性评价.苗期鉴定结果表明,只有R339(Bph14+ Bph15)表现为中抗,其他品种均表现为感虫.蜜露量测定结果表明,各待测水稻品种(组合)的抗性随着苗龄增大而逐渐增强,但抗性增强程度因品种而异.R339(Bph14+ Bph15)和R838(Bph14+ Bph15)从30 d苗龄始抗性表现与RHT差异不显著;R339(Bph15)、良丰优339(Bph14+ Bph15)和良丰优838(Bph14+ Bph15)从40 d苗龄始抗性表现与RHT差异不显著;R339(Bph14)和良丰优339(Bph15)从60d苗龄始抗性表现与RHT差异不显著;良丰优339(Bph14)从70 d苗龄始抗性表现与RHT差异不显著.成株期田间抗性评价结果表明,在田间褐飞虱虫口密度增大时,恢复系R339(Bph15)、R339(Bph14+Bph15)、R838(Bph14+ Bph15)及组合良丰优339(Bph14)、良丰优339(Bph15)、良丰优339(Bph14+ Bph15)、良丰优838(Bph14+Bph15)的虫口密度显著低于4个未含抗虫基因的品种(组合),说明导入抗虫基因后的水稻品种(组合)在田间显著影响了褐飞虱种群增长,田间抗性明显.水稻恢复系R339(Bph15)、R339(Bph14+ Bph15)、R838(Bph14+ Bph15)和组合良丰优339 (Bph14)、良丰优339(Bph15)、良丰优339(Bph14+ Bph15)、良丰优838(Bph14+ Bph15)在广西生产上很有应用价值.
채용묘기감정、밀로량측정급성주기전간항성측정적방법대궤개수도신품충(조합)진행갈비슬적항성평개.묘기감정결과표명,지유R339(Bph14+ Bph15)표현위중항,기타품충균표현위감충.밀로량측정결과표명,각대측수도품충(조합)적항성수착묘령증대이축점증강,단항성증강정도인품충이이.R339(Bph14+ Bph15)화R838(Bph14+ Bph15)종30 d묘령시항성표현여RHT차이불현저;R339(Bph15)、량봉우339(Bph14+ Bph15)화량봉우838(Bph14+ Bph15)종40 d묘령시항성표현여RHT차이불현저;R339(Bph14)화량봉우339(Bph15)종60d묘령시항성표현여RHT차이불현저;량봉우339(Bph14)종70 d묘령시항성표현여RHT차이불현저.성주기전간항성평개결과표명,재전간갈비슬충구밀도증대시,회복계R339(Bph15)、R339(Bph14+Bph15)、R838(Bph14+ Bph15)급조합량봉우339(Bph14)、량봉우339(Bph15)、량봉우339(Bph14+ Bph15)、량봉우838(Bph14+Bph15)적충구밀도현저저우4개미함항충기인적품충(조합),설명도입항충기인후적수도품충(조합)재전간현저영향료갈비슬충군증장,전간항성명현.수도회복계R339(Bph15)、R339(Bph14+ Bph15)、R838(Bph14+ Bph15)화조합량봉우339 (Bph14)、량봉우339(Bph15)、량봉우339(Bph14+ Bph15)、량봉우838(Bph14+ Bph15)재엄서생산상흔유응용개치.