Variability and Association Studies in Tomato Germplasm under High-Temperature Arid Region
DOI:
https://doi.org/10.24154/jhs.v7i2.374Keywords:
Tomato, Arid Environment, Germplasm, VariabilityAbstract
Genetic variability and correlation studies were carried out for 12 traits in 23 genotypes of tomato grown during spring-summer of 2009 under hot, arid agro-climatic conditions. Genetic variability, heritability and expected genetic advance revealed significant differences for all the traits studied. PCV and GCV were high for fruit weight, number of fruits per plant, plant height and fruit yield per plant. High heritability with high genetic advance as percentage of mean was observed for yield per plant (93.2%) as also for average fruit weight (92.8%), number of fruits per plant (73.4%) and plant height (50.1%) indicating the role of additive gene effects and for effectiveness of selecting for these traits. Correlation studies revealed that fruit yield had significant positive correlation with fruit weight, fruit length, fruit diameter and number of fruits per plant, both at the genotypic and phenotypic levels, indicating mutual association of these traits. Negative correlation of days to flowering and days to first harvest on yield per plant suggested indirect selection for earliness for yield improvement.
References
Ara, A., Raj, N., Nazeer, A. and Khan, S.H. 2009. Genetic variability and and selection parameters for yield and quality attributes in tomato. Indian J. Hort., 66: 30-35
Burton, G.V. and de Vane, E.H. 1953. Estimating heritability in tall fescue (Festuca arundinacea L.) from replicated clonal material. Agron. J., 45:478-481
FAO. 2007. FAOSTAT Database. Food and Agriculture Organization, Rome, Italy
Gomez, K.A. and Gomez, A.A. 1984. Statistical procedures for agricultural research. 2nd Edn., John Wiley and Sons, New York, USA
Miller, P., Lanier, W. and Brandt, S. 2001. Using Growing Degree Days to Predict Plant Stages. Ag/Extension Communications Coordinator, Communications Services, Montana State University-Bozeman, Bozeman, MO, USA
Mariame, F., Ravishankar, H. and Dessalegne, L. 2003. Study on variability in tomato germplasm under conditions of Central Ethiopia. Veg. Crops Res. Bulletin, 58:41-50
Mohanty, B.K. 2002. Studies on variability, heritability, interrelationship and path analysis in tomato. Ann. Agril. Res., 2:65-69
Phookan, D.B., Talukdar, P., Shadeque, A. and Chakravarty, B.K. 1998. Genetic variability and heritability in tomato (Lycopersicon esculentum) genotypes during summer season under plastic-house condition. Indian J. Agril. Sci., 68:304-306
Singh, P., Singh, S., Cheema, D.S. and Dhaliwal, M.S. 2002. Genetic variability and correlation study of some heat tolerant tomato genotypes. Veg. Sci., 29:68-70
Saeed, A., Hayat, K., Khan, A.A. and Iqbal, S. 2007. Heat tolerance studies in tomato (Lycopersicon esculantum Maill.). Intl. J. Agril. Biol., 9:649- 652
Samadia, D.K., Aswani, R.C. and Dhandar, D.G. 2006. Genetic analysis for yield components in t o m a t o landraces. Haryana J. Hortl. Sci., 35:116-119
Satesh, K., Sharma, J.P., Singh, A.K., Tiwari, S.P. and Neerja, S. 2007. Harvest index, quality and morphometrical evaluation for identification of superior types in tomato. Environ. Ecol., 25:399-402
Sharma, J.P., Singh, A.K., Satesh, K. and Sanjeev, K. 2009. Identification of traits for ideotypeselection in tomato. Mysore J. Agril. Sci., 43:222-226
Singh, A.K. 2005. Genetic variability, correlation and path co-efficient studies in tomato under cold arid region of Ladakh. Prog. Hort., 37:437-443
Vavilov, N.I. 1951. The origin, variation, immunity and breeding of cultivated plants. Soil Sci., 72:483-482
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Copyright (c) 2012 Hanif Khan, D K Samadia (Author)
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