Germinations and Early Growth of Two Common Bean Cultivars as Affected by Water Stress and Seed Size
1999
Hadidi, N.A. (Jordan Univ., Amman (Jordan). Dept. of Horticulture and plant protection, Faculty of Agriculture)
An experiment was conducted to investigate the effects of water potential and seed size on seed germination and seedling growth characteristics of two bean cultivars, Ashbeleh and strike, in the growth chamber. Seed germination was significantly affected by water potentials, cultivars and by seed size X cultivar interaction. On the other hand, shoot fresh and dry weights, root fresh and dry weights, shoot and root length and number of secondary roots were significantly decreased with increasing water stress. Although seed had a significant effect on shoot fresh and dry weights, and root length, shoot length, root fresh, and dry weight were not significantly affected by seed size. Small seed size supported significantly less shoot fresh and dry weight, and shorter roots than those produced by large seeds during this study. The two cultivars, Ashbeleh and strike, behave differently for root fresh weight, shoot dry weight, root length and a number of secondary roots. Ashbeleh gave significantly higher shoot dry weights, while strike gave higher root fresh weight, taller root length and a higher number of secondary roots.
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