Results 111 to 120 of about 3,162 (211)

Resistance in Triticum aestivum, Triticum monococcum and Triticum turgidum to Rhopalosiphum padi

open access: yesThe European Zoological Journal
The bird cherry-oat aphid Rhopalosiphum padi (L.) (Hemiptera: Aphididae) is a cosmopolitan species that attacks all the major cereals, causing the yield loss directly by removing nutrients and indirectly by vectoring plant virus diseases. The study aimed
B. Kordan   +6 more
doaj   +1 more source

Characterization of Resistance, Evaluation of the Attractiveness of Plant Odors, and Effect of Leaf Color on Different Onion Cultivars to Onion Thrips (Thysanoptera: Thripidae) [PDF]

open access: yes, 2017
Onion thrips, Thrips tabaci Lindeman (Thysanoptera: Thripidae), is a worldwide pest of onion, Allium cepa L. In field studies on onion resistance conducted in 2007 and 2008 using 49 cultivars, 11 showed low leaf damage by T. tabaci. In laboratory studies,
Deutschlander, Mark   +4 more
core  

National versus Trinitarian cacao hybrids in Ecuador: which is less infested by sap pests and which is less damaged by pod pests

open access: yesFrontiers in Agronomy
Cacao (Theobroma cacao L.) is a tropical crop in high global demand. Ecuador is a significant producer and exporter of cacao where, there are several fine aroma cacao cultivars (type Nacional) and CCN51 (Trinitarian origin) in which the damages caused by
Dorys T. Chirinos   +6 more
doaj   +1 more source

Population Dynamics and Clonal Comparisons of Cowpea Aphid (Homoptera: Aphididae) on Resistant and Susceptible Cowpea Cultivars [PDF]

open access: yes, 2017
Survivorship, growth, and reproductive performance of cowpea aphid, Aphis craccivora Koch, were studied on whole plants and excised plant tissues of aphid-resistant (‘ICV-12') and aphid-susceptible (‘ICV-1') cultivars of cowpea, Vigna unguiculata (L ...
Annan, I. Billy   +2 more
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Antixenotic resistance of eight Cucumis genotypes to melon aphid Aphis gossypii (Hemiptera: Aphididae) and some associated plant traits

open access: yesJournal of Crop Protection, 2017
The melon aphid, Aphis gossypii (Glover), is one of the major pests of cucurbits and an efficient vector of plant viruses such as Cucumber Mosaic Virus. Host-plant resistance is one of the management strategies that can be used to control this pest.
Nazanin Doryanizadeh   +3 more
doaj  

Stylet Penetration Activities by Aphis craccivora (Homoptera: Aphididae) on Plants and Excised Plant Parts of Resistant and Susceptible Cultivars of Cowpea (Leguminosae) [PDF]

open access: yes, 2017
Direct current electrical penetration graphs (DC-EPGs) were used to analyze the stylet penetration activities of cowpea aphid, Aphis craccivora Koch, on plants of aphid-resistant (ICV-12) and aphid-susceptible (ICV-1) cultivars of cowpea, Vigna ...
Annan, I. Billy   +5 more
core  

Host Plant Resistance of Cool-Season (C3) Turfgrasses to Above- and Belowground Feeding by Tipula paludosa (Diptera: Tipulidae) [PDF]

open access: yes, 2017
Feeding on above- and belowground plant tissues by Tipula paludosa Meigen during the period of rapid growth from second to forth instars is highly damaging to cool-season (C3) turfgrasses.
Peck, Daniel C., Petersen, Matthew J.
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Effects of Rag1 on the Preference and Performance of Soybean Defoliators [PDF]

open access: yes, 2013
The Rag1 gene confers antibiotic resistance to soybean aphid, Aphis glycines Matsumura (Hemiptera: Aphididae), and in 2010, varieties expressing Rag1 were released for commercial use in the United States.
Bruner, Robert   +4 more
core   +2 more sources

Symbiotic control of the olive fruit fly, Bactrocera oleae [PDF]

open access: yes, 2018
The olive fruit fly Bactrocera oleae (Rossi) (OLF) is a major pest, which causes severe yield losses and quality decay of olive oil. The widespread use of chemical insecticides to control this pest is a major concern for the resulting environmental ...
David, Giron-Jimenez   +5 more
core  

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