• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Plant Disease >Rootstock Effects on Almond Leaf Scorch Disease Incidence and Severity
【24h】

Rootstock Effects on Almond Leaf Scorch Disease Incidence and Severity

机译：砧木对杏仁叶片焦枯病发病率和严重程度的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A 5-year field study was conducted to evaluate effects of duration and exclusion of Xylella fastidiosa infections on young almond tree performance and their links to tree vigor. 'Nemaguard,' Okinawa, 'Nonpareil,' and Y119 were used as rootstocks for almond scion 'Sonora.' Among X. fastidiosa-infected trees, there was significant etiological heterogeneity with i) absence of leaf scorching symptoms in the presence of reduced growth, presence of leaf scorching symptoms in the absence of reduced growth, and ii) severe leaf scorching and reduced growth. Trunk cross sectional areas of X. fastidiosa-infected trees grafted on 'Nemaguard' and 'Nonpareil' rootstocks were significantly smaller than noninfected trees, whereas trunk size of trees grafted on 'Okinawa' and Y119 was not affected by infection status. Severity of leaf scorching symptoms was highest on trees grafted on 'Nonpareil' rootstock, intermediate on 'Okinawa' and Y119, and lowest on Vemaguard.' X. fastidiosa infections and seasonal leaf scorching symptoms persisted on most inoculated trees throughout the study, except on trees grafted on 'Nemaguard' that manifested complete leaf scorching symptom remission and apparent elimination of the pathogen after the second year. Results indicate that depending on rootstock type X. fastidiosa can affect trunk size in a relatively short period and/or persist for years as trees grow.
机译：进行了为期5年的野外研究，以评估持续时间和排除木糖对小杏仁树性能及其与树活力的关系的影响。 'Nemaguard'，冲绳，'Nonpareil'和Y119被用作杏仁接穗'Sonora'的砧木。在X. fastidiosa感染的树木中，病原学存在显着异质性：i）在生长减少的情况下没有叶子焦烧症状，在生长减少的情况下没有叶子焦烧症状，ii）严重的叶子焦烧和生长减少。在'Nemaguard'和'Nonpareil'砧木上嫁接的X. fastidiosa感染树的树干横截面积明显小于未感染的树，而在'Okinawa'和Y119上嫁接的树木的树干尺寸不受感染状态的影响。嫁接在'Nonpareil'砧木上的树木的焦烧严重程度最高，在'Okinawa'和Y119上中等，在Vemaguard最低。在整个研究中，大多数接种的树上均持续存在X. fastidiosa感染和季节性结焦症状，但第二年后，嫁接在'Nemaguard'上的树表现出完全的结焦症状缓解并明显消除了病原体。结果表明，取决于砧木类型的X. fastidiosa可以在相对较短的时间内影响树干的大小和/或随着树木的生长而持续多年。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号