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Photocontrol of in vitro bud regeneration: A comparative study of the interaction between light and IAA in a wild type and an aurea mutant of Lycopersicon esculentum
Author(s) -
Marcenaro S.,
Voyiatzi C.,
Lercari B.
Publication year - 1994
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.1399-3054.1994.tb00440.x
Subject(s) - lycopersicon , biology , explant culture , mutant , wild type , botany , blue light , regeneration (biology) , red light , in vitro , horticulture , microbiology and biotechnology , biochemistry , gene , physics , optics
In the presence of 0.2 μ M IAA both the wild type and the aurea mutant of Lycopersicon esculentum Mill, showed a low but significant percentage of bud formation in the dark, whereas no bud formation occurred in the dark when 20 μ M IAA was present in the medium. In both systems blue light always showed a strong promoting effect on bud regeneration, both as final percentage of regeneration and by shortening the initial lag period, suggesting the action of a specific blue light photoreceptor. Red and far‐red light increased the percentage of bud differentiation in wild type explants, with both the IAA concentrations. In the aurea mutant only red at the lowest IAA concentration had such an effect. The final percentage of bud regeneration under red light was greater or equal to that found under blue light in the wild type as well as in the aurea mutant explants cultured in the presence of the lowest IAA concentration.