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Blue green aphid resistance

WebSep 30, 2024 · The bluegreen aphid ( Acyrthosiphon kondoi) is a pest of lucerne, lupins, medics, clovers, and pastures. This tiny pest feeds directly on the foliage, damaging the plant and spreading harmful viruses through infected crops. The bluegreen aphid is grey-green to blue-green in colour and can be confused with the pea aphid or the green … WebAphids on alfalfa (Medicago sativa) including Aphis craccivora Koch (cowpea aphid, CPA), Acyrthosiphon pisum Harris (pea aphid, PA) and Therioaphis trifolii Buckton (spotted alfalfa aphid, SAA) cause significant yield losses worldwide. In this experiment, the development of these three species of aphids on 16 alfalfa cultivars was compared. The results showed …

Cotton leafroll dwarf disease: An enigmatic viral disease in cotton ...

WebSigni cant progress has been made in the understanding of genetic resistance towards bluegreen aphid in the model legume Medicago truncatula 3. Two resistance genes were mapped to coiled coil (CC ... WebPlanting alfalfa varieties resistant to blue alfalfa aphid has been the most effective means of controlling aphids in alfalfa. Prolonged periods of below-normal temperatures, however, may lower plant resistance to blue alfalfa aphid when it is most needed and some crop injury … quotes about changed behavior https://fusiongrillhouse.com

Pea aphid biotype performance on diverse Medicago host …

WebOct 3, 2013 · Description: The blue alfalfa aphid looks very much like the pea aphid. However, the blue alfalfa aphid is slightly smaller, more of a blue-green in color, and may have a waxy appearance. In contrast, the … WebSep 28, 2024 · For information on collecting and posting samples email [email protected] or call 0487 292 556. Bluegreen aphids can be identified by their grey-green to blue-green colour, oval-shaped body, and long legs. Adults are approximately three millimetres long and are most common in spring and autumn. … http://www.naaic.org/stdtests/updated/pdfs/BlueAlfalfaAphid.pdf shirley martinet

Keep close eye for crops on pest insect resistance status

Category:Diversity for resistance to a moderately virulent bluegreen aphid ...

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Blue green aphid resistance

New insecticide resistance detected in bluegreen aphid

WebMay 7, 2024 · Several different classes of R-genes conferring resistance to insects have been identified and characterized, aphid-resistance (Rag) genes against aphids in soybean (Zhang et al. 2010), Acyrthosiphon-induced necrosis (AIN) gene against blue-green aphid in Medicago (Klingler et al. 2009), Gall midge resistance genes (Gm) … WebSep 1, 2007 · Genetic resistance to Acyrthosiphon kondoi Shinji (bluegreen aphid or blue alfalfa aphid) has been identified in Medicago truncatula Gaert. (barrel medic) and …

Blue green aphid resistance

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WebThe pea aphid is bright green and has a dark band at the tip of each antennal segment. Blue aphid populations tend to build up in the early spring but decline when tempera- … WebUse of cultivars for rearing blue alfalfa aphids that have resistance to spotted alfalfa aphid and pea aphid, such as PA-1, may help to prevent colony contamination. The best …

WebApr 10, 2024 · Some host plant varieties grown in South America are resistant, but all varieties grown in the United States are susceptible. ... Cotton blue disease (CBD) is a viral disease capable of causing significant losses in the cotton industry. ... Aphis craccivora and the green peach aphid Myzus persicae transmit CpSDaV (Horn et al., 1995), which is ... WebOct 3, 2013 · In contrast, the pea aphid is lighter green in color and shinier than the blue alfalfa aphid. The third antennal segment of the blue alfalfa aphid is uniformly brown; that of the pea aphid has a narrow dark band …

WebFeb 14, 2007 · The results for cowpea aphid and green peach aphid indicate that there is some target species-specificity in the resistance mechanisms to bluegreen aphid, spotted alfalfa aphid and spotted clover aphid, which is typical of genetic resistance mechanisms against aphids (Klingler et al., Reference Klingler, Powell, Thompson and Isaacs 1998; … WebMay 10, 2024 · Bluegreen aphid (BGA) is a pest of lucerne seed and other legume crops; the pest damages lucerne plants via direct damage due to feeding and …

WebAug 31, 2024 · While the evolution of insecticide resistance is a reasonably common occurrence in some species of crop pests (e.g., green peach aphids), the insecticide resistance we have detected in BGA here is the first of its kind in this species. ... Share via E-mail: Understanding and developing a response to bluegreen aphid resistance to …

Webidentified accessions carrying resistance to a range of aphid species (Crawford et al., 1989), including three independent resistance loci, TTR, AKR and APR, that confer resistance to spotted alfalfa aphid (SAA; Therioaphis trifolii), blue green aphid(BGA;Acyrthosiphonkondoi)andpeaaphid,respectively (Gao et al., 2008). shirley marshall east providence riWebFeb 13, 2024 · In natural and agricultural conditions, plants are attacked by a community of herbivores, including aphids and mites. The green peach aphid and the two-spotted spider mite, both economically important pests, may share the same plant. Therefore, an important question arises as to how plants integrate signals induced by dual herbivore attack into … shirley martinez colorado springsWebMay 30, 2024 · In general the pea aphid is larger than the blue alfalfa aphid and lacks its dark blue-green color. Distribution: The pea aphid, Acyrthosiphon pisum (Harris), ... One of the best methods to reduce the … shirley marrow anderson