A Note on the Effect of Heat Stress on Growth and Fruiting of Three Tomato (Solanum lycopersicum) Landraces from Sudan

Aida Ali Elsharief, Mustafa Mohamed Ali Elballa


Two experiments were carried out to study the effect of high
temperature on growth of three tomato landraces. The experiments were
carried out during the summer of 2007 and 2008 in the nursery of the
Department of Horticulture, Faculty of Agriculture, University of
Khartoum, using a Randomized Complete Block Design (RCB) with three
replicates. The landraces were HSD O977, Tuktuk and Abu Zarif
traditionally grown in summer under irrigation or rain-fed conditions,
compared to Strain B, an imported commercial cultivar normally grown in
winter. During the experimental period, the Temperature varied between 36-
380C and 23-250C day and night respectively, measured with a maximumminimum temperature thermometer. Significant genotypic differences in
plant height, time to 50% flowering, time to physiological maturity, fruit
size and fruit weight were observed. Plant height was shortest for Strain B
and highest for HSD0977 (61.0 and 59,8cm and91.0 and99.9cm for the first
and second seasons respectively). Days to 50% flowering were shortest for
HSD0977 and longest for Abu Zarif (50.7 and 51.3 days and 63.0 and 62.3
days for the first and second seasons respectively). Days to physiological
maturity were shortest for HSD0977 and longest for Tuktuk (83.0 and 83.0
days and 108.0 and 111.3 days for the first and second seasons
respectively). Fruit size was largest for Abu Zarif and Tuktuk and smallest
for HSD 0977 while fruit weight ranged from 6.0 to 64.9 gm and from 5.7
to 49.6 gm in the first and second seasons respectively. HSD 0977 had the
lowest fruit weight during both seasons but the highest weight was recorded
for Abu Zarif in the first season.


Heat stress; tomato land races

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Berry, S.Z., and Rafique-Uddin, M. 1988. Effect of high temperature on

fruit set in tomato cultivars and selected germplasm. HortScience 23:


Darwesh, F.M. 1996. Evaluation of Some Protective Techniques for Use in

Tomato Production under Low and High Temperature Conditions.

M.Sc. Thesis, Faculty of Agriculture, University of Cairo, Egypt.

Abdalla, A.A., and Verkerk, K. 1968. Growth, flowering and fruit set of the

tomato at high temperature. Netherlands Journal of Agric. Sci. 16:


Aiken, R. 2009. Climate Change Impacts on Crop Growth in the Central

High Plains. Proceedings of the 21st Annual Central Plains Irrigation

Conference, Colby Kansas, February 24-25, 2009, CPIA, 760 N

Thompson, Colby, Kansas.Gray, M. W., Ostin, A., Standberg, D., and Romano, P. C. 1998. High

temperature promotes auxin – mediated hypocotyl elongation in

Arabidopsis. Proc. Natl. Acad. Sci., USA.

Passam, H.C., Karapanos, I.C., Bebeli, P.J., and Savvas, D. 2007. A Review

of Recent Research on Tomato Nutrition,Breeding and Post0Harvest

Technology with Reference to Ftuit Quality. The European Journal

of Plant Science and Biotechnology 1(1): 1-21.

Singh, N.P., Bhardawj, A.K., Kumar, A. and Singh, K.M. 2004. Modern

Technology on Vegetable Crops. International Book Distribution

Company, India.

Wahid, A., Gelani, S., Ashraf, M., and Foolad, M.R. 2007. Heat tolerance in

plants: An overview. Environmental and Experimental Botany 61:



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