Effect of Single and Interplantings on Pathogenicity of Pratyenchus penetrans and P. neglectus to Alfalfa and Crested Wheatgrass

Alfalfa is a host of Pratylenchus penetrans and P. neglectus, whereas crested wheatgrass is a host of P. neglectus but not of P. penetrans. In a 120-day greenhouse experiment at 24 ñ 3 C, P. neglectus inhibited the growth of 'Lahontan' alfalfa and 'Fairway' crested wheatgrass. Th...

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Publié dans:Journal of nematology. - 1969. - 26(1994), 4 vom: 10. Dez., Seite 460-6
Auteur principal: Griffin, G D (Auteur)
Format: Article
Langue:English
Publié: 1994
Accès à la collection:Journal of nematology
Sujets:Journal Article Agropyron cristatum Medicago sativa P. penetrans Pratylenchus neglectus alfalfa crested wheatgrass nematode reproductive index root lesion nematodes plus... root weight shoot weight survival virulence
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245 1 0 |a Effect of Single and Interplantings on Pathogenicity of Pratyenchus penetrans and P. neglectus to Alfalfa and Crested Wheatgrass 
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520 |a Alfalfa is a host of Pratylenchus penetrans and P. neglectus, whereas crested wheatgrass is a host of P. neglectus but not of P. penetrans. In a 120-day greenhouse experiment at 24 ñ 3 C, P. neglectus inhibited the growth of 'Lahontan' alfalfa and 'Fairway' crested wheatgrass. There were no differences in persistence and plant growth of alfalfa and crested wheatgrass, or reproduction of P. neglectus, in single plantings of alfalfa (AO) or crested wheatgrass (CWO), or in interplanted alfalfa and crested wheatgrass (ACW) treatments. On alfalfa, P. penetrans inhibited growth and reproduced more than did P. neglectus. Inhibition of plant growth and reproduction of P. penetrans was greater on alfalfa in AO than in ACW treatments. Pratylenchus penetrans did not reproduce on crested wheatgrass, but inhibited growth of crested wheatgrass in interplanted treatments and was avirulent in single planted treatments. Results were similar in a controlled growth chamber experiment at 15, 20, 25, and 30 C. Both nematode species inhibited alfalfa growth at all temperatures, and P. penetrans was more virulent than was P. neglectus to alfalfa at all temperatures and treatments. Plant growth inhibition and reproduction of P. penetrans on alfalfa in single and interplanted treatments were similar at 15-20 C, but were greater in single than in interplanted treatments at 25-30 C. Pratylenchus penetrans was avirulent to crested wheatgrass in the single planted treatments at all temperatures, but inhibited growth of crested wheatgrass in interplanted treatments at 20-30 C. Plant growth and reproduction of P. neglectus on crested wheatgrass was similar in single and interplanted treatments at 20-30 C and 15-30 C, respectively 
650 4 |a Journal Article 
650 4 |a Agropyron cristatum 
650 4 |a Medicago sativa 
650 4 |a P. penetrans 
650 4 |a Pratylenchus neglectus 
650 4 |a alfalfa 
650 4 |a crested wheatgrass 
650 4 |a nematode 
650 4 |a reproductive index 
650 4 |a root lesion nematodes 
650 4 |a root weight 
650 4 |a shoot weight 
650 4 |a survival 
650 4 |a virulence 
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