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Droopy: a wilty mutant of potato deficient in abscisic acid
Author(s) -
QUARRIE S. A.
Publication year - 1982
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 - 10.1111/1365-3040.ep11587567
Subject(s) - abscisic acid , guard cell , mutant , botany , solanum , horticulture , biology , chemistry , biochemistry , gene
. Droopy mutant of potato ( Solanum tubero‐sum L., group Pliureja ) wilts because of excessive stomatal opening (Waggoner & Simmonds, 1966). Progeny of the cross between potato clones C.P.C. 4461 and C.P.C. 4463 showed characteristics similar to those of the original droopy potato. These plants wilted at high vapour pressure deficit and their stomatal conductances in the light and the dark were higher than those of normal plants. Conductances were reduced by applied abscisic acid (ABA), but stomata remained partially open even when guard cells were plasmolysed. Leaves of droopy plants accumulated very little ABA when water‐stressed.