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Field selection for resistance in cowpea (Vigna unguiculata (L) Walp.) to major insect pests

机译:cow豆(Vigna unguiculata(L)Walp。)对主要害虫的抗性田间选择

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摘要

Fifty five exotic and indigenous accessions of fodder cowpea (Vigna unguiculata (L.) Walp.) were evaluated for relative tolerance to flea beetles (Pagaria signata Motsch), semilooper (Plusia nigrisigna Wlk.) and grasshopper (Hieroglyphus nigrorepletus Bol.). The mean infestations of flea beetle, semilooper and grasshopper ranged from 1.13 to 21.26 per cent, 1.46 to 19.13 per cent and 2.53 to 11.46 percent respectively. Accessions JPM/2A-39, FCO9-19, CS-88, IPO4/70, HS 46-1 and H-5-3-2 were identified as multiple resistant donors and can be incorporated into the improved varieties of cowpea for resistant breeding programme.
机译:评价了55种外来和本地种的cow豆(Vigna unguiculata(L.)Walp。)对跳蚤甲虫(Pagaria signata Motsch),半loop(Plusia nigrisigna Wlk。)和蚱((Hieroglyphus nigrorepletus Bol。)的相对耐受性。跳蚤甲虫,半loop和蚱hopper的平均侵染率分别为1.13%至21.26%,1.46%至19.13%和2.53至11.46%。鉴定JPM / 2A-39,FCO9-19,CS-88,IPO4 / 70,HS 46-1和H-5-3-2为多重抗性供体,可将其掺入of豆改良品种中进行抗性育种程序。

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