Results 31 to 40 of about 16,773 (223)

Assessing the viability of genebanked seeds from rare, wild plants native to the United States using the D.E.A.D. paradigm

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise Genebanks must maintain viable seeds for decades. Seeds that germinate are clearly alive, but some seeds, often from wild populations, do not germinate because they are dormant, empty, aged, or damaged (D.E.A.D.). This work evaluates the effects of D.E.A.D.
Christina Walters   +33 more
wiley   +1 more source

Cytotaxonomy of two species of genus Chrysolaena H. Robinson, 1988 (Vernonieae, Asteraceae) from Northeast Paraguay [PDF]

open access: yes, 2014
Chromosome counts and karyotypes of two species of Chrysolaena H. Robinson 1988 are presented in this paper. Mitotic analysis revealed that both taxa have x=10, a basic chromosome number considered characteristic of the genus.
Dematteis, Massimiliano   +1 more
core   +5 more sources

Loss, persistence and reversal of phenotypic traits

open access: yesBiological Reviews, EarlyView.
ABSTRACT The irreversibility of complex trait loss has long been a tenet of evolutionary biology. However, this idea is increasingly at odds with the numerous documented exceptions across the Tree of Life. We synthesise this growing body of evidence across a diverse array of taxa and traits, exploring the evolutionary conditions that enable ...
Giobbe Forni   +4 more
wiley   +1 more source

ANATOMICAL AND COMPARATIVE STUDY OF SELECTED WILD SPECIES FROM THE FAMILY COMPOSITAE IN ANBAR [PDF]

open access: yesمجلة جامعة الانبار للعلوم الصرفة, 2014
Wild Species of seven Iraqi Asteraceae family were compared anatomically these specie Sonchus oleraceus, Silybum marianum, Gymnarrhena micrantha ,Calendula persica, Aster subulatus, Taraxucum officinale and Onopordon canum include Detailed of anatomical ...
ASHWAQ T.H.AL-RAJAB   +2 more
doaj   +1 more source

Genetic Diversity, Phylogenetics and Molecular Systematics of Guizotia Cass. (Asteraceae) [PDF]

open access: yes, 2007
The genus Guizotia belongs to the tribe Heliantheae in the family Asteraceae. It has been placed under different subtribes. The genus has its center of origin, distribution and genetic diversity in Ethiopia, where G.
Geleta, Mulatu
core  

Xanthium strumarium - a potential cheap resource of plant substances for medicinal use [PDF]

open access: yes, 2019
Xanthium strumarium L. (Asteraceae) is an annual herb which reproduces solely by seed. So far its centre of origin was considered Central or South America. Recent archeological research revealed that the burs of X.
Ionkova I., Kozuharova E., Spadaro V.
core   +1 more source

Protective Effects of Fenugreek and Stevia Extracts on Dexamethasone‐Induced Testicular Damage in a Rat Model

open access: yesFood Safety and Health, EarlyView.
Fenugreek and stevia extracts protect against dexamethasone‐induced testicular damage in male rats by enhancing antioxidant defenses, improving sperm quality, and restoring hormonal balance, highlighting their potential as natural therapeutics for preventing corticosteroid‐induced reproductive toxicity.
Mosab Gad   +3 more
wiley   +1 more source

Aphids associated with shrubs, herbaceous plants and crops in the Maltese Archipelago (Hemiptera, Aphidoidea) [PDF]

open access: yes, 2011
A survey of the aphids associated with Maltese shrubs, herbaceous plants and crops was carried out. Sixty six aphid species were recorded from more than 90 species of host plants.
Azzopardi, Erika   +6 more
core  

Human appreciation of flower colours as cultural ecosystem service in grasslands: A methodological approach

open access: yesGrassland Research, EarlyView.
This literature‐based method estimates human appreciation of flower colours on target grasslands. Step 1: search literature sources (floristic surveys, national floras, web datasets and preference studies). Step 2: flower trait extraction (flower colour and area, flowering period and human colour appreciation scale).
Marco Bianchini   +4 more
wiley   +1 more source

Cassini's Compositae genera: A nomenclatural and taxonomic assessment [PDF]

open access: yes, 2010
Work on the Global Compositae Checklist has highlighted uncertainties and errors in the nomenclatural parameters of many genera and subgenera described by Henri Cassini. Problems concern rank (subgenus vs. genus); type designation; correct place of valid
Flann, C.M., Greuter, W., Hind, D.J.N.
core  

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