Articles
SALINITY STRESS ALTERS THE VEGETATIVE AND REPRODUCTIVE GROWTH OF CUCUMBER PLANTS.
Article number
323_38
Pages
411 – 422
Language
Abstract
Thirty-day-old seedlings of cucumber (cv.
Beta-alpha) were transplanted into five liter pots containing acid-washed sand.
An automatic drip system irrigated the seedlings twice daily with a complete nutrient solution from 150L reservoirs.
The nutrient solution was amended with NaCl in a stepwise fashion to final treatment levels of 0, 40, 60 and 80 mM NaCl in the presence and absence of CaCl2 (0 and 10 mM). The seedlings were grown under glasshouse conditions and the growth and reproductive behavior of the plants were quantified.
Beta-alpha) were transplanted into five liter pots containing acid-washed sand.
An automatic drip system irrigated the seedlings twice daily with a complete nutrient solution from 150L reservoirs.
The nutrient solution was amended with NaCl in a stepwise fashion to final treatment levels of 0, 40, 60 and 80 mM NaCl in the presence and absence of CaCl2 (0 and 10 mM). The seedlings were grown under glasshouse conditions and the growth and reproductive behavior of the plants were quantified.
Plant growth parameters examined included plant height, leaf number and area, fresh and dry weights.
Increasing salinity levels progressively decreased all growth parameters.
The addition of CaCl2 partially offset the deleterious effects, but at the highest NaCl level (80mM) growth was depressed to a greater extent when CaCl2 was present.
Similar responses were observed on reproductive parameters.
Fruit growth, fruit numbers and seed yields per plant decreased with increasing salinity.
These results will be discussed in relation to changes in stress ethylene production, alterations in free amino acid pools and tissue ion accumulation patterns.
Publication
Authors
A.M. Abd-Alla, R.A. Jones, A.F. Abou-Hadid
Keywords
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