Document Type : Original Article
Authors
1
M.Sc. Graduate, Department of Horticultural Science, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Khuzestan, Iran
2
Associate Professor, Department of Horticultural Science, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Khuzestan, Iran
3
Assistant Professor, Department of Horticultural Science, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Khuzestan, Iran
Abstract
The first cold and the last heat of the season in spring cultivation limit the growth and development of the tomato plant in Khuzestan. Tomato cultivars resistant to temperature stresses can be one of the basic needs for economic production. To identify genotypes compatible with spring planting conditions, an experiment was conducted in 2008-2009 crop year in two stages before seedling transfer in a completely randomized design and after seedling transfer with agronomic test on 40 different tomato genotypes from Russia and the Netherlands. And the usual figures of the region were taken. Evaluated traits include: number of leaves and seedling height in the seventh week after seed planting, time of emergence of the first, second and third inflorescences, number of leaves until the emergence of the first, second and third inflorescences, number of flowers in the first, second and third inflorescences Fruit formation time in the first, second and third fruit clusters, number of fruits formed in the first, second and third fruit clusters, average fruit weight and yield were compared. Most genotypes were of medium height (8-11 cm). Among the different genotypes, the earliest and most late genotypes were 21 and 44, respectively. Genotype No. 16 with the average of 2744 g.plant had the highest fruit yield. Genotypes 32 and 20 had large fruits and genotypes 43 and 45 had very small fruits. The most sensitive genotypes Sto were to the first cold of the season and the most resistant genotypes to the last heat of the genotypes 16 and 25 seasons.
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