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Stress‐induced ripening of the non‐ripening tomato mutant nor
Author(s) -
Arad Shoshana Malis,
Mizrahi Yosef
Publication year - 1983
Publication title -
physiologia plantarum
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.351
H-Index - 146
eISSN - 1399-3054
pISSN - 0031-9317
DOI - 10.1111/j.1399-3054.1983.tb00760.x
Subject(s) - ripening , lycopersicon , mutant , softening , transpiration , horticulture , ethylene , chemistry , kinetin , botany , biology , biochemistry , photosynthesis , materials science , explant culture , in vitro , gene , catalysis , composite material
Tomato ( Lycopersicon esculentum Mill.) plants of the non‐ripening mutant nor (3rd backcross to the normal cultivar Rutgers) were grown under water stress induced in two different ways: a) reduction of water supply and b) increase in transpiration rate by adding kinetin to the nutrient solution. Both drought treatments induced fruits of the non‐ripening mutant nor to ripen, that is, the parameters characteristic of ripening – red pigment, taste, pectolytic activity, softening, and the evolution rates of CO 2 and ethylene – all increased, although not to the normal level. Such an increase does not normally take place in the nor mutant under control conditions. It is suggested that fruits of the nor mutant can be induced to ripen by any kind of water stress. The induction mechanism is still to be explored.