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Article: Microsporogenesis in male-sterile and hermaphroditic plants of nine gynodioecious taxa of Hawaiian bidens (Asteraceae)

TitleMicrosporogenesis in male-sterile and hermaphroditic plants of nine gynodioecious taxa of Hawaiian bidens (Asteraceae)
Authors
Issue Date1987
PublisherBotanical Society of America, Inc (Columbus), Business Office. The Journal's web site is located at http://www.amjbot.org/
Citation
American Journal Of Botany, 1987, v. 74 n. 2, p. 209-217 How to Cite?
AbstractMicrosporogenesis was investigated in hermaphroditic and male-sterile plants in nine gynodioecious taxa of Hawaiian Bidens. Normal microsporogenesis in hermaphrodites and the onset of abortion in male steriles were similar in all taxa and in a hybrid between two gynodioecious species. The early abnormal vacuolation of tapetal cells is the first visible evidence leading to premeiotic abortion of microsporogenesis in male steriles. The sporogenous cells disintegrate rapidly after the vacuolation of the tapetum, resulting in a shrunken, indehiscent anther which is composed of only the epidermal layer with some remnant cells of the endothecium and the connective at anthesis. In hermaphrodites, the tapetal cklls remain dense and undergo karyokinesis to become binucleate during meiosis I. The tapetum becomes plasmodia1 after microspores are released from tetrads and gradually disappears during pollen formation. The genetic factor($ which cause the abortion act with remarkable precision and consistency in all taxa investigated. This suggests that gynodioecy in all Hawaiian Bidens is homologous and the establishment of male sterility in Hawaiian Bidens occurred only once. The spread of the genetic male-sterile factor(s) may be the result of adaptive radiation of the original gynodioecious species or natural interspecific hybridization.
Persistent Identifierhttp://hdl.handle.net/10722/177173
ISSN
2015 Impact Factor: 2.811
2015 SCImago Journal Rankings: 1.459
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorSun, Men_US
dc.contributor.authorGanders, FRen_US
dc.date.accessioned2012-12-04T02:30:14Z-
dc.date.available2012-12-04T02:30:14Z-
dc.date.issued1987en_US
dc.identifier.citationAmerican Journal Of Botany, 1987, v. 74 n. 2, p. 209-217en_US
dc.identifier.issn0002-9122en_US
dc.identifier.urihttp://hdl.handle.net/10722/177173-
dc.description.abstractMicrosporogenesis was investigated in hermaphroditic and male-sterile plants in nine gynodioecious taxa of Hawaiian Bidens. Normal microsporogenesis in hermaphrodites and the onset of abortion in male steriles were similar in all taxa and in a hybrid between two gynodioecious species. The early abnormal vacuolation of tapetal cells is the first visible evidence leading to premeiotic abortion of microsporogenesis in male steriles. The sporogenous cells disintegrate rapidly after the vacuolation of the tapetum, resulting in a shrunken, indehiscent anther which is composed of only the epidermal layer with some remnant cells of the endothecium and the connective at anthesis. In hermaphrodites, the tapetal cklls remain dense and undergo karyokinesis to become binucleate during meiosis I. The tapetum becomes plasmodia1 after microspores are released from tetrads and gradually disappears during pollen formation. The genetic factor($ which cause the abortion act with remarkable precision and consistency in all taxa investigated. This suggests that gynodioecy in all Hawaiian Bidens is homologous and the establishment of male sterility in Hawaiian Bidens occurred only once. The spread of the genetic male-sterile factor(s) may be the result of adaptive radiation of the original gynodioecious species or natural interspecific hybridization.en_US
dc.languageengen_US
dc.publisherBotanical Society of America, Inc (Columbus), Business Office. The Journal's web site is located at http://www.amjbot.org/en_US
dc.relation.ispartofAmerican Journal of Botanyen_US
dc.titleMicrosporogenesis in male-sterile and hermaphroditic plants of nine gynodioecious taxa of Hawaiian bidens (Asteraceae)en_US
dc.typeArticleen_US
dc.identifier.emailSun, M: meisun@hkucc.hku.hken_US
dc.identifier.authoritySun, M=rp00779en_US
dc.description.naturelink_to_subscribed_fulltexten_US
dc.identifier.doi10.2307/2444022en_US
dc.identifier.scopuseid_2-s2.0-0000138091en_US
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0000138091&selection=ref&src=s&origin=recordpageen_US
dc.identifier.volume74en_US
dc.identifier.issue2en_US
dc.identifier.spage209en_US
dc.identifier.epage217en_US
dc.identifier.isiWOS:A1987G022500007-
dc.publisher.placeUnited Statesen_US
dc.identifier.scopusauthoridSun, M=7403181447en_US
dc.identifier.scopusauthoridGanders, FR=6603285975en_US

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