Combining Ability For Fruit Worm Resistance In Some Commercially Grown Tomatoes In Lake Alau Near Maiduguri And Hong In Adamawa State, Nigeria
Keywords:
Tomato, fruit worm resistance, yield components, Helicoverpa zea BoddieAbstract
Combining ability studies for yield and yield components of tomato under artificial and deliberate infestation by tomato fruit worm (Helicoverpa zea Boddie) were made over two environments at Lake Alau near Maiduguri and at Hong Adamawa State, Nigeria in a set of 6 lines and 2 testers during the 2009 and 2010 dry season under irrigation. The pooled results showed that both General Combining Ability (GCA) and Specific Combining Ability (SCA) were influenced by the environment implying that the parents and hybrids must be evaluated over a wide range of environments to have unbiased estimate. The tester Cherry and the lines UC and Roma VF indicated great promise for the production of increased number of fruits per plant and incidentally the general fruit yield in tomato under infestation by fruit worm insect. Out of the 12 hybrids studied, 4 each were found to be good specific combiners for number of flower clusters and plant height, and 5 for number of fruits per plant over both the environment combined. Cherry × Hong Large and Cherry × Roma VF were the best specific combiners for number of fruits per plant and incidentally having high number of trichome count. These hybrids could be resistant to this insect. Additive gene action were preponderant for number of flower clusters, number of fruits per plant and days to final harvest, while non-additive action were preponderant for number of leaves per plant, plant heights, weight of fruits and the percentage damaged fruits.
References
Asati, B.S., Singh, G., Rai, N. and Chaturvedi, A.K. (2007). Heterosis and combining ability studies for yield and quality traits in tomato. Vegetable Science, 34, 92-94.
Cameron, P. J., Walker, G.P. Herman, T. J. B and Walluce, A. R. (2001). Development of economic thresholds and monitoring systems for Heliothes armigera (Lepidoptera: Noctuidae) in tomatoes. Journal of Economic Entomology, 94.
Dod, V. N., Kale, P. B., Wankhade, R. V. and Jadhav, B. J. (1992). Heterosis in the inter-varietal crosses of tomato (Lycopersicon esculentum Mill.). Crop Research, 5, 134 - 139
Hannan, M. M., Ahmed, M.B., Razuy M.A., Karim, R., Khatun, M., Hayda A., Hossaine, M and Roy, U.K. (2007). Heterosis and correlation of yield components in tomato (Lycopersicon esculentum Mill). American - Eurasian Journal of Scientific Research 2, 2.
Heinz, Kevin M and Zalom Frank G. (1995). Variation in trichome - based resistance to Bemisia argentifolii (Homoptera: Aleyrodidae) oviposition in tomato. Journal of Economic Entomology, 88 (5): 1494 - 1502 (9)
Idah, A. P and Aderibigbe B. A. (2007). Quality changes in dried tomatoes stored in sealed polythene and open storage systems. Leonardo Electronic Journal of Agricultural Practices and Technologies. http://lejpt.accidemicirect.org.
Kempthorne, O. (1957). An Introduction to Genetic Statistics. New York: John Wiley and Sons Inc., 208 -223 pp.
Mahendrakar, P. (2004). Development of F1 hybrids in tomato (Lycopersicon esculentum Mill). M.Sc. (Agriculture) Thesis, University of Agricultural Science, Dharwad
Premalakshmi, V., Thyagaraj, T. Veeraragavathatham, D. and Arumugam, T. (2006). Heterosis and combining ability analysis in tomato [(Lycopersicon esculentum (Mill) Wettsd] for yield and yield contributing traits.
Shahabuddin Ahmad, Quamruzzaman A. K. M. and Nazim Uddin M.(2009). Combining ability estimates of tomato (Solanum lycopersicum) in late summer. SAARC Journal of Agriculture, 7 (1): 43 - 56
Singh, A.K., Pan, R.S. and Rai, M. (2005). Combining ability studies on yield and its contributing traits in tomato (Lycopersicon esculentum Mill.). Vegetable Science, 32: 82-83.
Steamwyk, R.N. Van. (1983). Lipidopterous pests of tomatoes in southern desert valley. California Agriculture, 37: 12-13
Tendulkar, S.K. (1994). Studies on line x tester analysis for development of F1 hybrids in tomato (Lycopersicon esculentum Mill). M.Sc. (Agriculture) Thesis, University of Agricultural Science, Dharwad.
Yashavantakumar, K.H. (2008). Heterosis and combining ability for resistance against tospovirus in tomato (Solanum lycopersicon Mill) Wettsd.). M.Sc. (Agriculture) Thesis, University of Agricultural Science, Dharwad.
