Inflorescence and flower development in Costus scaber (Costaceae)
نویسندگان
چکیده
منابع مشابه
Genetics and evolution of inflorescence and flower development in grasses.
Inflorescences and flowers in the grass species have characteristic structures that are distinct from those in eudicots. Owing to the availability of genetic tools and their genome sequences, rice and maize have become model plants for the grasses and for the monocots in general. Recent studies have provided much insight into the genetic control of inflorescence and flower development in grasse...
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An intersectional hybridization event between hummingbird-pollinated Costus pulverulentus (sect. Ornithophilus) and large bee-pollinated C. guanaiensis var. macrostrobilus (sect. Costus) in Belize, Central America, is documented by analyses of morphology and pollination biology. Morphologically the hybrid is intermediate between the parental species and retains floral characteristics adaptive t...
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We estimate phylogenetic relationships and the biogeographic and pollination history of Costus subgenus Costus (Costaceae) using sequence data from the internal and external transcribed spacer (ITS and ETS) regions of 18S-26S nuclear ribosomal DNA. The African members of the subgenus form a series of lineages basal to a monophyletic neotropical species radiation. The neotropical species have la...
متن کاملMechanisms and function of flower and inflorescence reversion.
Flower and inflorescence reversion involve a switch from floral development back to vegetative development, thus rendering flowering a phase in an ongoing growth pattern rather than a terminal act of the meristem. Although it can be considered an unusual event, reversion raises questions about the nature and function of flowering. It is linked to environmental conditions and is most often a res...
متن کاملA new phylogeny-based generic classification of Costaceae (Zingiberales)
Costaceae is one of the most easily recognizable groups within the Zingiberales, distinguished from other families within the order by well-developed and sometimes branched aerial shoots that have a characteristic monistichous (one-sided) spiral phyllotaxy (e.g., Kirchoff & Rutishauser, 1990). Its close relationship with Zingiberaceae is evidenced by its former placement as a subfamily within t...
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ژورنال
عنوان ژورنال: Canadian Journal of Botany
سال: 1988
ISSN: 0008-4026
DOI: 10.1139/b88-054