Vol. 9 (2) : March-April 2018 issue
Green Farming Vol. 9 (2) : 206-211 ; March-April, 2018
Combining ability and pooled score studies on baby corn traits in maize (Zea mays L.)
LASYA BHAT1* and S.K. DESHPANDE2
Deptt. of Genetics & Plant Breeding, College of Agriculture, Univ. of Agric. Sciences, Dharwad - 580 005 (Karnataka)
Designation : 1P.G. Student *(lasyabhat8181@gmail.com), 2Professor & Head
Subject : Crop Genetics and Plant Breeding
Paper No. : P-6885
Total Pages : 6
Received : 02 August 2017
Revised accepted : 20 March 2018
Get Access
Citation :
LASYA BHAT and S.K. DESHPANDE. 2018. Combining ability and pooled score studies on baby corn traits in maize (Zea mays L.). Green Farming Vol. 9 (2) : 206-211 ; March-April, 2018
ABSTRACT
Combining ability estimates and pooled scores of gca would be useful in identification of best general combiners and best heterotic combinations across the traits of interest and thus such lines may be used in development of single, double and three way cross hybrids or may be pooled to derive superior inbreds. In this direction, the present investigation on assessment of combining abilities for the baby corn features was engaged at College of Agriculture, Dharwad, during summer and kharif of 2015. The breeding material comprised of eleven lines and five testers crossed in a line x tester fashion during summer-15 and thus fifty five test cross hybrids as well as two checks (HM4 and HQPM-1). Altogether seventy three entries were evaluated for combining ability effects during kharif-15 by following principles of RBD and with two replications. Data on baby corn traits were collected from each entry and mean values were considered for estimation of combining abilities according to line x tester method using WINDOSTAT v8.1 software and drawn following conclusions. Among lines, HKI-163 and PDM-112-2 were found to be excellent combiners for baby corn yield and yield related traits of economic importance. Among testers, best general combiners were, BLSB-5 and NK 6240 M-2. Out of 55 hybrids, PDM-112-2 x BLSB-5 was the best combination. Therefore, we recommend the lines HKI-163, PDM-112-2, BLSB-5 and NK6240M-2 for use in improvement and development of baby corn hybrids or to derive synthetic population or to develop new inbred for baby corn parameters.
Key words :
Baby corn, Combining ability, Pooled weighted gca, SCA effetcs, Yield attributes, Zea mays.