Agronomic performance and genotypic diversity for morphological traits among early maize genotypes

Bhim Nath Adhikari, Jiban Shrestha, Bishal Dhakal, Bishnu Prasad Joshi, Naba Raj Bhatta


Detailed information on the genetic diversity between maize germplasm (Zea mays L.) is useful for their systematic and efficient use in breeding programs. Fourteen early maize genotypes were studied to assess their performance and genotypic diversity at Doti, Nepal in 2015. Days to tasseling, days to silking, plant height, ear height, ear length, ear diameter and grain yield were significant among genotypes. Genotype SO3TEY-PO-BM, COMPOL-NIOBP and ACROSS-99402 were found higher yielder with earlier maturity. Days to tasseling (0.85), days to silking (0.82), plant height (0.79), ear length (0.71) and ear diameter (0.66) were found highly heritable traits. Grain yield (0.39) and ear height (0.47) medium and remaining traits showed low heritability. High PCV was observed for grain yield (35.10%), number of plants/plot (34.46%), tesseling silking interval (26.85%), harvested ears/plot (24.45%) and husk cover rating (22.85%) where other traits showed medium to low PCV. Grain yield showed high GCV (21.96%), ear height and husk cover had medium and remaining traits showed low GCV (<10%). Plant height (r₌0.498), harvested plants/plot (r₌0.412), harvested ear/plot (r₌0.762), ear length (r₌0.472) and ear diameter (r₌0.470) showed significant positive correlation with grain yield. The yield can be improved if selection applied in favor of those yield components.

Full Text:



Adhikari, B.N., Pokhrel, B.B. & Shrestha, J. 2018. Evaluation and development of Fingermillet (Eleusine coracana L.) genotypes for cultivation in high hills of Nepal. Fmg. & Mngmt., 3(1): 37-46.

Aditya, J.P. & Bhartiya, A. 2013. Genetic variability, correlation and path analysis for quantitative characters in rainfed upland rice of Uttarakhand hills. Journal of Rice Research, 6(2): 24-34.

Allard, R.W. 1960. Principles of Plant Breeding. 1st Edn., John Wiley and Sons Inc., New York.

Bhusal, T., Lal, G.M., Marker, S. & Synrem, G.J. 2017. Genetic variability and traits association in maize (Zea mays L.) genotypes. Annals of Plants and Soil Research, 19(1): 59-65.

Bisen, N., Rahangdale, C.P. & Sahu, R.P. 2018. Genetic variability and correlation studies of yield and yield component in maize hybrids (Zea mays L.) under Kymore Plateau and Satpura hill region of Madhya Pradesh. International Journal of Agriculture, Environment and Biotechnology, 11(1): 71-77. DOI: 10.30954/0974-1712.2018.00178.9

Carangal, V.R., Ali, S.M., Koble, A.F., Rinke, E.H. & Sentz, J.C. 1971. Comparison of S1 with testcross evaluation for recurrent selection in maize. Crop Science, 11: 658-661.

Falconer, D.S. 1964. Introduction to Quantitative Genetics. Oliver and Boyd LTD, Welbeck Street, London.

Girma, B.T., Kitil, M.A., Banje, D.G., Biru, H.M. & Serbessa, T.B. 2018. Genetic variability study of yield and yield related traits in rice (Oryza sativa L.) genotypes. Adv. Crop. Sci. Tech., 6 (4): 381. DOI:10.4172/2329-8863.1000381

Johnson, H.N., Robinson, H.F. & Comstock, R.E. 1955. Estimate of genetic and environmental variability in Soybean. Agronomy Journal, 27: 314-318.

Kandel, M., Ghimire, S. K., Ojha, B. R. & Shrestha, J. 2018. Correlation and path analysis for grain yield and its attributing traits of maize inbred lines (Zea mays L.) under heat stress condition. International Journal of Agriculture, Environment and Food Sciences, 2(4): 124-130.

Katuwal, R.B., Chaudhary, R.N., Yadav, J.K., Yadav, M., Yadav, D., Yadav, B. & Niraula, B. 2017. Performance evaluation of early, full season and quality protein maize varieties in the eastern hills of Nepal. In: Giri Y.P, Mahato, B.N., Gautam, A.K., Khatiwoda, S.P., Shrestha, R., Joshi, B.K., Khatri, B.B., Rai, S.K., Ghimire, Y.N., Luitel, B.P., Upreti, H.K., Sah, K, Sharma, P.N., Bajracharya, A.S.R., Baidhya, S., Shrestha, J. & Manandhar, S. (Eds). Proceedigs of the 28th Summer Crops Workshop 17-18 March 2015, National Rice Research Program, Hardinath, Dhanusha, Nepal Agricultural Research Council, 284-295.

Khan, M.H., Ahmad, M., Hussain,M. Hassan-ul, M. & Ali, Q. 2108. Heritability and trait association studies in Maize F1 hybrids. International Journal of Biosciences, 12(1): 18-26.

Khush, G.S. 2013. Strategies for increasing the yield potential of cereals: Case of rice as an example. Plant Breeding, 132: 433-436. DOI:10.1111/pbr.1991

Kothari, C.R. 2004. Research Methodology, Methods and Techniques. 2nd Edn., New Age International Publishers, India.

MOAD. 2017. Statistical Information on Nepalese Agriculture 2072/73 (2015/16). Government of Nepal. Ministry of Agricultural Development. Monitoring, Evaluation and Statistics Division. Agri-Statistics Section Singhadurbar, Kathmandu Nepal.

Ogunniyan, D.J. & Olakojo, S.A. 2014. Genetic variation, heritability, genetic advance and agronomic character association of yellow elite inbred lines of maize (Zea mays L.). Nigerian Journal of Genetics, 28: 24-28.

Pahadi, P. & Sapkota, M. 2016. Variability, correlation and path coefficient analysis in maize (Zea mays L.) genotypes in Baitadi, Nepal. Int. J. Exp. Res. Rev., 6: 25-34.

Pal, S., Sharma, H.R., Rai, A.K. & Bhardwaj, R.K. 2016. Genetic variability, heritability and genetic gain for yield and quality traits in Cucumber (Cucumis sativus L.) genotypes. The Bioscan, 11(3): 1985-1990.

Prasai, H.K., Kushwaha, U.K.S., Joshi, B.P., & Shrestha, J. 2015. Performance evaluation of early maize genotypes in far western hills of Nepal. Journal of Maize Research and Development, 1(1): 106-111.

RARS. 2015. Annual Report 2071/72 (2014/15). Government of Nepal. Nepal Agricultural Research Council. Regional Agricultural Research Station (RARS). Bhagetada, Dipayal, Doti.

Sharma, B.K., Sharma, S., Kandel, B.P. & Shrestha, J. 2018. Varietal evaluation of promising maize genotypes. Azarian J. Agric. 5(4): 120-124.

Shrestha, J. (2014). Morphological variation in maize inbred lines. International Journal of Environment, 3(2): 98-107.

Shrestha, J., Yadav, D.N., Amgain, L.P. & Sharma, J. P. (2018). Effects of nitrogen and plant density on maize (Zea mays L.) phenology and grain yield. Current Agriculture Research Journal, 6(2): 175-182.

Shukla S., Bhargava, A., Chatterjee, A., Srivastava, A. & Singh, S.P. 2006. Genotypic variability in vegetable Amaranth (Amaranthus tricolor L.) for foliage and its contributing traits over successive cuttings and years. Euphytica, 151: 103-110. DOI: 10.1007/s10681-006-9134-3

Sivasubramanian, S. & Madhavamenon, P. 1973. Combing Ability in Rice. Madras Agricultural Journal, 60: 419-421.

Sumanth V., Suresh, B.G., Ram, B.J. & Srujana, G. 2017. Estimation of Genetic Variability, Heritability and Genetic Advance for Grain Yield Components in Rice (Oryza sativa L.). Journal of Pharmacognosy and Phytochemistry, 6: 1437-1439.

Vashistha, A., Dixit, N. N., Dipika, Sharma, S. K. & Marker, S. 2013. Studies on Heritability and Genetic Advance Estimates in Maize Genotypes. Bioscience Discovery, 4: 165-168.



  • There are currently no refbacks.


International Journal of Applied Biology, p-ISSN : 2580-2410 e-ISSN : 2580-2119 is licensed under a Creative Commons Attribution 4.0 International License. Preserved in LOCKSS, based at Stanford University Libraries, United Kingdom, through PKP Private LOCKSS Network program.


International Journal of Applied Biology has been indexed by :