Results 31 to 40 of about 1,377 (177)
Pollen and anther development malfunction in distylous flowers of Palicourea padifolia (Rubiaceae)
Botanical Sciences, 2020 Background: Heterostyly is a genetic polymorphism in which flowers differ between individual plants of a species in heights at which stamens and style are reciprocally positioned.
Juan Francisco Ornelas +2 more
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Altitudinal variation of the sex ratio and segregation by gender in the dioecious plant Mercurialis perennis L. (Euphorbiaceae) in Serbia [PDF]
Archives of Biological Sciences, 2007 The sex ratio is one of the most intriguing problems for evolutionary biologists. Spatio-temporal variation of male frequency in sexually dimorphic plant species, spatial segregation, and differential investment of the two sex functions have attracted ...
Cvetković Dragana, Jovanović V.
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Evolution of plant sex and molecular mechanisms underlying plants sex separation
Forestry Research, 2023 Unlike animals, plants exhibit more complexity of sexual morphs. The genetic mechanism underlying plant sex is a hot research topic in plant biology. In recent decades, advanced theories have been put forth on plant sex determination, but experimental ...
Wei Li +4 more
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Sex expression in Serbian dendroflora: A case study of Fraxinus ornus var. angustifolia [PDF]
Archives of Biological Sciences, 2012 Out of a total number of tree species in Serbian flora, 28% are hermaphrodites, 43% are monoecious and 29% are dioecious. The dendroflora appears to have a larger proportion of unisexual than hermaphrodite species.
Popović Zorica +6 more
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Frontiers in Plant Science, 2019 Dioecy, the specialization of individuals into either male-only or female-only sexual function, has multiple evolutionary origins in plants. One proposed ancestral mating system is heterodichogamy, two morphs of cross-fertilizing hermaphrodite flowers ...
Eric Wajnberg +8 more
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Repeated evolution of dioecy from androdioecy in Acer [PDF]
New Phytologist, 2004 The evolution of breeding systems was studied in the genus Acer, with special attention to the origin of androdioecy and dioecy, using a phylogenetic approach. Parsimony and maximum-likelihood techniques were used to infer the ancestral character state and trends in the evolution of breeding systems.
Gleiser, G., Verdú, Miguel
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Environmental DNA, 2022 Flowers play a central role in plant reproduction by dispersing and receiving pollen grains delivered by animal vectors or air. They are rich in various nutrients, and therefore, provide an ideal habitat for many microbes.
Maxime Marre +2 more
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Repeated Evolution of Dioecy from Monoecy in Siparunaceae (Laurales) [PDF]
Systematic Biology, 2001 Siparunaceae comprise Glossocalyx with one species in West Africa and Siparuna with 65 species in the neotropics; all have unisexual flowers, and 15 species are monoecious, 50 dioecious. Parsimony and maximum likelihood analyses of combined nuclear ribosomal ITS and chloroplast trnL-trnF intergenic spacer sequences yielded almost identical topologies ...
Renner, Susanne S., Won, Hyosig
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Evolution of crop phenotypic spaces through domestication
New Phytologist, EarlyView.Summary We used domestication as an in vivo replicated experiment to investigate how divergent selection has shaped the evolution of multivariate phenotypic spaces. We measured 11–57 qualitative and quantitative traits in 13 species, either unique or shared between species, and established a framework for cross‐species comparisons. Our results revealed
Arthur Wojcik +18 more
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TAXON, Volume 75, Issue 2, April 2026.Abstract The tempo and mode of assembly of the world's most diverse, tropical floras remain poorly known. Evolutionary relationships within pantropical plant clades such as Connaraceae (Oxalidales, ca. 220 species) offer an opportunity to address this issue.
Serafin J.R. Streiff, Jurriaan M. de Vos
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