Influence of magnesium nutrition on the sensitivity of tomato plants to air pollution
Tomato plants grown in sand culture and provided complete nutrient solution or solutions containing deficient or superoptimal Mg concentrations were fumigated with HF at 5.0 or 9.7 ..mu..g F/m/sup 3/ for 7 days. The severity of HF-induced chlorosis on epical and medial leaves was enhanced in Mg deficient plants and suppressed in plants grown at the highest level. Foliar accumulation of F was inhibited in plants provided the lowest and highest Mg levels. The presence of necrotic tissue probably suppressed F accumulation in Mg deficient plants; however, it was not a factor in plants given superoptimal Mg. The HF X Mg interactions, with respect to foliar injury and F accumulation, revealed that Mg deficient plants were more susceptible and plants given excess Mg were more resistant to HF than plants cultured on complete nutrient media.
- Research Organization:
- Boyce Thompson Institute, Yonkers, NY
- OSTI ID:
- 5194995
- Journal Information:
- HortScience; (United States), Vol. 5:4
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
FLUORINE
BIOLOGICAL ACCUMULATION
HERBS
SENSITIVITY
HYDROFLUORIC ACID
TOXICITY
LEAVES
NECROSIS
MAGNESIUM
BIOLOGICAL EFFECTS
NUTRITIONAL DEFICIENCY
AIR POLLUTION
NUTRIENTS
TOMATOES
ALKALINE EARTH METALS
ELEMENTS
FOOD
FRUITS
HALOGENS
HYDROGEN COMPOUNDS
INORGANIC ACIDS
METALS
NONMETALS
PATHOLOGICAL CHANGES
PLANTS
POLLUTION
560303* - Chemicals Metabolism & Toxicology- Plants- (-1987)