Results 41 to 50 of about 5,648 (259)

Seeds of change: The impact of Ethiopia's direct seed marketing approach on smallholders' seed purchases and productivity

open access: yesAmerican Journal of Agricultural Economics, EarlyView.
Abstract While multiple factors explain low adoption rates of improved varieties by small‐scale farmers in sub‐Saharan Africa, a key supply‐side constraint is the limited availability of seed embodying new traits in the volume, quality, price, and timeliness required by farmers. This constraint is partly attributable to classical failures in the market
Dawit Mekonnen   +5 more
wiley   +1 more source

Multiplication végétative de l'épicéa commun (2ème tranche)

open access: yes, 1990
Research projects conducted on the vegetative propagation of the common spruce started in 1981. In 1990, an experiment was initiated in Barres and a pilot-production in Peyrat-le-Château.
Terrasson, D., Bourlon, V., Coulaud, S.
core   +2 more sources

In vitro biotechnological advancements in Malabar nut (Adhatoda vasica Nees): Achievements, status and prospects

open access: yesJournal of Genetic Engineering and Biotechnology, 2018
Adhatoda vasica Nees, belonging to family Acanthaceae, is a well-known medicinal plant. It is endorsed for its pyrroloquinazoline alkaloids and its derivatives, such as vasicine and vasicinone. Germinating A.
Saikat Gantait, Jitendriya Panigrahi
doaj   +1 more source

Interactions between maternal provisioning and natural selection on seed mass fluctuate across heat waves

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Changing climates are leading to more frequent and severe heat waves, potentially threatening plant populations. Both acclimation to stress and selection for heat‐escape or heat‐resistance phenotypes occur during heat waves. However, plastic responses and selection do not necessarily interact cohesively—even producing trait responses ...
Lana F. Gaspard   +4 more
wiley   +1 more source

Intérêt de la multiplication végétative pour la conservation des ressources génétiques des ormes

open access: yesSciences, Eaux & Territoires, 2001
Différentes méthodes de multiplication végétative sont utilisées avec succès pour assurer la conservation ex situ des ressources génétiques des trois espèces d'ormes d'Europe : Ulmus minor, U. glabra, U. laevis.
E. COLLIN
doaj  

In Vitro Propagation Strategies of Medicinally Important Berry Crop, Lingonberry (Vaccinium vitis-idaea L.)

open access: yesAgronomy, 2020
Lingonberry (Vaccinium vitis-idaea L.) is a health-promoting small fruit crop rich in antioxidant metabolites that helps to reduce the incidence of degenerative diseases.
Samir C. Debnath, Usha Arigundam
doaj   +1 more source

Linking community structure and climate vulnerability in desert plant assemblages of southern California

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Desert plant assemblages in southern California provide an opportunity to link patterns of community structure with climate‐driven vulnerability in a rapidly changing environment. California sustains an exceptionally diverse flora of approximately 4300 plant species, with 31% identified as endemic.
Hector Zumbado‐Ulate   +4 more
wiley   +1 more source

Pearl's causality for integrating ecological datasets: A case study on Myricaria germanica in northern Italy

open access: yesApplications in Plant Sciences, EarlyView.
Abstract Premise Applied ecology can significantly influence policy decisions on environmental issues. Therefore, research in this field should be as transparent and reproducible as possible. Existing expertise from a broad range of disciplines should also be integrated into ecological research to allow researchers to maximize understanding of complex ...
Kailin Weitkämper   +5 more
wiley   +1 more source

Improved node culture methods for rapid vegetative propagation of switchgrass (Panicum virgatum L.)

open access: yesBMC Plant Biology, 2021
Background Switchgrass (Panicum virgatum L.) is an important bioenergy and forage crop. The outcrossing nature of switchgrass makes it infeasible to maintain a genotype through sexual propagation. Current asexual propagation protocols in switchgrass have
Yongqin Wang   +4 more
doaj   +1 more source

Are there morpho‐acoustic patterns of adaptation in nonhuman primate ears? Testing the role of ecology and habitat in shaping ear morphology and function

open access: yesThe Anatomical Record, EarlyView.
Abstract Analysis of the variation in the bony structures of the inner and middle ear provides critical insights into functional morphology, as well as adaptive morphology across primates. In this study, we investigated whether ear morphology patterns are related to the ecological characteristics of species and their habitats to test two acoustic ...
Myriam Marsot   +4 more
wiley   +1 more source

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