Results 41 to 50 of about 1,444 (208)
Ecological Processes, 2021 Background The expression of gender in gymnosperms is challenging because the extent of variability in gender segregations in tree crowns and selection pressure of nature can modify the gender through time.
Vinod Prasad Khanduri +2 more
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Reproductive assurance drives transitions to self-fertilization in experimental Caenorhabditis elegans [PDF]
, 2014 Evolutionary transitions from outcrossing between individuals to selfing are partly responsible for the great diversity of animal and plant reproduction systems.
Chelo, Ivo M +3 more
core +2 more sources
Scientific Reports, 2021 Castor (Ricinus communis L) is an ideal model species for sex mechanism studies in monoecious angiosperms, due to wide variations in sex expression. Sex reversion to monoecy in pistillate lines, along with labile sex expression, negatively influences ...
Sujatha Thankeswaran Parvathy +2 more
doaj +1 more source
Incidence, correlates, and origins of dioecy in the Island Flora of New Caledonia [PDF]
, 2014 Premise of research. Because it is an inherently risky sexual system, dioecy is globally rare. Attempts to explain unusually high incidences of dioecy on certain islands have generated a considerable literature on the relationships among dioecy, its ...
Lowry, P. P. +3 more
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Evolution of the Fucaceae (Phaeophyceae) inferred from nrDNA-ITS [PDF]
, 2014 Sequences of the internal transcribed spacer region (ITS-1, 5.8S, and ITS-2) of nuclear ribosomal DNA were obtained from 16 species representing all six genera of Fucaceae (Ascophyllum, Fucus, Hesperophycus, Pelvetia, Pelvetiopsis, and Xiphophora) plus ...
Alice, L. A. +2 more
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The effect of sheltered load on reproduction in Solanum carolinense, a species with variable self-incompatibility [PDF]
, 2009 In previous studies, we have investigated the strength of self-incompatibility (SI) in Solanum carolinense, a highly successful weed with a fully functional SI system that inhabits early successional and other disturbed habitats.
Keser, L.H. +2 more
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Frontiers in Plant Science, 2021 Background:Hydrangea section Cornidia consists of 26 currently accepted species and a yet undefined number of new species and erroneously synonymized taxa.
Carolina Granados Mendoza +7 more
doaj +1 more source
Inflorescences of Cliffortia L. (Rosaceae) and related vegetative branching patterns
Bothalia: African Biodiversity & Conservation, 2003 The inflorescence construction of eight species, representative of the types found in the 119 species of the rosaceous genus Cliffortia L. is described, based on stereo microscopic examination of fresh and dried specimens, combined with extensive field ...
A. C. Fellingham, H. P. Linder
doaj +1 more source
Testing mechanisms of compensatory fitness of dioecy in a cosexual world [PDF]
, 2019 Questions: All else being equal, populations of dioecious species with a 50:50 sex ratio have only half the effective reproductive population size of bisexual species of equal abundance. Consequently, there is a need to explain how dioecious and bisexual
Du, Y +10 more
core +2 more sources
, 2016 One of the genes responsible for producing different "morphs" of primrose flowers has been ...
Barrett +8 more
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