Effect of cluster tightness on Botrytis bunch rot in six Chardonnay clones
Effect of cluster tightness on Botrytis bunch rot in six Chardonnay clones
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DOI：
10.1094/pdis.1998.82.1.107
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发表时间：
1998-01-01
期刊：
影响因子：
4.5
通讯作者：
Rademacher, MR
中科院分区：
文献类型：
--
作者：
Vail, ME;Wolpert, JA;Rademacher, MR
在两个试验中，每个试验中测量了六个霞多丽克隆的簇紧密度并评估了灰霉病菌串腐病，其中一个是甘蔗修剪的，另一个是短枝修剪的。在这两个地点，加州大学 (UC) 基金会植物材料服务 (FPMS) 克隆 4 最紧凑，FPMS 15 最不紧凑 (P < 0.01)。通过 UC 硬度测试仪方法测量的六个克隆之间的簇紧密度范围为克隆 15 的 0.0028 牛顿 (N) 到克隆 4 的 0.0112 N。簇紧密度与簇重量呈正相关。甘蔗修剪试验中的灰霉病菌丛腐病的发展比短枝修剪试验中的要大。在甘蔗修剪试验中，FPMS 16 的发病率最高（81.5%），克隆 15 的发病率最低（44.5%；P < 0.025），而疾病严重程度没有显着差异。在修剪试验中，发生率和严重程度都不显着。克隆 15 是簇最不紧密的克隆，其疾病严重程度最低。
Cluster tightness was measured and Botrytis bunch rot was evaluated for six Chardonnay clones in each of two trials, one cane-pruned and the other spur-pruned. In both locations, University of California (UC) Foundation Plant Materials Service (FPMS) clone 4 was most compact and FPMS 15 was the least compact (P < 0.01). Cluster tightness among the six clones, measured by the UC Firmness Tester Method, ranged from 0.0028 newtons (N) for clone 15 to 0.0112 N for clone 4. Cluster tightness was positively correlated with cluster weight. Botrytis bunch rot development was greater in the cane-pruned trial than in the spur-pruned trial. In the cane-pruned trial, disease incidence was greatest in FPMS 16 (81.5%) and least in clone 15 (44.5%; P < 0.025), while disease severity did not differ significantly. Neither incidence nor severity were significant in the spur-pruned trial. Clone 15, the clone with the least compact clusters, had the lowest disease severity levels.