Post-pollination mechanisms in Nicotiana longiflora and N. plumbaginifolia: pollen tube growth rate, offspring paternity and hybridization

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dc.audiencegeneralPublices_MX
dc.contributor.authorFigueroa Castro, Dulce María
dc.contributor.authorHoltsford, Timothy P.
dc.creatorFigueroa Castro, Dulce María; 0000-0003-3611-191X
dc.date.accessioned2023-04-18T16:55:07Z
dc.date.available2023-04-18T16:55:07Z
dc.date.issued2009-07-07
dc.description.abstract"In natural populations where interfertile species coexist, conspecific and heterospecific pollen can be delivered to the stigmas. Post-pollination mechanisms might determine the seed siring success of different pollen donors within species as well as the chances for hybridization between species. Nicotiana longiflora and N. plumbaginifolia occur in sympatry in Northwest Argentina, where they have overlapping flowering seasons and share floral visitors. We explored (1) pollen tube growth rates for outcross versus self pollen in single-donor pollinations; (2) siring success of self versus outcross pollen donors in competitive pollinations, and (3) possibilities for hybridization by performing two- (outcross conspecific vs. heterospecific) and three-pollen donor (self vs. outcross vs. heterospecific) crosses. In N. longiflora, both pollen tube growth rate and siring success favored outcross pollen over self pollen and strong rejection of heterospecific pollen. In N. plumbaginifolia, pollen tube growth rate was similar for self and outcross pollen, self pollen sired similar numbers of offspring than outcross pollen and heterospecific pollen sired roughly the same number of progeny than self pollen. Results suggest that in natural sympatric populations, interspecific crosses would likely lead to unidirectional hybridization with N. plumbaginifolia as the seed parent".es_MX
dc.identifierhttps://link.springer.com/article/10.1007/s00497-009-0103-6
dc.identifier.urihttps://hdl.handle.net/20.500.12371/18222
dc.language.isoenges_MX
dc.rights.accesopenAccesses_MX
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0es_MX
dc.subject.otherCompetitive pollinationses_MX
dc.subject.otherCryptic self-incompatibilityes_MX
dc.subject.otherPaternity successes_MX
dc.subject.otherSympatryes_MX
dc.titlePost-pollination mechanisms in Nicotiana longiflora and N. plumbaginifolia: pollen tube growth rate, offspring paternity and hybridizationes_MX
dc.typeArtículoes_MX
dc.type.conacytarticlees_MX
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