2001
DOI: 10.1590/s0100-204x2001001000015
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Propagação de orquídea Gongora quinquenervis por semeadura in vitro

Abstract: O objetivo deste trabalho foi avaliar a germinação e a organogênese in vitro em Gongora quinquenervis em dois meios nutritivos, Knudson "C" e Murashige & Skoog, com três concentrações de BAP (0,0, 0,5 e 1,0 mg L-1). Os protocormos cultivados no meio Knudson "C" necrosaram. A maioria dos embriões cultivados em meio Murashige & Skoog tendeu a diferenciar-se em calos. Estes calos apresentaram alto potencial morfogenético, regenerando grande número de plantas via organogênese indireta, sobretudo no materia… Show more

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Cited by 21 publications
(23 citation statements)
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References 9 publications
(10 reference statements)
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“…Although the coconut appeared advantageous medium compared to Knudson, this generally presented certain variability across the time and/or local conditions that should also be considered in an in vitro seed propagation program. The lowest germination success showed by the medium C of Knudson had also been reported by Martini et al (2001) studying the propagation in another native orchid (Gongora quinquenervis), which after 15 days of seed inoculations showed a rapid die of the seeds, characterized by the total necrosis of embryos. It was very important to note that the differences between the culture medium could only be seen by using a generalized linear models approach.…”
Section: Resultssupporting
confidence: 54%
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“…Although the coconut appeared advantageous medium compared to Knudson, this generally presented certain variability across the time and/or local conditions that should also be considered in an in vitro seed propagation program. The lowest germination success showed by the medium C of Knudson had also been reported by Martini et al (2001) studying the propagation in another native orchid (Gongora quinquenervis), which after 15 days of seed inoculations showed a rapid die of the seeds, characterized by the total necrosis of embryos. It was very important to note that the differences between the culture medium could only be seen by using a generalized linear models approach.…”
Section: Resultssupporting
confidence: 54%
“…The intensity and extent of the TTC staining were successfully employed to predict the germination percentage of a lot of seeds (Chang et al, 1999). Subsequently, the seed lots were transferred to different culture medium: 1) Nutritive Knudson or C medium: This medium is used for germinating the seeds of the other orchid species and usually employed as the basal medium (Martini et al, 2001;Droste et al, 2005). 2) Coconut water (150 ml L -1 ) containing 20 g L -1 of sucrose, and 6.5 g L -1 agar (pH adjusted to 5.3).…”
Section: In Vitro Non-symbiotic Germination Proceduresmentioning
confidence: 99%
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“…O meio KN foi o mais favorável para a germinação das sementes de H. tenebrosa, mas em Gongora quinquenervis este mesmo meio provocou a necrose de todos os protocormos formados (Martini et al 2001). Outro fator que também deve ser considerado é a relação entre os nutrientes e sua influência na germinação.…”
Section: Meios De Culturaunclassified
“…De acordo com Martini et al (2001), a semeadura assimbiótica de orquídeas constitui técnica bastante relevante do ponto de vista comercial e ecológi-co. As plantas produzidas dessa forma podem ser utilizadas em programas de reintrodução de espécies nativas em áreas de preservação ambiental devido à variabilidade genética gerada pelo explante. O sucesso na tecnologia e aplicação dos métodos de cultura in vitro deve-se à melhor compreensão dos requerimentos nutricionais das células e dos tecidos em cultura.…”
Section: Introductionunclassified