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| Carvalho,Jordano Dorval Tavares de; Oliveira,João Marcelo Santos de; Freitas,Cesar Carvalho de; Martins,Meriélem Saldanha. |
| ABSTRACT This study presents a morphoanatomical analysis of Dyckia ibicuiensis , D. polyclada and D. racinae stamens. Flowers at anthesis were desiccated and their stamens were processed using common light microscopic techniques. Morphologically, the androecium in these species is differentiated by the disposition of the stamens around the gynoecium and by general anther characteristics. Included stamens, with antesepalous filaments different from those of the antepetalous, anthers in a radial disposition, always curved, and sporangia facing the gynoecium characterize D. ibicuiensis and D. racinae . This configuration results from the filament connation, as well as special anatomical characteristics of the anthers, such as the connective with thickenings.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anatomy; Androecium; Anther; Common tube; Connective; Dyckia; Endothecial thickening; Stamen vasculature. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000300389 |
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| Sarun Khumto; Benjawan Rerkasem; Sansanee Jamjod. |
| Cultivated rice (Oryza sativa L.) is self-pollinating, with flowering traits that exclude crosspollination. Hybrid rice seed production is therefore limited by low outcrossing rate between parental lines. To improve outcrossing ability in cultivated rice, common wild rice (O. rufipogon Griff.) was used as a source for outcrossing traits and backcrossed to Suphanburi 1 (SPR1) cultivated rice (BC2). In this study, F5 progenies of the backcross (BC2F5) were grown and evaluated for flowering traits in comparison with SPR1 parent. At flowering, florets were collected to measure the length of anthers and pistil. The anthers of SPR1 averaged 2.32 mm and pistil 1.50 mm, in length. The F5 population ranged 2.40 to 3.93 mm in anther length (3% to 170% of SPR1) and... |
| Tipo: Collection |
Palavras-chave: Anther; Pistil; Outcrossing; Rice; ข้าว; เกสรตัวเมีย; การผสมข้าม; อับละอองเรณู; พันธุ์ลูกผสม; การคัดเลือก; แหล่งพันธุกรรม. |
| Ano: 2012 |
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5334 |
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