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International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 5
First page : (241) Last page : (248)
Article doi: http://dx.doi.org/10.18782/2320-7051.5244

Heterosis for Grain Yield and Quality Traits in Maize (Zea mays L.)

Preeti Sharma*, M. C. Kamboj, Narender Singh and Mehar Chand
CCS Haryana Agricultural University, Regional Research Station, Karnal- 132001, India
*Corresponding Author E-mail: sharmapreeti.genetics@gmail.com

Received: 18.07.2017  |  Revised: 29.07.2017   |  Accepted: 30.07.2017  


Heterosis was estimated in 63 experimental hybrids obtained by crossing 9 productive inbred lines and 7 QPM (Quality protein miaze) inbred lines using line × tester mating design in maize. Sixty three hybrids along with 16 parents and two standard checks were evaluated for seventeen characters during Kharif 2014.Heterosis studies indicated the expression of standard heterosis and heterobeltiosis in several crosses for most of the characters in both desirable and undesirable direction. Over standard check, experimental hybrid HKI 1128 x HKI 163 manifested high heterotic effect for grain yield and other traits i.e plant height, ear height, number of cobs per plant, number of grains per cob over check 2 i.e HM 5 and for 100 grain weight over check 1 i.e HQPM 1, whereas, HKI 659-3 x HKI 194-6 showed highest standard heterosis for number of grains per cob, 100 grain weight and grain yield per plant indicating such experimental hybrids may be used for early maturing hybrids with high grain yield. The experimental hybrid HKI 1126 x HKI 161was found to exploit highest standard heterosis for phonological traits i.e days to 50 % taselling, days to 50 % silking, days to maturity (over HQPM 1) and grain yield per plant (over HM 5). HKI 488 x HKI 170(1+2) and HKI 659-3 x HKI 193-2 menifested high heterosis for both lysine and tryptophan content over HQPM 1as well as for protein content (over HM 5) and HKI 1040-4 x HKI 163 showed high heterosis for lysine content, tryptophan content and 100 grain weight over HQPM 1 as well as for number of grains per cob and grain yield per plant suggesting that these experimental hybrids can be used in QPM hybrid breeding programmes.

Key words: Heterosis, Hybrids, Inbred, QPM

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Sharma, P., Kamboj, M.C., Singh, N. and Chand, M., Heterosis for Grain Yield and Quality Traits in Maize (Zea mays L.), Int. J. Pure App. Biosci.5(5): 241-248 (2017). doi: http://dx.doi.org/10.18782/2320-7051.5244