Boron Deficiency in Unfertilized Cotton (Gossypium hirsutum) Ovules Grown in Vitro1
AUTOR(ES)
Birnbaum, Elliott H.
RESUMO
Boron deficiency and phytohormone interactions have been studied in unfertilized cotton (Gossypium hirsutum) ovules grown in vitro. Such ovules required exogenous indoleacetic acid and/or gibberellic acid for fiber elongation. Boron also was required for maintenance of fiber elongation and normal morphogenesis throughout 14 days of culture. The amount of exogenous boron necessary for maximum fiber elongation varied among experiments, presumably in relation to endogenous boron levels at anthesis. Some ovular epidermal cells distant from the liquid medium could be induced to elongate into fiber even after 6 days in boron-deficient medium in response to the later addition of boron.
ACESSO AO ARTIGO
http://www.pubmedcentral.nih.gov/articlerender.fcgi?artid=366636Documentos Relacionados
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