Abstract

                                The results on neppiness and stickiness of cotton fibres in two groups f... 28 intra- hirsutum L. and 35 interspecific (G. hirsutum L. x G. barbadense L.) hybrids have been reported. Neps are small entangled cluster of fibres and one of the major causes for neppinss was high in G. barbadense parents compared to G. hirsutum lines. It was very high in interspecific hybrids than the intra-hirsutum hybrids. Seventeen intra-hirsutum and 18 interspecific crosses exhibited a desirable negative seu effect for this trait. Few hybrids displayed negative heterosis in both groups. The parents and hybrids of the both groups showed either a little or no stickiness in their fibres.

Key words : Neppiness, stickiness of fibres, heterosis, intra- hirsutum. Gossypium barbadense