Effects of Six Pratylenchus vulnus Isolates on the Growth of Peach-Almond Hybrid and Apple Rootstocks

The effects of six geographic isolates of Pratylenchus vulnus on the growth of GF-677 peach-almond hybrid and M-26 apple rootstocks were determined under greenhouse conditions. Plantlets were obtained from micropropagated plant material, and nematode isolates were reared in monoxenic cultures. All i...

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Veröffentlicht in:Journal of nematology. - 1969. - 25(1993), 4 Suppl vom: 10. Dez., Seite 843-8
1. Verfasser: Pinochet, J (VerfasserIn)
Weitere Verfasser: Fernández, C, Esmenjaud, D, Doucet, M
Format: Aufsatz
Sprache:English
Veröffentlicht: 1993
Zugriff auf das übergeordnete Werk:Journal of nematology
Schlagworte:Journal Article Malus silvestris M-26 Pratylenchus vulnus Prunus persica × P. amygdalus GF-677 host response variability nematode reproduction root-lesion nematode
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100 1 |a Pinochet, J  |e verfasserin  |4 aut 
245 1 0 |a Effects of Six Pratylenchus vulnus Isolates on the Growth of Peach-Almond Hybrid and Apple Rootstocks 
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520 |a The effects of six geographic isolates of Pratylenchus vulnus on the growth of GF-677 peach-almond hybrid and M-26 apple rootstocks were determined under greenhouse conditions. Plantlets were obtained from micropropagated plant material, and nematode isolates were reared in monoxenic cultures. All isolates suppressed growth on GF-677 compared with the uninfected controls. Isolate PvRO-S from Spain affected top weight of GF-677 more adversely than PvAT-F from France. Final population densities (Pf) of all P. vulnus on GF-677 were greater than 14.7 times the initial densities (Pi). They increased 61.5-fold on plants infected by PvWA-U from the United States. PvWA-U-, PvAT-F, and geographic undetermined PvU-UK isolates did not affect the growth of M-26 apple rootstock compared with PvAP-S, PvRO-S (both from Spain), and PvWA-A from Argentina isolates, which severely suppressed shoot growth of this rootstock. On M-26, Pf of the more parasitically fit isolates PvWA-A, PvAP-S, and PvRO-S were greater than those of nondamaging PvWA-U, PvAT-F, and PvU-UK isolates (>41.4 vs. <14.7 times the Pi). PvWA-U and PvAT-F reproduced more on GF-677 than on M-26 (>28.6 vs. <6.5 times the Pi). Isolate PvRO-S reproduced well and was quite destructive on both rootstocks. Results confirm the existence of strains with different damage potentials among geographically separated populations of P. vulnus 
650 4 |a Journal Article 
650 4 |a Malus silvestris M-26 
650 4 |a Pratylenchus vulnus 
650 4 |a Prunus persica × P. amygdalus GF-677 
650 4 |a host response variability 
650 4 |a nematode reproduction 
650 4 |a root-lesion nematode 
700 1 |a Fernández, C  |e verfasserin  |4 aut 
700 1 |a Esmenjaud, D  |e verfasserin  |4 aut 
700 1 |a Doucet, M  |e verfasserin  |4 aut 
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