Results 31 to 40 of about 11,203 (251)

Recovery of genetic diversity in threatened plants through use of germinated seeds from herbarium specimens [PDF]

Plant Ecology, 2015
The reintroduction of ex situ conserved individuals is an important approach for conserving threatened plants and reducing extinction risk. In this study, we elucidated the effects on the genetic diversity of wild populations of Vincetoxicum pycnostelma Kitag.
Nakahama, Naoyuki, Hirasawa, Yuki, Minato, Tsubasa, Hasegawa, Masahiro, Isagi, Yuji, Shiga, Takashi   +5 more
openaire   +1 more source

Trying to Understand the Complicated Taxonomy in Amaranthus (Amaranthaceae): Insights on Seeds Micromorphology

Plants, 2023
Amaranthus is a genus taxonomically complex because of its high morphological variability, which led to nomenclatural disorders, misapplication of names, and misidentifications. Floristic and taxonomic studies on this genus are still incomplete, and many
Duilio Iamonico, Amara Noor Hussain, Arya Sindhu, Venugopalan nair Saradamma Anil Kumar, Shabnum Shaheen, Mamoona Munir, Paola Fortini   +6 more
doaj   +1 more source

Automating digital leaf measurement: the tooth, the whole tooth, and nothing but the tooth. [PDF]

PLoS ONE, 2012
Many species of plants produce leaves with distinct teeth around their margins. The presence and nature of these teeth can often help botanists to identify species.
David P A Corney, H Lilian Tang, Jonathan Y Clark, Yin Hu, Jing Jin   +4 more
doaj   +1 more source

Automatic Detection System for the Identification of Plants Using Herbarium Specimen Images

Tropical Agricultural Research, 2012
An automatic leaves image identification system for endemic plants in Sri Lanka using neural networks is described in this study. Stemonoporus, a genus of Dipterocarpaceae which has about 30 species of plants was selected for the proposed system. National Herbarium specimens were used to obtain the images.
D Wijesingha, FMMT Marikar
openaire   +3 more sources

Testing enemy release of non‐native plants across time and space using herbarium specimens in Norway

Journal of Ecology, 2022
Abstract The enemy release hypothesis predicts that invasive plant success is in part due to the absence of natural enemies in the invaded range. However, few studies have assessed how enemy release may vary over time or space.
Katy Ivison, James D. M. Speed, Tommy Prestø, Wayne Dawson   +3 more
openaire   +2 more sources

A case of budding speciation in the California Floristic Province and infraspecific divergence in Abronia villosa

American Journal of Botany, EarlyView.
Abstract Premise Budding speciation occurs when peripheral populations adapt to local ecological conditions and “bud” off from a widespread progenitor species. Traditionally regarded as rare because of its sympatric and parapatric nature, budding speciation is largely understudied.
Eli J. Allen, Eric F. LoPresti, Matthew G. Johnson, Oscar M. Vargas   +3 more
wiley   +1 more source

Foliar diagnostic characters in Iberian species of Isoetes L. (Isoetaceae, Pteridophyta)

Anales del Jardín Botánico de Madrid, 2003
This is a comparative study of foliar morphology of the species of Isoetes L. growing in the Iberian Península. The taxa included are /. durieui and /. histrix (terrestrial), /. setaceum, and /. velatum subsp. Velatum (amphibious), and /.
Carmen Prada, Cristina H. Rolleri
doaj   +1 more source

Vascular plant species diversity of Mt. Etna (Sicily): endemicity, insularity and spatial patterns along the altitudinal gradient of the highest active volcano in Europe [PDF]

PeerJ, 2020
Background Altitudinal variation in vascular plant richness and endemism is crucial for the conservation of biodiversity. Territories featured by a high species richness may have a low number of endemic species, but not necessarily in a coherent pattern.
Saverio Sciandrello, Pietro Minissale, Gianpietro Giusso del Galdo   +2 more
doaj   +2 more sources

Turning a new leaf: PhenoVision provides leaf phenology data at the global scale

Applications in Plant Sciences, EarlyView.
Abstract Premise Plant phenology dictates many aspects of community function and ecosystem dynamics. Yet, global phenology data are still limited, especially in areas lacking monitoring programs. Here we present a new data resource, PhenoVision–Leaf, which extends a computer vision pipeline utilizing iNaturalist digital image vouchers to produce global‐
Erin L. Grady, Ellen G. Denny, Carrie E. Seltzer, John Deck, Daijiang Li, Russell Dinnage, Robert P. Guralnick   +6 more
wiley   +1 more source

Strawberry cultivars with Fragaria orientalis Losinsk. in their pedigrees

Труды по прикладной ботанике, генетике и селекции
Development of productive strawberry cultivars adapted to harsh winter conditions is an urgent task for plant breeders in Russia. The M. G. Safronov Yakut Scientific Research Institute of Agriculture has used wild strawberry forms combining several ...
A. A. Kharchenko, V. I. Belevtsova, I. G. Chukhina   +2 more
doaj   +1 more source