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The role of darkness, GA and fusicoccin (FC) in breaking photodormancy in Phacelia tanacetifolia seeds
Author(s) -
Cocucci S.,
Ranieri A. M.,
Morgiitti S.,
Ciroli F.
Publication year - 1981
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.1399-3054.1981.tb08489.x
Subject(s) - fusicoccin , gibberellic acid , germination , biology , darkness , botany , phytochrome , gibberellin , biochemistry , enzyme , red light , atpase
The germination of the negatively photoblastic seeds of Phacelia tanacetifolia Benth. (cv. Bleu Clair) is promoted by gibberellic acid and fusicoccin. In the dark, or in the light in the presence of fusicoccin, seed germination is accompanied by an increase of gibberellic acid‐like substances. In these conditions, the inhibition of the synthesis of gibberellic acid‐like substances does not prevent seed germination, but it affects the growth and the survival of the seedlings. Seed germination, growth, and survival of seedlings are discussed in relation to phytochrome, fusicoccin, and gibberellic acid‐iite substances.