Results 71 to 80 of about 11,339,680 (167)

The classification of tetraploid wheat by phylogenetic and cytogenetic analyses

open access: yesBiologia Plantarum, 2020
Tetraploid wheat (Triticum turgidum L.) is an important species within the genus Triticum and harbors many desirable agronomic traits. The classification, origin, and evolution of tetraploid wheat remain confused and controversial, resulting in useless ...
S.-Y. LI   +13 more
doaj   +1 more source

Negative plant–soil feedback influences a dominant seeded species, Western yarrow (Achillea millefolium), in grassland restoration

open access: yesRestoration Ecology, Volume 32, Issue 8, November 2024.
Plant community ecology guides restoration of degraded lands, yet seed‐based restorations sometimes fail or result in unpredictable outcomes, necessitating a better understanding of community trajectory and stability. Western yarrow (Achillea millefolium) declined suddenly in two separate restoration projects after initial high relative abundance.
Charles W. Casper   +6 more
wiley   +1 more source

Dated phylogeny, phylogeography, and classification of Allium subgenus Amerallium (Amaryllidaceae) from the Old World, based on six DNA fragments

open access: yesTAXON, Volume 73, Issue 4, Page 971-991, August 2024.
Abstract The present study aims to reveal phylogenetic and phylogeographical patterns of the Eurasian species of Allium subg. Amerallium, covering 75% of the species in the Mediterranean region and East Asia, as well as 12 North American species representing most sections of the monophyletic American part of the subgenus.
Nikolai Friesen   +7 more
wiley   +1 more source

Using a Centroid‐based approach for a reliable identification of morels (Morchella spp.): A case study for food authentication

open access: yesJournal of Food Science, Volume 89, Issue 8, Page 4745-4757, August 2024.
Abstract Food fraud is a problematic yet common phenomenon in the food industry. It impacts numerous sectors, including the market of edible mushrooms. Morel mushrooms are prized worldwide for their culinary and medicinal use. They represent a taxonomically complex group in which food fraud has already been reported.
Melissa Cravero   +4 more
wiley   +1 more source

Intelligent Tutoring Systems

open access: yesJournal of Intelligent Systems, 2017
The importance of intelligent tutoring systems has rapidly increased in past decades. There has been an exponential growth in the number of ends users that can be addressed as well as in technological development of the environments, which makes it more ...
Bradáč Vladimír   +1 more
doaj   +1 more source

Porous silicon nanostructures: Synthesis, characterization, and their antifungal activity

open access: yesOpen Chemistry
The use of synthetic pesticides has come under scrutiny, and there has been a subsequent shift toward the investigation of alternative methods for the treatment of plant diseases. One notable advancement in this field is the utilization of porous silicon
Nabil Marwa   +5 more
doaj   +1 more source

Pseudo-nitzschia species on the Catalan coast: characterization and contribution to the current knowledge of the distribution of this genus in the Mediterranean Sea

open access: yesScientia Marina, 2010
Proliferations of the genus Pseudo-nitzschia recur along the Catalan coast (NW Mediterranean) throughout the year. The establishment of 58 clonal cultures facilitated morphological studies with scanning electron microscopy (SEM) and ITS 5.8S rDNA ...
Sonia Quijano-Scheggia   +6 more
doaj   +1 more source

The Polycomb Complex PRC2 and its Mark in Life

open access: yesNature, 2011
Polycomb group proteins maintain the gene-expression pattern of different cells that is set during early development by regulating chromatin structure. In mammals, two main Polycomb group complexes exist — Polycomb repressive complex 1 (PRC1) and 2 (PRC2)
R. Margueron, D. Reinberg
semanticscholar   +1 more source

Modification of knowledge about sexually transmitted infections and use of condoms in male adolescents

open access: yesRevista Científica Estudiantil 2 de Diciembre, 2021
Introduction: sexually transmitted infections in adolescence constitute an international problem. In Cuba, there is little education on responsible sexuality.
Diana Esperanza Monet Alvarez   +5 more
doaj  

Fungal Community of Culturable Fungal Endophytes Associated with Cinchona calisaya Collected from Gambung, West Java, Indonesia

open access: yesMakara Journal of Science, 2019
Previous studies regarding endophytic fungi associated with Cinchona were focused on the analysis of quinine and related fungal metabolites. In the current study, the community structure of culturable endophytic fungi associated with C.
Iman Hidayat   +3 more
doaj   +1 more source

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