Problems and Strategies Associated with Long-term Use of Nematode Resistant Cultivars

Plant-parasitic nematodes are obligate parasites, and planting cultivars that are highly resistant to these organisms places extensive selection pressure on the target species and affects nontarget nematodes as well. Problems encountered with long-term planting of cultivars resistant to nematodes in...

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Veröffentlicht in:Journal of nematology. - 1969. - 24(1992), 2 vom: 15. Juni, Seite 228-33
1. Verfasser: Young, L D (VerfasserIn)
Format: Aufsatz
Sprache:English
Veröffentlicht: 1992
Zugriff auf das übergeordnete Werk:Journal of nematology
Schlagworte:Journal Article Globodera tabacum solanacearum Heterodera glycines M. incognita Meloidogyne arenaria management nematode resistance rotation
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245 1 0 |a Problems and Strategies Associated with Long-term Use of Nematode Resistant Cultivars 
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520 |a Plant-parasitic nematodes are obligate parasites, and planting cultivars that are highly resistant to these organisms places extensive selection pressure on the target species and affects nontarget nematodes as well. Problems encountered with long-term planting of cultivars resistant to nematodes include shifts in nematode races or species and the occurrence of multiple species of nematodes within the same field. These problems can be alleviated to some extent when crop management is used to lessen the selection pressure for change on the nematode populations. Race shifts within populations and possibly shifts between nematode species can be delayed by rotating susceptible cultivars and nonhost crops with resistant cultivars. Nematicides in conjunction with resistant cultivars may be used to limit damage by multiple species of nematodes. Some cultivars have resistance to multiple species of nematodes, but greatly increased research effort is needed in this area. More intensive plant breeding effort will be required to make nematode resistant cultivars competitive in quality and yield with more productive, susceptible cultivars 
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650 4 |a Globodera tabacum solanacearum 
650 4 |a Heterodera glycines 
650 4 |a M. incognita 
650 4 |a Meloidogyne arenaria 
650 4 |a management 
650 4 |a nematode 
650 4 |a resistance 
650 4 |a rotation 
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