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首页> 美国卫生研究院文献>Journal of Nematology >Resistance to Ditylenchus africanus present in peanut breeding lines
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Resistance to Ditylenchus africanus present in peanut breeding lines

机译：花生育种系中对非洲Ditylenchus africanus的抗性

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摘要

Peanut is an important cash crop both for commercial and small-scale farmers in South Africa. The effect of Ditylenchus africanus on peanut is mainly qualitative, leading to downgrading of consignments. This nematode is difficult to control because of its high reproductive and damage potential. The objective of this study was to identify peanut genotypes with resistance to D. africanus that would also be sustainable under field conditions. Selected peanut genotypes were evaluated against D. africanus in microplot and field trials. The inbred lines PC254K1 and CG7 were confirmed to be resistant to D. africanus. The resistance expressed by these two genotypes was sustainable under field conditions. The breeding line PC287K5 maintained low nematode numbers in some trials, but its level of resistance was not as strong or as sustainable as that of PC254K1 or CG7. However, PC287K5 could still play an important role in the peanut industry where lower D. africanus populations occur.
机译：花生是南非商业和小规模农民的重要经济作物。非洲龙胆对花生的影响主要是定性的，导致寄售货物降级。由于该线虫具有很高的繁殖力和破坏力，因此很难控制。这项研究的目的是确定对非洲象鼻虫具有抗性的花生基因型，这在田间条件下也是可持续的。在微样图和田间试验中，针对花生毛病对选定的花生基因型进行了评估。证实自交系PC254K1和CG7对非洲D.africanus具有抗性。这两种基因型表达的抗性在田间条件下是可持续的。在某些试验中，品系PC287K5保持较低的线虫数量，但其抗性水平不如PC254K1或CG7强大或可持续。但是，PC287K5仍可在花生非洲种群较少的花生产业中发挥重要作用。

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