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首页> 外文期刊>Canadian Journal of Plant Science >Kernel colour changes associated with field weathering of spring wheat.
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Kernel colour changes associated with field weathering of spring wheat.

机译：与春小麦田间风化有关的籽粒颜色变化。

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The Canadian wheat-grading system is based on visual assessment to estimate end-use quality, both for assignment to classes and to grades within classes. Extensive training and experience are required to accurately interpret visual indicators of quality. Therefore, breeding programmes are attempting to develop instrumental techniques to objectively measure visual characteristics of potential new cultivars. This research examined colour changes associated with field weathering of wheat cultivars from the Canada Western Red Spring, Canada Western Amber Durum, and Canada Prairie Spring Red and White classes of wheat, as measured with a portable colorimeter. The class means exhibited colour differences, although the large variability within classes suggests that, used in isolation, colour measurements would not be a satisfactory means of identifying the class of individual samples. Weathering caused an increase in L* (lightness), a decrease in a* (redness) and a slight increase in b* (yellowness), and the effects were similar for all classes. Severe weathering caused loss of vitreousness in addition to bleaching, and the colour measurements reflect the integrated colour changes associated with both effects. Within each class, although there were cultivar differences for colour, the cultivars responded similarly to weathering, suggesting that breeders should simply select lines which exhibit intense, desirable colour prior to weathering.
机译：加拿大小麦分级系统基于目测评估，以评估最终使用质量，无论是按等级分配还是按等级划分。需要大量的培训和经验，才能正确解释视觉质量指标。因此，育种计划正在尝试开发仪器技术来客观地测量潜在新品种的视觉特征。这项研究研究了用便携式色度计测量的与加拿大西部红春小麦，加拿大西部琥珀色杜伦小麦和加拿大草原春红白小麦品种的田间风化相关的颜色变化。该类别表示存在色差，尽管类别内的较大差异表明，单独使用颜色测量不是识别单个样品类别的令人满意的手段。风化导致L *（亮度）增加，a *（红色）减少和b *（黄色）略有增加，并且所有类别的影响都相似。严重的风化除漂白外还导致玻璃体的损失，并且颜色测量值反映了与两种效果相关的综合颜色变化。在每个类别中，尽管颜色有不同的品种，但品种对风化的反应相似，这表明育种者应在风化之前简单地选择表现出强烈期望颜色的品系。

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