Results 111 to 120 of about 4,342 (221)

Sex chromosomes in willows [PDF]

open access: yes, 2016
Sexual reproduction is found in most eukaryotes and has in the majority of animal species led to the evolution of separate sexes. In contrast, only 5-6% of all angiospersms are dioecious with female and male flowers on separate individuals. Interestingly,
Pucholt, Pascal
core  

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

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

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   +2 more sources

Floral Biology and Breeding System of Garcinia Imberti Bourd.-A Critically Endangered Tree Species of Western Ghats, Kerala, India [PDF]

open access: yes, 2015
Plant flowering and breeding characteristics are important to understand the reproduction of plant populations. Garcinia imberti belongs to the family Clusiaceae is a critically endangered tree species of Agasthyamalai hills and endemic to Western Ghats,
Kandasamy, R.   +3 more
core  

Dioecy and its correlates in the flowering plants [PDF]

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

Genetic diversity and population structure of an insect‐pollinated and bird‐dispersed dioecious tree Magnolia kwangsiensis in a fragmented karst forest landscape

open access: yesEcology and Evolution
This study combined population genetics and parentage analysis to obtain foundational data for the conservation of Magnolia kwangsiensis. M. kwangsiensis is a Class I tree species that occurs in two disjunct regions in a biodiversity hotspot in southwest
Yanfang Lin   +6 more
doaj   +1 more source

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