COMPARISON OF TIPBURN SUSCEPTIBILITY IN LETTUCE UNDER FIELD AND GLASSHOUSE CONDITIONS
COMPARISON OF TIPBURN SUSCEPTIBILITY IN LETTUCE UNDER FIELD AND GLASSHOUSE CONDITIONS
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DOI：
10.1080/00221589.1976.11514671
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发表时间：
1976-01-01
期刊：
影响因子：
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通讯作者：
MCKEE, JMT
中科院分区：
文献类型：
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作者：
COX, EF;MCKEE, JMT
在1973年和1974年期间，在田间对8个莴苣品种进行了7次梢烧敏感性试验。其中四个品种Borough Wonder、Cobham绿色、改良Lobjoits绿色和Avon Crisp受尖烧病严重影响，而Avon Defiance、五大湖659、Little Gem和Webbs Wonderful几乎没有这种疾病。但结果表明，只有五大湖659和博罗旺德在温室和田间条件下的反应相似。在其他品种的Tipburn的敏感性，确定在温室条件下的幼苗，不一定匹配的领域，相应的敏感性，直到负责这种差异的因素已被确定，温室筛选是不太可能是有用的育种目的。目前唯一切实可行的解决方法似乎是只播种那些在田间试验中表现出相对抗性的品种，特别是那些计划在烧心通常最具破坏性的时候成熟的作物。
Eight lettuce cultivars have been tested for susceptibility to tipburn in the field on seven occasions during 1973 and 1974. Four of these cultivars, Borough Wonder, Cobham Green, Improved Lobjoits Green and Avon Crisp were badly affected by tipburn, whilst Avon Defiance, Great Lakes 659, Little Gem and Webbs Wonderful were virtually free of the disorder.A method for inducing tipburn in young plants in the glasshouse is described, but it is shown that only Great Lakes 659 and Borough Wonder responded similarly under both glasshouse and field conditions. Tipburn susceptibility in the other cultivars, as determined in young plants under glasshouse conditions, is not necessarily matched by a corresponding susceptibility in the field and, until the factors responsible for this discrepancy have been identified, glasshouse screening is unlikely to be useful for breeding purposes. The only immediate practical solution to the tipburn problem would appear to be to sow only those cultivars that have been shown in field experiments to be relatively resistant, especially for crops planned to mature at a time when tipburn is usually most damaging.