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Indian Journal of Pure & Applied Biosciences (IJPAB)
Year : 2014 , Volume 2, Issue 1
Page No. : 106-111
Article doi: : http://dx.doi.org/10.18782

Heterosis for Grain yield and its Component traits in Maize (Zea mays L.)

G. Praveen Kumar^1*, Y. Prashanth¹, V. Narsimha Reddy², S. Sudheer Kumar³ and P. Venkateshwara Rao⁴

¹Department of Genetics and Plant Breeding, College of Agriculture, Rajendranagar, Hyderabad-30
²Principal Scientist (Plant Breeding), Maize Research Centre (MRC), A.R.I, R.nagar, Hyderabad-30
³Professor, Department of Genetics and Plant Breeding, College of Agriculture, Rajendranagar, Hyderabad-30
⁴Professor, Department of plant physiology, College of Agriculture, Rajendranagar, Hyderabad-30
^*Corresponding Author E-mail: gaini.praveenbr@gmail.com

ABSTRACT

Heterosis was estimated in 60 hybrids obtained by crossing 20 inbred lines with three testers using
line × tester mating design in maize. Sixty hybrids along with 23 parents and three standard
checks were evaluated for twelve characters during rabi, 2012-13. All the 60 hybrids showed
earliness for days to 50 percent tasseling and days to 50 percent silking over mid parent and 39 hybrids
showed earliness over standard checks for days to maturity. The hybrid MRC 13 × BML 14 recorded
positive significant heterosis over three standard checks DHM 117, 900M Gold and NK 6240 for grain
yield (14.67 %, 12.94 % and 11.89 %, respectively). Over standard check NK 6240, it showed desirable
significant heterosis for grain yield per plant, number of kernels per row, number of kernel rows per ear
and ear length.
Keywords: Heterosis, Hybrids, Maize, Grain.

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

Cite this article:

Int. J. Pure App. Biosci. 2 (1): 106-111 (2014)

No. 772, Basant Vihar, Kota

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