Results 71 to 80 of about 1,446 (175)

Sex-Specific Seasonal Trajectories of Photosystem II Function During Natural Senescence in Ginkgo biloba Revealed by OJIP Fluorescence Analysis

open access: yesLife
Dioecious plants often exhibit sex-specific physiological strategies that influence their response to environmental change. However, it is not well understood whether such dimorphism extends to the developmental trajectory of the photosynthetic apparatus
Fanghao Cheng   +4 more
doaj   +1 more source

The Evolution of Dioecy-Concluding Remarks

open access: yesAnnals of the Missouri Botanical Garden, 1984
Since the pioneer work of Darwin on the evolution of sexual systems in plants (Darwin, 1877a, 1877b) no sexual strategy in recent years has attracted as much attention as dioecy. First, a number of population genetic models were developed in the 1970s to trace the evolution of dioecy via different pathways (Lloyd, 1975, 1976, 1979; Ross, 1970, 1978 ...
openaire   +3 more sources

Plasticity in Sexual Dimorphism Enhances Adaptation of Dioecious Vallisneria natans Plants to Water Depth Change

open access: yesFrontiers in Plant Science, 2019
Sexual dimorphism in vegetative and reproductive traits is associated with contrasting strategies of males and females for response to varied environmental conditions, causing sex-specific reproduction success and consequently long-distance dispersal and
Yin Zhou   +4 more
doaj   +1 more source

Pollinator Foraging and the Evolution of Dioecy

open access: yesThe American Naturalist, 1981
Distylous flowering plant species are characterized by having two types of individuals that bear different forms of flowers: "pin" flowers with long styles and short stamens and "thrum" flowers with short styles and long stamens (Darwin, 1877; Frankel and Galun, 1977).
openaire   +1 more source

Inflorescences of Cliffortia L. (Rosaceae) and related vegetative branch­ing patterns

open access: yesBothalia: 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

The influence of demography and local mating environment on sex ratios in a wind‐pollinated dioecious plant

open access: yesEcology and Evolution, 2013
Negative frequency‐dependent selection should result in equal sex ratios in large populations of dioecious flowering plants, but deviations from equality are commonly reported.
Melinda Pickup, Spencer C. H. Barrett
doaj   +1 more source

Effects of sex and altitude on nutrient, and carbon and nitrogen stable isotope composition of the endangered shrub Baccharis concinna G.M. Barroso (Asteraceae)

open access: yesActa Botânica Brasílica
Previous ecological studies of dioecious plant species have found that female plants preferentially occur at lower altitudes where there are typically better nutritional conditions, while male plants often occur in less favorable sites.
G. Wilson Fernandes   +5 more
doaj   +1 more source

Agronomic evaluation of hemp (Cannabis sativa L.) for cannabidiol production in Yunnan, China

open access: yesFrontiers in Agronomy
IntroductionHemp (Cannabis sativa L.) has gained worldwide attention for its emerging role as a valuable medicinal source, particularly for cannabidiol (CBD) extraction.
Wenjing Ouyang   +8 more
doaj   +1 more source

Climate Zones Shape the Global Diversity of Sexual Systems in Forests Woody Plants

open access: yesDiversity
Sexual systems critically influence woody plant evolution and forest functioning, yet their global patterns and environmental drivers remain understudied.
Haixia Li   +5 more
doaj   +1 more source

Sexual Structure of Potentilla bifurca L. Coenopopulations in the Altay-Sayan Mountain Region [PDF]

open access: yesЖурнал Сибирского федерального университета: Серия Биология, 2015
Sexual structure of 47 populations of dioecious Potentilla bifurca in the steppe, forest-steppe and alpine zones in the six provinces of the Altai-Sayan mountain region was studied. Based on the sexual spectrum the populations were divided into two types:
Vladimir N. Godin
doaj  

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