منابع مشابه
Floral structure and ontogeny of Syndiclis (Lauraceae)
Generic delimitation in the Beilschmiedia group of the Lauraceae remains ambiguous because flowering specimens of a few genera with confined distribution are poorly represented in herbaria, and a few floral characters important for taxonomy are still poorly known. Syndiclis is sporadically distributed in southwestern China, and is represented in the herbaria by only a few flowering specimens. W...
متن کاملFloral ontogeny of Annonaceae: evidence for high variability in floral form.
BACKGROUND AND AIMS Annonaceae are one of the largest families of Magnoliales. This study investigates the comparative floral development of 15 species to understand the basis for evolutionary changes in the perianth, androecium and carpels and to provide additional characters for phylogenetic investigation. METHODS Floral ontogeny of 15 species from 12 genera is examined and described using ...
متن کاملFloral ontogeny of Ruteae (Rutaceae) and its systematic implications.
Floral development was investigated in Ruta graveolens and Psilopeganum sinense, representing two genera in the tribe Ruteae. Special attention was paid to the sequence of initiation of organ whorls in the androecium and gynoecium. The antepetalous stamens arise at the same level as the antesepalous stamens in both species. The carpels are antepetalous in both taxa, indicating the androecium in...
متن کاملInfluence of 2,4-D and BAP on callus growth and the subsequent regeneration of somatic embryos in long-term cultures of Pelargonium x domesticum cv. Madame Layal
This long-term study demonstrates for the first time that it is possible to propagate embryogenic cultures in pelargoniums and to subsequently initiate the differentiation of embryos using the cultivar Madame Layal (Pelargonium x domesticum). Propagation of callus was only possible with combinations of 2,4dichlorophenoxyacetic acid (2,4-D) and 6benzylaminopurine (BAP), which gave rise to embryo...
متن کاملFloral and inflorescence morphology and ontogeny in Beta vulgaris, with special emphasis on the ovary position.
BACKGROUND AND AIMS In spite of recent phylogenetic analyses for the Chenopodiaceae-Amaranthaceae complex, some morphological characters are not unambiguously interpreted, which raises homology questions. Therefore, ontogenetic investigations, emphasizing on 'bracteoles' in Atripliceae and flowers in Chenopodioideae, were conducted. This first paper presents original ontogenetic observations in...
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ژورنال
عنوان ژورنال: Journal of the American Society for Horticultural Science
سال: 2000
ISSN: 0003-1062,2327-9788
DOI: 10.21273/jashs.125.1.36