Agricultural Research Station, Dharwad Farm, Dharwad 580 007.
1Present address: Central Institute of Cotton Research, P. B. # 2, Shankar Nagar, Nagpur 440 010.
F2 of cotton hybrid DCH-32 was forwarded to F3 as a bulk by taking 10 seeds per plant; similarly two seeds from each F3 plants were taken to constitute F4 generation. Selection in F4 generation was carriedout. Measurement of halo length was used as base for selection of plants. As many as 184 plants were selected. On detail investigation of fibre traits, plants with >23 g/tex fibre strength, 30 mm fibre length (2.5% SL) and around 4 micronnaire value have been isolated. Selected platns were tested in F5 generation in plant to row progeny, plants with higher fibre strength (>23 g/tex) have been recovered; however micronaire of these platns was around 2.8. Finally the selected plants tested in F6 have been recorded for seed cotton yield, ginning outturn and fibre properties. Desirable plants having higher seed cotton yield than DS-28 (38 g/plant) with high fibre strength (>23 gltex) have been recovered, however, the micronaire of these plants is around 2.8.
Cotton, fibre quality, interspecific hybridization, introgression
