Vol. 3 (1) : January-February 2012 issue
Green Farming Vol. 3 (1) : 10-14 (January-February, 2012)
Study of per se performance and heterosis for yield and yield contributing characters in diploid cotton hybrids developed through GMS system
SEKHAR BABU GEDDAM1 and B.M. KHADI2
Department of Genetics and Plant Breeding, College of Agriculture, Dharwad University of Agricultural sciences, Dharwad - 580 005 (Karnataka)
Designation : 1Ph.D. Scholar *(sekharbabug.iari@gmail.com), 2Dean
Subject : Crop Genetics and Plant Breeding
Paper No. :
Total Pages : 5
Received : 15 November 2011
Revised accepted : 22 January 2012
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Citation :
SEKHAR BABU GEDDAM and B.M. KHADI. 2012. Study of per se performance and heterosis for yield and yield contributing characters in diploid cotton hybrids developed through GMS system. Green Farming Vol. 3 (1) : 10-14 ; January-February, 2012
ABSTRACT
Per se performance and the extent of heterosis was studied in nine diploid cotton hybrids developed through GMS system which includes five inter specific and four intra specific hybrids. The study indicated that sufficient amount of genetic variability is present among the parents and hybrids which were evaluated for the seed cotton yield and its component characters. Based on the estimates of the per se performance the cross MSD 7 nor x RAhs-14 was found to be superior over the parents as well as the checks for all the traits. Most of the hybrids showed significant levels of heterosis for seed cotton
yield. The high amount of heterosis for seed cotton yield is attributable to the higher amount of heterosis for its contributing traits. The interspecific cross MSD 7 nor x RAhs-14 found promising for the yield traits followed by other interspecific cross MSD 7 nor x Jayadhar.
Key words :
Cotton, genetic male sterility, Gossypium spp., heterosis, interspecific crosses, per se performance.
