The use of wavelength-selective plastic cladding materials in horticulture: Understanding of crop and fungal responses through the assessment of biological spectral weighting functions
The use of wavelength-selective plastic cladding materials in horticulture: Understanding of crop and fungal responses through the assessment of biological spectral weighting functions
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DOI：
10.1562/2004-12-06-ra-392
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发表时间：
2005-09-01
影响因子：
3.3
通讯作者：
Moore, JP
中科院分区：
文献类型：
--
作者：
Paul, ND;Jacobson, RJ;Moore, JP
植物对光谱质量的反应可以被利用来提供一系列农艺学上理想的保护作物终点。这可以使用具有特定光谱特性的塑料作为作物覆盖物来实现。我们研究了一系列作物对塑料的反应，这些塑料要么(a)与标准园艺覆盖物相比，增加了紫外线的透射，(b)减少了紫外线的透射，要么(c)增加了红(R)：远红（FR）辐射的比例。uv透明膜和R: FR增加膜都减少了叶面积和生物量，为化学生长调节剂提供了潜在的替代品。紫外线不透明的薄膜促进了作物的生长，虽然这可能对某些作物有用，但在质量方面，如色素沉着和味道方面，有一些权衡。紫外线操作也可能影响疾病控制。增强紫外辐射不仅能抑制葡萄灰霉病菌，还能抑制哈兹木霉。与葡萄芽孢杆菌不同，哈氏梭菌对UV-A辐射高度敏感。利用可选生物谱加权函数（BSWF）分析了这些真菌反应以及不同塑料处理下植物在生长室内和田间的生长反应。BSWF在评估园艺对紫外线修饰的一般反应模式中的作用也进行了讨论。
Plant responses to light spectral quality can be exploited to deliver a range of agronomically desirable end points in protected crops. This can be achieved using plastics with specific spectral properties as crop covers. We have studied the responses of a range of crops to plastics that have either (a) increased transmission of UV compared with standard horticultural covers, (b) decreased transmission of UV or (c) increased the ratio of red (R): far-red (FR) radiation. Both the UV-transparent and R: FR increasing films reduced leaf area and biomass, offering potential alternatives to chemical growth regulators. The UV-opaque film increased growth, but while this may be useful in some crops, there were trade-offs with elements of quality, such as pigmentation and taste. UV manipulation may also influence disease control. Increasing UV inhibited not only the pathogenic fungus Botrytis cinerea but also the disease biocontrol agent Trichoderma harzianum. Unlike B. cinerea, T. harzianum was highly sensitive to UV-A radiation. These fungal responses and those for plant growth in the growth room and the field under different plastics are analyzed in terms of alternative biological spectral weighting functions (BSWF). The role of BSWF in assessing general patterns of response to UV modification in horticulture is also discussed.