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Biblioteca(s): |
Epagri-Sede. |
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Data corrente: |
23/05/2011 |
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Data da última atualização: |
23/05/2011 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
FINATTO, T.; SANTOS, K. L.; STEINER, N.; BIZZOCHI, L.; HOLDERBAUM, D.; DUCROQUET, J. P. H. J.; GUERRA, M. P.; NODARI, R. O. |
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Afiliação: |
Epagri |
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Título: |
Lateacting selfincompatibility in Acca sellowiana Myrtaceae. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Australian Journal of Botany , v. 59, p. 53-60, 2011. |
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Idioma: |
Inglês |
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Conteúdo: |
Acca sellowiana (Berg) Burret is a predominantly allogamous species with hermaphroditefl owers that has barriers to self-fertilisation such as dichogamy by protogyny and self-incompatibility. This study aimed to identify when
self-incompatibility occursin A.sellowianafl owers submitted to self-pollinations.Pollinations were made using nine known self-incompatible accessions in several treatments including manual cross-pollination, manual self-pollination, no
pollination and natural pollination. Flowers were pollinated and pistils collected at times ranging from 1 to 30 days after pollination (DAP). In both cross- and self-pollinations the fertilisation occurred from 18 DAP and the zygote was visualised at 24 and 26DAP, respectively. The abscissionof theself-pollinatedfl owers increasedfrom 26DAPonwards, when significant differences (P<0.05) were found for the percentage of abscission among self-pollinated and crosspollinatedfl owers.At30DAP,72% of self-pollinatedfl owerswereabscised.The size of ovules and o ariesofself-pollinated #64258;owersshowednosignificantdifferencefromthoseofnon-pollinatedflowersthroughout30DAP,whilethosefromcrosspollinatedflowersweresignificantlylarger(P<0.05)thantheothertreatmentsfrom22and24DAP,respectively.After40
DAP,therewasnofruitdevelopmentinself-pollinationandnon-pollinationtreatments.Ourstudybringsgreaterclaritytothe
mechanism of self-incompatibility in A. sellowiana, indicating late-acting self-incompatibility occurring through the
rejection/abscission of self-pollinatedflowers precisely after syngamy and zygote formation. MenosAcca sellowiana (Berg) Burret is a predominantly allogamous species with hermaphroditefl owers that has barriers to self-fertilisation such as dichogamy by protogyny and self-incompatibility. This study aimed to identify when
self-incompatibility occursin A.sellowianafl owers submitted to self-pollinations.Pollinations were made using nine known self-incompatible accessions in several treatments including manual cross-pollination, manual self-pollination, no
pollination and natural pollination. Flowers were pollinated and pistils collected at times ranging from 1 to 30 days after pollination (DAP). In both cross- and self-pollinations the fertilisation occurred from 18 DAP and the zygote was visualised at 24 and 26DAP, respectively. The abscissionof theself-pollinatedfl owers increasedfrom 26DAPonwards, when significant differences (P<0.05) were found for the percentage of abscission among self-pollinated and crosspollinatedfl owers.At30DAP,72% of self-pollinatedfl owerswereabscised.The size of ovules and o ariesofself-pollinated #64258;owersshowednosignificantdifferencefromthoseofnon-pollinatedflowersthroughout30DAP,whilethosefromcrosspollinatedflowersweresignificantlylarger(P<0.05)thantheothertreatmentsfrom22and24DAP,respectively.After40
DAP,therewasnofruitdevelopmentinself-pollinationandnon-pollinationtreatments.Ourstudybringsgreaterclaritytothe
mechanism of self-incompatibility in A. sellowiana, indicating late-... Mostrar Tudo |
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Palavras-Chave: |
Feijoa sellowiana; Reproductive biology. |
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Categoria do assunto: |
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Marc: |
LEADER 02051naa a2200145 a 4500
001 1076721
005 2011-05-23
008 2011 bl uuuu u00u1 u #d
100 1 $aEpagri
245 $aLateacting selfincompatibility in Acca sellowiana Myrtaceae.
260 $c2011
520 $aAcca sellowiana (Berg) Burret is a predominantly allogamous species with hermaphroditefl owers that has barriers to self-fertilisation such as dichogamy by protogyny and self-incompatibility. This study aimed to identify when self-incompatibility occursin A.sellowianafl owers submitted to self-pollinations.Pollinations were made using nine known self-incompatible accessions in several treatments including manual cross-pollination, manual self-pollination, no pollination and natural pollination. Flowers were pollinated and pistils collected at times ranging from 1 to 30 days after pollination (DAP). In both cross- and self-pollinations the fertilisation occurred from 18 DAP and the zygote was visualised at 24 and 26DAP, respectively. The abscissionof theself-pollinatedfl owers increasedfrom 26DAPonwards, when significant differences (P<0.05) were found for the percentage of abscission among self-pollinated and crosspollinatedfl owers.At30DAP,72% of self-pollinatedfl owerswereabscised.The size of ovules and o ariesofself-pollinated #64258;owersshowednosignificantdifferencefromthoseofnon-pollinatedflowersthroughout30DAP,whilethosefromcrosspollinatedflowersweresignificantlylarger(P<0.05)thantheothertreatmentsfrom22and24DAP,respectively.After40 DAP,therewasnofruitdevelopmentinself-pollinationandnon-pollinationtreatments.Ourstudybringsgreaterclaritytothe mechanism of self-incompatibility in A. sellowiana, indicating late-acting self-incompatibility occurring through the rejection/abscission of self-pollinatedflowers precisely after syngamy and zygote formation.
653 $aFeijoa sellowiana
653 $aReproductive biology
773 $tAustralian Journal of Botany$gv. 59, p. 53-60, 2011.
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