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采用培养皿法对营养生长期和开花期的9个水稻栽培种(Pusa Sugandh-2,Pusa Basmati-1,Pusa-2511,Pusa Basmati-370,Pusa-1077,KarnalLocal,PRR-78,Jaya,Pusa-1238)和1个组培种(Culture No.34)的正己烷提取物进行了生测,以调查它们对稻螟赤眼蜂Trichogramma japonicum Ashmead和赤眼卵蜂Trichogramma chilonis(Ishii)平均寄生活性指数(PAI)和平均寄生百分率的影响。将不同水稻品种的正己烷提取物进行气相-液相色谱,来测定饱和碳氢化合物。其中,营养生长期的Pusa Sugandh-2叶片提取物激发两种寄生蜂产生最大的反应,平均寄生率最大。而开花期的Pusa Basmati-1使两种寄生蜂的平均寄生率最高。对营养生长阶段的叶片提取物进行的气相-液相色谱分析表明:Pusa Sugandh-2含有25个碳原子(C25)和29个碳原子(C29)的2种化合物。对开花期的叶片提取物进行的气相-液相色谱分析也表明:Basmati-1含有25个碳原子(C25)、26个碳原子(C26)和29个碳原子(C29)的3种化合物,可激发寄生蜂产生最大的反应。
Nine rice cultivars (Pusa Sugandh-2, Pusa Basmati-1, Pusa-2511, Pusa Basmati-370, Pusa-1077, KarnalLocal, PRR-78, Jaya, Pusa -1238) and one n-hexane extract of Culture No.34 to investigate the average parasitism of Trichogramma japonicum Ashmead and Trichogramma chilonis (Ishii) Index (PAI) and the average percentage of parasitic effects. Hexane extracts of different rice varieties were subjected to gas-liquid chromatography to determine saturated hydrocarbons. Among them, vegetative growth of Pusa Sugandh-2 leaf extract excited two parasites produced the greatest response, the average parasitic rate of the largest. While the flowering Pusa Basmati-1 maximizes the average parasitism of both parasitoids. Gas phase-liquid chromatography analysis of leaf extracts from vegetative growth stages showed that Pusa Sugandh-2 contains two compounds of 25 carbon atoms (C25) and 29 carbon atoms (C29). Gas phase-liquid chromatography analysis of the leaf extract at flowering stage also showed that Basmati-1 contains three compounds of 25 carbon atoms (C25), 26 carbon atoms (C26) and 29 carbon atoms (C29) Parasites can be stimulated to produce the greatest response.