Vol. 8 (4) : July-August 2017 issue
Green Farming Vol. 8 (4) : 772-777 ; July-August, 2017
Studies on heterosis for yield and yield components traits in intra hirsutum hybrids of cotton (Gossypium hirsutum L.)
LINGARAJA L.1*, R.S. SANGWAN2, SOMVEER NIMBAL3 and OMENDER SANGWAN4
Department of Genetics and Plant Breeding, Chaudhary Charan Singh Haryana Agricultural University, Hisar - 125 004 (Haryana)
1Ph.D. Res. Scholar *(email@example.com), 2Principal Scientist, 3,4Assistant Scientist
Subject : Crop Genetics and Plant Breeding
Paper No. : P-6434
Total Pages : 6
Received : 05 January 2017
Revised accepted : 07 June 2017
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LINGARAJA L., R.S. SANGWAN, SOMVEER NIMBAL and OMENDER SANGWAN. 2017. Studies on heterosis for yield and yield components traits in intra hirsutum hybrids of cotton (Gossypium hirsutum L.). Green Farming Vol. 8 (4) : 772-777 ; July-August, 2017
The present study was performed to evaluate the heterosis effects for seed cotton yield and its components traits of 60 hybrids were obtained from a line x tester analysis of crosses involving fifteen female parents and four male parents along with a check hybrid HHH 223. The heterosis was observed for seed cotton yield, number of bolls, boll weight, days to first flower, number of monopods and plant height. The results showed that range of economic heterosis varied from -60.38 to 48.32% of seed cotton yield, -44.03 to 31.19% of number of bolls, -9.722 to 25% of boll weight, -18.80 to 2.29% of days to first flower, -42.30 to 53.84% of number of monopods and -24.92 to 28.40 of plant height. The overall study of heterosis revealed that the better performing hybrids, H1316 X H1236, H1442 X H1226 and H1316 X H1098-i for seed cotton yield and its components traits like number of bolls, boll weight, number of monopods. So these crosses could be exploited to improve the yield along with one or more yield contributing traits through heterosis breeding.
Key words :
Cotton, Economic heterosis, Line x tester analysis, Yield attributes.