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	Provedor de dados Genet. Mol. Biol. (1) Rev. Bras. Bot. (1) Autor BITTENCOURT JR.,NELSON S. (1) Hoffmann,Magali (1) Louro,Ricardo Pereira (1) MARIATH,JORGE E.A. (1) Melo,Edésio J.T. de (1) Pereira,Telma Nair Santana (1) Souza,Margarete Magalhães de (1) Mais... Palavra-chave Embryo sac (2) Megagametogenesis (2) Cellularization (1) Confocal microscopy (1) Egg cell (1) Female germ unit (1) Passiflora edulis f. flavicarpa Deg. (1) Passifloraceae (1) Tabebuia (1) Yellow passion fruit (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2002 (2) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Embryo sac development in yellow passion fruit Passiflora edulis f. flavicarpa (Passifloraceae) Genet. Mol. Biol. Souza,Margarete Magalhães de; Pereira,Telma Nair Santana; Hoffmann,Magali; Melo,Edésio J.T. de; Louro,Ricardo Pereira. The yellow passion fruit, Passiflora edulis f. flavicarpa, is one of the most important Brazilian fruit crops. It is an allogamous, diploid, and self-incompatible species. It has hermaphrodite, solitary flowers, located in the leaf axils and protected by leaf bracts. The flower has an androgynophore, which is a straight stalk supporting its reproductive parts. There are usually five anthers, located at the tip of each of the five filaments. The ovary is borne just above the filaments, at the top of the androgynophore; there are three styles that are united at their base, and at the top there are three stigmas. The objective of this research was to observe embryo sac development in yellow passion flowers. Ovaries at different stages of development were... Tipo: Info:eu-repo/semantics/article Palavras-chave: Egg cell; Embryo sac; Passifloraceae; Yellow passion fruit; Passiflora edulis f. flavicarpa Deg.; Confocal microscopy; Megagametogenesis. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572002000400017 Ovule ontogeny of Tabebuia pulcherrima Sandwith (Bignoniaceae): embryo sac development Rev. Bras. Bot. BITTENCOURT JR.,NELSON S.; MARIATH,JORGE E.A.. The chalazal megaspore develops in a Polygonum-type embryo sac. The amyloplast-rich endothelium is partially degraded during the expansion of the micropylar portion of the megagametophyte. Organization of the mature embryo sac is determined by the patterns of vacuolation, nuclear migration, spindle orientation and cellularization. The egg cell is slightly chalazal in relation to the synergids, and its micropylar end does not touch the micropylar channel. At the chalazal pole of the egg apparatus, the common walls between the synergids, the egg and central cells, despite their tenuity, are present in the mature megagametophyte. The polar nuclei do not fuse before fertilization and the antipodals are persistent until the first stages of endosperm formation.... Tipo: Info:eu-repo/semantics/article Palavras-chave: Embryo sac; Megagametogenesis; Female germ unit; Cellularization; Tabebuia. Ano: 2002 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042002000200001 Registros recuperados: 2 Primeira ... 1 ... Última

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