Pink bollworm (PBW, Pectinophora gossypiella Saund.) is a pest of economic importance in cotton producing countries. Earlier results of host-plant resistance to the PBW indicated races of Gossypium hirsutum L. and some wild species including Gossypium thurberi Tod. which are resistant to PBW. Hence prebreeding
efforts were made to transfer PBW resistance from G. thurberi to G. arborum. F1, F2 and BC1 populations along with parents were studied for morphological, boll anatomical characters and infestation by PBW larvae.

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