Sayler R J, Southwick S M, Yeager J T, Glozer K, Little E L, Kirkpatrick B C
Department of Plant Pathology, University of California, Davis 95616.
Department of Pomology, University of California, Davis.
Plant Dis. 2002 May;86(5):543-546. doi: 10.1094/PDIS.2002.86.5.543.
Bacterial canker is one of the most economically important diseases of stone fruit trees, including 'French' prune (Prunus domestica). Field trials were conducted to evaluate the effect of rootstock selection and budding height on the incidence and severity of bacterial canker in four orchards with low to high disease pressure. Treatments included French prune scions low-grafted on 'Lovell' peach (Prunus persica) rootstocks as well as Myrobalan 29C (Prunus cerasifera) plum rootstocks grafted at 15, 50, and 90 cm above the rootstock crown. Another treatment consisted of growing Myrobalan 29C plum rootstocks in the field for one growing season, then field-grafting French prune buds onto rootstock scaffolds. Lovell peach rootstock provided the greatest protection from bacterial canker as measured by disease incidence and tree mortality in all orchards. Field-budded rootstocks and rootstocks grafted at the highest budding height provided moderate levels of resistance to bacterial canker. These treatments reduced the incidence but not the severity of disease.
细菌性溃疡病是核果类果树（包括“法国”李（Prunus domestica））最具经济重要性的病害之一。在四个病害压力从低到高的果园进行了田间试验，以评估砧木选择和芽接高度对细菌性溃疡病发病率和严重程度的影响。处理包括低接在“洛弗尔”桃（Prunus persica）砧木上的法国李接穗，以及嫁接到砧木树冠上方15厘米、50厘米和90厘米处的樱桃李（Prunus cerasifera）砧木Myrobalan 29C。另一种处理方法是将Myrobalan 29C樱桃李砧木在田间种植一个生长季，然后将法国李芽嫁接到砧木主干上。在所有果园中，以发病率和树木死亡率衡量，洛弗尔桃砧木对细菌性溃疡病的防护效果最佳。田间芽接砧木和芽接高度最高的砧木对细菌性溃疡病有中等程度的抗性。这些处理降低了发病率，但没有降低病害的严重程度。
