ISHS Acta Horticulturae 323: Symposium on Soil and Soilless Media under Protected Cultivation in Mild Winter Climates
THE ROLE OF ETHYLENE IN THE RESPONSES OF PEAS (PISUM SATIVUM L.) TO SALINE STRESS |
| Authors: | S.O. El-Abd, A.F. Abou-Hadid, A.R. Smith, M.A. Hall |
| Abstract:
The effect of salt stress on the growth and development of pea plants treated at the seedling stage is described, three weeks old plants were treated with either 0, 25, 50 or 100 mM NaCl and vegetation analyses were carried out 9, 16 and 23 d after treatment. Generally, salt treatment reduced the value of the growth parameters measured compared to the controls. The possibility that salinity effects may be mediated, at least in part, by the hormone ethylene was investigated in pea seedlings. Seedlings were maintained in the dark at 23 c and treated with 0, 25, 50 and 100 mM Nacl. Plumular Hook angle, epicotyl isodiametric growth, radicle length and ethylene production were measured in 5-d-old seedlings. The results obtained suggest that there is a similarity in the responses of seedlings to salt and ethylene. Also increased ethylene production from pea seedlings correlates with increased Nacl concentration. The possible rate of ethylene in salt stress is discussed. | |
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