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Accueil du site → Master → Etats Unis → 1986 → PHYSIOLOGICAL RESPONSES OF TOMATO CULTIVARS SUBJECTED TO SALINITY (GERMINATION, RESPIRATION

University of Arizona (1986)

PHYSIOLOGICAL RESPONSES OF TOMATO CULTIVARS SUBJECTED TO SALINITY (GERMINATION, RESPIRATION

Al-Bahrany, Abdulaziz Maatook

Titre : PHYSIOLOGICAL RESPONSES OF TOMATO CULTIVARS SUBJECTED TO SALINITY (GERMINATION, RESPIRATION)

Auteur : Al-Bahrany, Abdulaziz Maatook

Université de soutenance : University of Arizona

Grade : Master of Science (MS) 1986

Résumé
Germination percentage, seed respiration, and plant growth of UC-82-L, Peto 95, and Peto 343 tomato cultivars (Lycopersicon esculentum Mill.) were evaluated at different salt concentrations of NaCl and CaC^ ranging from 0 to -15 bars. Percent germination was inversely related to salt concentration. Peto 95 followed by Peto 343 had the higher germination percentage averaged over the five osmotic concen trations. Dark respiration of germinating seeds decreased as salinity increased. Highest rates were obtained from Peto 95, which seemed to have the most tolerant to salinity. Seedlings were grown in Hoagland’s solution at five salinity levels and were evaluated after 10 weeks for shoot and root weights, root length, and leaf area. The three cultivars showed lower values for each characteristic at increasing salinity levels. Propagation of tomato by transplants rather than direct seeding seemed more efficient in reducing the impact of salinity on tomato plants.

Mots clés : Tomatoes. ; Plants — Effect of salts on.

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