GENETIC VARIABILITY AND HERITABILITY STUDIES OF MAIZE IN MON DISTRICT NAGALAND INDIA

M.S. SACHAN¹*, M. CHAKRUNO^2
1ICAR-Krishi Vigyan Kendra, Mon, Aboi, 798 603, Nagaland, India
²ICAR-Krishi Vigyan Kendra, Mon, Aboi, 798 603, Nagaland, India
* Corresponding Author : sachankvkmon@gmail.com

Received : 15-04-2020     Accepted : 22-04-2020     Published : 30-04-2020
Volume : 12     Issue : 4       Pages : 728 - 730
Genetics 12.4 (2020):728-730

Keywords : Maize, Variability, Heritability, Genetic Advance, Yield
Academic Editor : Suleyman Cylek
Conflict of Interest : None declared
Acknowledgements/Funding : The authors are greatly thankful to Director of ICAR- ATARI, Umiam, Meghalaya and Head KVK Mon Nagaland for encouraging and providing official support during the study
Author Contribution : All authors equally contributed

Eight numbers of local land races of maize germplasm were collected from different part of Mon district Nagaland and evaluated to identify their varietal performance, periodical sowing time and genetic variability for seventeen quantitative traits under the agro morphological purview at the Instructional Farm, Krishi Vigyan Kendra, Mon (Aboi), Nagaland under upland farming conditions during kharif season 2017. The economic characters of the genotypes MM-7 (24.64 q/ ha), showed maximum yield with late in maturity, on the other hand MM-8 (22.51 q/ ha) genotypes observed moderate yield potential with early in maturity. Highest seed yield (21.68 q/ ha) was also recorded when the crop was planted between10th April to 10th May, irrespective of all the land races and different planting time. Significant inter-genetic differences were recorded for all the characters. The highest estimates of genotypic (GCV) and phenotypic (PCV) coefficients of variation were observed in case of grain yield (28.30% and 27.44%), followed by kernel thickness (23.78% and 21.10%). High heritability (%) coupled with high genetic advance was observed for grain yield (97.00 and 48.88), kernel thickness (89.00 and 42.84), plant height (88.00 and 36.95), kernels per row (87.00 and 31.50). Such high heritability followed by high genetic advance indicates that selection may be effective for improvement of such characters to increase grain yield per plant. Sowing of crop at optimum period is very important non- monetary input in obtaining higher yield. Sowing operation for maize should be also find- out during the month of April first fortnight to May first fortnight of the district.

1. Singh P. (1996) Essentials of Plant Breeding. Kalayani Publishers, New Delhi, India, 414.
2. Sachan M.S. (2015) J. of Hill Agriculture, 7(2), 269-270.
3. Sachan M.S. (2017b) J. of Hill Agriculture, 8(3), 270-273.
4. Sachan M.S. and Singh S.P. (2003) J. of Interacademicia, 7(2), 140-143.
5. Sachan M.S. (2017a) J. of Hill Agriculture, 8(1), 17- 20.
6. Sachan M.S. (2017c) J. of Hill Agriculture, 8(4), 366-371.
7. Panse V.S. and Sukhatme (1975) Statistical methods for agricultural workers. ICAR, New Delhi, 330.
8. Hanson C.H., Robinson H.F. and Comstock R.E. (1956) Agronomy Journal, 48, 268- 272.
9. Johnoson H.F., Robinson H.F. and Comstock R.E. (1955) Agronomy Journal, 47(2), 314- 318.
10. Sachan M.S., Michui P. and Mezhatsu R. (2014) Extension bulletin No 1, KVK, Mon (Aboi), Nagaland, 56.
11. Reddy V.R. and Jabeen F. (2016) SABRAO Journal of Breeding and Genetics, 48(2), 120-126.
12. Singh A.K., Mishra S.P. and Parihar R. (2018) Int. J. Curr. Microbiol. App. Sci., 7(9), 1261- 1266.
13. Bekele T. A. and Rao N. (2014) Journal of Plant Sciences, 2 (1), 1-4.
14. Mustafa H.S.B., Aslam M., Hasan E., Hussain F. and Farooq J. (2014) The Journal of Agricultural Sciences, 9, 37-43.
15. Nataraj V., Shah J.P. and Vandana D. (2014) International Journal of Applied Biology and Pharmaceutical Biology, 5 (1), 205-208.
16. Hepziba S.J., Geetha K. and Ibrahim S.M. (2013) Electronic Journal of Plant Breeding, 4(1), 1067-1072.