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<p>Pod borers are the major constraints in realizing the potential yield of chickpea, understanding their composition and associated natural enemies paves the way for development of management practices. In this regard, fixed plot survey was undertaken in chickpea fields of Delhi National Capital Region. The collected pod borers and the associated natural enemies were morphologically identified. Five species of pod borers were found feeding on chickpea, which included gram pod borer, <i>Helicoverpa armigera</i> (Hubner), beet armyworm, <i>Spodoptera exigua</i> (Hubner) and three different species of semiloopers viz., <i>Autographa nigrisigna</i> (Walker), <i>Thysanoplusia orichalcea</i> (Fabricius) and <i>Chyrsodeixis chalcites</i> (Esper). Natural parasitisation by a hymenopteran endolarval parasitoid, <i>Campoletis chlorideae</i> Uchida (on <i>H. armigera</i>,<i> S. exigua</i>, <i>A. nigrisigna</i>) and a dipteran larval-pupal parasitoid, <i>Senometopia illota</i> Curran (on <i>H. armigera</i>) was also recorded. Molecular characterization was carried out for the major semilooper, <i>A. nigrisigna</i>, and also for the parasitoids, <i>C. chlorideae</i> and <i>S. illota</i>. Relative abundance of pod borers and per cent parasitisation by parasitoids were also recorded. <i>H. armigera</i> was the major pod borer infesting chickpea accounting for 65–89% during pod formation to maturity stage in all the three locations surveyed. During vegetative stage, <i>S. exigua</i> was the major pest with 75 per cent abundance in one of the locations surveyed. The parasitisation by <i>C. chlorideae</i> on the pod borers was in the range of 9.79–11.68%, while the parasitisation by <i>S. illota</i> on <i>H. armigera</i> accounted for 5.19 per cent. Accurate identification of the pod borer complex of chickpea in the National Capital Region and the documentation of the associated natural enemies will facilitate informed decision making for the sustainable pest management.</p>

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Morphological and molecular identification of pod borer complex infesting chickpea and their associated natural enemies

  • 期刊论文

  • 发表日期：

    2026年1月14日

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  • Doddachowdappa Sagar,
  • Suresh Mahadev Nebapure,
  • Ramya Ramesan Syamala,
  • Rahul Kumar Chandel,
  • Pathour Rajendra Shashank

摘要

Pod borers are the major constraints in realizing the potential yield of chickpea, understanding their composition and associated natural enemies paves the way for development of management practices. In this regard, fixed plot survey was undertaken in chickpea fields of Delhi National Capital Region. The collected pod borers and the associated natural enemies were morphologically identified. Five species of pod borers were found feeding on chickpea, which included gram pod borer, Helicoverpa armigera (Hubner), beet armyworm, Spodoptera exigua (Hubner) and three different species of semiloopers viz., Autographa nigrisigna (Walker), Thysanoplusia orichalcea (Fabricius) and Chyrsodeixis chalcites (Esper). Natural parasitisation by a hymenopteran endolarval parasitoid, Campoletis chlorideae Uchida (on H. armigera, S. exigua, A. nigrisigna) and a dipteran larval-pupal parasitoid, Senometopia illota Curran (on H. armigera) was also recorded. Molecular characterization was carried out for the major semilooper, A. nigrisigna, and also for the parasitoids, C. chlorideae and S. illota. Relative abundance of pod borers and per cent parasitisation by parasitoids were also recorded. H. armigera was the major pod borer infesting chickpea accounting for 65–89% during pod formation to maturity stage in all the three locations surveyed. During vegetative stage, S. exigua was the major pest with 75 per cent abundance in one of the locations surveyed. The parasitisation by C. chlorideae on the pod borers was in the range of 9.79–11.68%, while the parasitisation by S. illota on H. armigera accounted for 5.19 per cent. Accurate identification of the pod borer complex of chickpea in the National Capital Region and the documentation of the associated natural enemies will facilitate informed decision making for the sustainable pest management.