Author(s):

Chhavikant, KS Nirania, Ankit Kumar and SR Pundir

Abstract:
The present study analysed 40 Gossypium hirsutum hybrids, developed on five female parents (testers) using eight male parents (lines), in line x tester analysis along with one standard check (HHH 223) to estimate economic heterosis with the objective of exploring their commercial utilization. The experimental material was grown at CCS Haryana Agricultural University, Cotton Research Station Sirsa, during Kharif 2015-16 in a randomized block design with three replications. Observations were recorded for nine characters viz., plant height, number of monopods, number of sympods, number of bolls, boll weight, ginning out turn, seed index, lint index and seed cotton yield per plant. The economic heterosis was calculated over standard check HHH 223. Maximum heterosis showing cross combinations for seed cotton yield, boll number, boll weight, plant height, number of monopods, number of sympods, ginning out turn, seed index and lint index were H1236 x LH 1960 (69.09%), H1300 x P 729-37 (69.05%), H1300 x LH 1960 (15.82%), H1098i x RST 9 (9.63%), H1300 x Mahalaxmi (65.15%), H1098i x RST 9 (60.40%), H1300 x LH 1960 (18.91%), H1300 x LH 1960 (18.91%) and H1300 x RST 9 (22.59 %) respectively.Where ever cross combinations involving either H1098i or H1117 as female parent recorded significant positive heterosis for most of the yield contributing characters. Thus the female parents H1098i and H1117 can be used within breeding programmes aimed for heterosis breeding after proper evaluation within multi-location trials.

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