Results 121 to 130 of about 3,609 (241)

Dioecy and its correlates in the flowering plants [PDF]

open access: yes, 1995
Ricklefs, Robert E., Renner, Susanne S.
core   +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

Data from: Low siring success of females with an acquired male function illustrates the legacy of sexual dimorphism in constraining the breakdown of dioecy

open access: yes, 2019
Evolutionary transitions from dioecy to functional hermaphroditism must overcome the inertia of sexual dimorphism because modified males or females will express the opposite sexual function for which their phenotypes have been optimized.
Pannell, John R.   +2 more
core   +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

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  

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

Ecological Correlates with Dioecy in the Flora of a Tropical Premontane Wet Forest in Costa Rica.

open access: yes, 2017
There is a considerable disagreement about the selective forces that have led to the evolution of dioecy (i.e., the condition of having separate male and female flowers on separate plants).
Held, Breanne
core  

Functional dioecy in Nothapodytes nimmoniana, a distylous species in the Western Ghats

open access: yes, 2010
Nothapodytes nimmoniana (Icacinaceae) is a subcanopy tree species, commercially exploited for its wood chips that yield an anti-tumour alkaloid. The species displays intriguing sexual variation. Apart from the flowers which are comparable to typical
Vasudeva, R   +3 more
core   +1 more source

Reproductive biology of Hechtia schottii, a dioecious Bromeliaceae, in Mexico

open access: yesRevista de Biología Tropical, 2008
Hechtia schottii is a terrestrial, rosetofilous, dioecious, polycarpic succulent herb, that grows mainly in shrubby associations, and less frequently, in secondary low caducifolious forests, both on calcareous soils or limestone outcrops in Yucatan and ...
Ivón M Ramírez Morillo   +3 more
doaj  

Evolution of Dioecy in Echinocereus coccineus: Relative Influence of Pollinators, Resources and Elevation over Multiple Spatial Scales

open access: yes, 2007
"Why have separate sexes?" is a fundamental question in biology and has been investigated intensively since Darwin first proposed two hypotheses: Separate sexes evolve 1) to avoid detrimental effects of self-fertilization or 2) to improve allocation of ...
Scobell, Summer
core  

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