Results 41 to 50 of about 6,668 (219)

DEVELOPMENT OF NEW FORMS OF TREE-SHAPED TOMATO AND THEIR USE IN BREEDING PROGRAM

open access: yesОвощи России, 2017
Tree-shaped plants of tomato have many useful traits, which gain them advantages over common tomato forms. In world plant collection there are over 200 accessions, cultivars and hybrids of tree-shaped tomato.
V. M. Rotari   +3 more
doaj   +1 more source

1164. Echinacea simulata McGregor

open access: yesCurtis's Botanical Magazine, EarlyView.
Summary Echinacea simulata McGregor (Compositae: Heliantheae: Zinniinae) is described and illustrated. Notes are provided for the species' cultivation, propagation, likely pests and diseases, and availability. A full synonymy is given, along with type citations and known presence of type material, together with relevant notes. Statements of the species'
Nicholas Hind, Deborah Lambkin
wiley   +1 more source

Silencing of CrNPR1 and CrNPR3 Alters Plant Susceptibility to Periwinkle Leaf Yellowing Phytoplasma

open access: yesFrontiers in Plant Science, 2019
Phytoplasmas are prokaryotic plant pathogens that cause considerable loss in many economically important crops, and an increasing number of phytoplasma diseases are being reported on new hosts. Knowledge of plant defense mechanisms against such pathogens
Yi-Chang Sung   +8 more
doaj   +1 more source

Screening potential insect vectors in a museum biorepository reveals undiscovered diversity of plant pathogens in natural areas

open access: yesEcology and Evolution, 2021
Phytoplasmas (Mollicutes, Acholeplasmataceae), vector‐borne obligate bacterial plant parasites, infect nearly 1,000 plant species and unknown numbers of insects, mainly leafhoppers (Hemiptera, Deltocephalinae), which play a key role in transmission and ...
Valeria Trivellone   +3 more
doaj   +1 more source

Lethal Effects of the Wild Potato Solanum bulbocastanum on the Planthopper Pentastiridius leporinus, a Vector of Bacterial Pathogens in Potato

open access: yesJournal of Applied Entomology, EarlyView.
ABSTRACT The planthopper Pentastiridius leporinus [Hemiptera: Cixiidae] is a vector of the two plant pathogenic bacteria ‘Candidatus Arsenophonus phytopathogenicus’ and ‘Candidatus Phytoplasma solani’ causing ‘bacterial potato tuber wilt’ in potato.
Eva Therhaag   +2 more
wiley   +1 more source

Refinement of the taxonomic structure of 16SrXI and 16SrXIV phytoplasmas of gramineous plants using multilocus sequence typing [PDF]

open access: yes, 2016
Phytoplasmas that infect gramineous plants, including Napier grass stunt, sugarcane whiteleaf, sugarcane grassy shoot, and Bermuda grass whiteleaf, have been classified into two closely related groups, 16SrXI and 16SrXIV, based on the 16S ribosomal RNA ...
Chamini Kanatiwela-de Silva   +10 more
core   +2 more sources

Causal agents of stone fruit diseases in Slovenia and the potential for diminishing their economic impact - a review

open access: yesPlant Protection Science, 2016
In the last twenty years, stone fruit production in Slovenia has considerably decreased. Acreage with peaches and nectarines has been significantly reduced. Orchard renewal has decreased for various reasons; among them, the frequent occurrence of various
Ivan Žežlina   +3 more
doaj   +1 more source

Efficacy of Zeolite and Kaolin in the Control of Cacopsylla pyri (L.) (Hemiptera: Psyllidae) and Compatibility With Its Natural Antagonist Anthocoris nemoralis (Fabricius) (Hemiptera: Anthocoridae)

open access: yesJournal of Applied Entomology, EarlyView.
ABSTRACT The pear psyllid Cacopsylla pyri is a major pest of European pear orchards, responsible for significant yield losses. Its management is increasingly challenged by restrictions on synthetic active ingredients, resistance development, and the shift towards sustainable production systems.
Laura Depalo   +3 more
wiley   +1 more source

Insecticidal activity of a protein extracted from bulbs of Phycella australis Ravenna against the aphids Acyrthosiphon pisum Harris and Myzus persicae Sulzer [PDF]

open access: yes, 2016
Aphids cause significant losses in many agricultural crops and in many cases cause repeated insecticide sprays, which increase the risk of resistance. Therefore, other alternatives are needed to control them.
Devotto, Luis   +4 more
core   +2 more sources

Elucidating R‐gene‐mediated resistance to wheat dwarf virus in Triticum aestivum genotypes

open access: yesAnnals of Applied Biology, Volume 188, Issue 3, Page 947-961, May 2026.
This study investigates R‐gene‐mediated resistance to wheat dwarf virus (WDV) among different wheat genotypes. Following inoculation with Psammotettix alienus (leafhoppers) and the subsequent appearance of characteristic symptoms such as yellowing and dwarfing, phenotypic responses were evaluated alongside molecular analyses, including quantification ...
Priyanka Krishnamurthy   +3 more
wiley   +1 more source

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