منابع مشابه
Efficient shoot organogenesis of begonia (Begonia rex Putz.) induced by thidiazuron
The effects o f thidiazuron (TDZ) on adventitious shoot bud formation from leaf and peti ole explants excised from in-vitro-grown plantlets o f a begonia were tested by a two-step procedure: a short exposure (5 to 120 min) to 40 pM TDZ in liquid MS medium followed by culture on agar-solidified MS medium without growth regulators. Exposure of explains for five min to TDZ induced bud formation, ...
متن کاملMaintenance of species boundaries in a Neotropical radiation of Begonia
A major goal of evolutionary biology is to determine the mechanisms generating biodiversity. In Begonia, one of the largest plant genera (1900+ species), it has been postulated that the high number of endemic species is a by-product of low gene flow among populations, which predisposes the group to speciation. However, this model of divergence requires that reproductive barriers accumulate rapi...
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Begonia dregei and B. homonyma (Begoniaceae), rare plants endemic to coastal forests of eastern South Africa, are two closely related species with high levels of variation among populations in the shape of leaves. Distribution of genetic variation and genetic relatedness were investigated in 12 populations of B. dregei and seven of B. homonyma using polyacrylamide gel electrophoresis. Twelve of...
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Inter-sectional hybrids were successfully obtained by the reciprocal crosses between 11 cultivars (including 6 diploids and 5 tetraploids) of Begonia semperflorens (SS & SSSS genomes) and B. 'Orange Rubra' (RR genome) with the aid of in vitro culture of mature or immature seeds on MS medium containing 0.1 mg l(-1) α-naphthylacetic acid, 0.1 mg l(-1) 6-benzyladenine, 10 mg l(-1) gibberellic acid...
متن کاملMALE BISEXUAL AROUSAL AND CURIOSITY 1! Male Bisexual Arousal: A Matter of Curiosity?
Conflicting evidence exists regarding whether bisexual-identified men are sexually aroused to both men and women. We hypothesized that a distinct characteristic, level of curiosity about sexually diverse acts, distinguishes bisexual-identified men with and without bisexual arousal. Study 1 assessed men’s (N = 277) sexual arousal via pupil dilation to male and female sexual stimuli. Bisexual men...
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ژورنال
عنوان ژورنال: Annals of Botany
سال: 1912
ISSN: 1095-8290,0305-7364
DOI: 10.1093/oxfordjournals.aob.a089435