Fuchs E, Grüntzig M, Kegler H
Martin-Luther-University Halle-Wittenberg, Institute of Plant Breeding and Plant Protection, Germany.
Acta Virol. 1998 Sep;42(4):222-5.
In our three-year investigation, 164 apricot trees of different old German varieties cultivated in the Mansfelder Land region were tested for the plum pox virus (PPV) resistance by double grafting in greenhouse conditions using an isolate of PPV D strain from our region. We selected 25 genotypes with quantitative resistance and two with immunity. The first results of field trials are comparable with those from greenhouse. With cvs. Virosia and Brevira, two local quantitatively resistant varieties will be available from autumn 1998. The origin of both trees, which were found to be immune, is still unclear. They will be used for propagation only after the variety identification.
在我们为期三年的调查中，在曼斯费尔德地区种植的164棵不同古老德国品种的杏树，于温室条件下通过双重嫁接，使用来自我们地区的李痘病毒（PPV）D株分离物，对其抗李痘病毒（PPV）能力进行了测试。我们挑选出25个具有定量抗性的基因型和2个具有免疫性的基因型。田间试验的初步结果与温室试验结果相当。对于品种Virosia和Brevira，从1998年秋季起将有两个当地具有定量抗性的品种可供使用。发现具有免疫性的这两棵树的来源仍不清楚。只有在品种鉴定之后，它们才会用于繁殖。
