The effect of wood age on infection by Neonectria ditissima through artificial wounds on different apple cultivars
The effect of wood age on infection by Neonectria ditissima through artificial wounds on different apple cultivars
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DOI：
10.30843/nzpp.2017.70.34
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发表时间：
2017-01-01
影响因子：
--
通讯作者：
Jesson, L. K.
中科院分区：
文献类型：
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作者：
Amponsah, N. T.;Scheper, R. W. A.;Jesson, L. K.
苹果树的树龄可能会影响其对欧洲溃疡病（Neonectria ditissima）的敏感性。因此，我们对六个苹果品种（'Braeburn'、'Scilate'、'Fuji'、'Golden Delicious'、'Jonathan' 和 'Royal Gala'）的盆栽树进行了温室实验，将其嫁接到两种砧木（'M793' 和 'M9'）上，以研究 3、2 或 1 年生木材接种分生孢子后对发病率和疾病进展的影响。 N. ditissima。对“M793”品种的初步分析表明，木龄对发病率和病斑长度有显着影响，这与“M9”嫁接品种相似。与 2 年或 1 年树龄的木材相比，三年树龄的木材出现更多且更长的病变。观察到显着的品种效应，“Royal Gala”比其他测试品种产生更多的病斑。将超过一半的无症状伤口置于苹果汁改良水琼脂上进行病原体分离，产生了二蒂斯马氏菌。
The age of apple wood may affect its susceptibility to European canker (Neonectria ditissima). Therefore, a glasshouse experiment was conducted with potted trees of six apple cultivars ('Braeburn', 'Scilate', 'Fuji', 'Golden Delicious', 'Jonathan' and 'Royal Gala') grafted onto two rootstocks ('M793' and 'M9') to study the effect of 3-, 2- or 1-year-old wood on incidence and disease progression following inoculation with conidia of N. ditissima. Initial analyses of cultivars on 'M793' showed a significant wood age effect on disease incidence and lesion length, which was similar to cultivars grafted on 'M9'. Three-year-old wood developed more and longer lesions than either the 2- or the 1-year-old wood. A significant cultivar effect was observed with 'Royal Gala' developing more lesions than the other cultivars tested. More than half of asymptomatic wounds placed onto apple sap-amended water agar for pathogen isolation yielded N. ditissima.