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Resistance of fully imbibed tomato seeds to very high salinities
Author(s) -
KURTH E.,
JENSEN A.,
EPSTEIN E.
Publication year - 1986
Publication title -
plant, cell and environment
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.646
H-Index - 200
eISSN - 1365-3040
pISSN - 0140-7791
DOI - 10.1111/j.1365-3040.1986.tb01625.x
Subject(s) - germination , salinity , imbibition , salt (chemistry) , cultivar , saline , horticulture , biology , chemistry , agronomy , botany , endocrinology , ecology
Seeds of Lyeopersicon esculentum cv. VF36 (a salt‐sensitive cultivar), L. esculentum var. Edkawi (which is fairly salt‐resistant), and a wild relative, L. cheesmanii , were exposed to various concentrations of NaCl, up to 460 mol m −3 , either directly or following imbibition in non‐saline nutrient solution. After 10 d exposure to salt, they were transferred to non‐saline solution. All taxa showed some germination at the lowest salinity tested, 92 mol m −3 NaCl, but virtually no germination occurred at 184 mol m −3 NaCl or higher salinities. Within 2 d after removal of the salt stress, however, the seeds of L. esculentum reached control levels of germination, even if they had already been on the verge of germination when the stress was imposed. The seeds of L. cheesmanii were less resistant to NaCl. The physiological basis for the resistance of VF36 seeds is discussed.