PHOTOPERIODIC INDUCTION OF FLOWERING ON DIFFERENT EXPLANTED TISSUES FROM STREPTOCARPUS NOBILIS CULTURED IN VITRO / INDUÇÃO FOTOPERIÓDICA DA FLORAÇÃO EM DIFERENTES TECIDOS ISOLADOS DE STREPTOCARPUS NOBILIS CULTIVADOS IN VITRO

Different kinds of explanted tissues from vegetative plants of Streptocarpus nobilis were cultivated in vitro under flower inducing photoperiods, and their ability to flowering compared. Isolated shoot apices and seedlings were able to produce flowers about 10 weeks after planting. Stem, petiole and...

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Veröffentlicht in:Boletim de botânica 1977-01, Vol.5, p.21-25
1. Verfasser: Handro, Walter
Format: Artikel
Sprache:eng
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Zusammenfassung:Different kinds of explanted tissues from vegetative plants of Streptocarpus nobilis were cultivated in vitro under flower inducing photoperiods, and their ability to flowering compared. Isolated shoot apices and seedlings were able to produce flowers about 10 weeks after planting. Stem, petiole and leaf midrib segments rarely showed direct flower neo-formation as leaf discs do. In these cases, leafy buds were formed firstly, and the flowers developed 10 - 12 weeks later, in the neo-formed shoot. Différentes explantes de plantas vegetativas de Streptocarpus nobilis foram cultivados in vitro em condições fotoperiódicas indutoras de floração, e comparada sua capacidade para florescer. Ápices caulinares e plántulas são capazes de florescer após 10 semanas em cultura. Segmentos de caule, pecíolo ou nervura mediana da folha raramente mostram neoformação de gemas florais diretamente do explante, como acontece nos discos foliares. Geralmente gemas com folhas diferenciam-se primeiro, e então estes meristemas tornam-se florais, ocorrendo a floração 10 - 12 semanas após o início da cultura.
ISSN:0302-2439
2316-9052