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以2013—2015年116份春小麦种子样品为材料,应用Seed Identification软件并结合仪器和手工测定获得17个物理指标值(千粒重、宽度、长度、投影面积、厚度、比重、硬度、灰度值、RGB颜色模型中红色R、绿色G和蓝色B、Lab颜色模型中的亮度L、色彩通道a和色彩通道b、HSB颜色模型中的色相H、饱和度S和亮度B。利用主成分分析法和聚类分析法,在标准环境及3种逆境(盐胁迫、干旱胁迫和人工加速老化胁迫)下,探讨了春小麦种子物理指标与种子活力的关系。研究发现各培养环境下,种子活力与种子的千粒重、宽度、长度、投影面积、S和a有明显相关性。千粒重、宽度、长度、投影面积、S和a值较小的小粒种子比大粒种子表现出更高的活力。本研究结果表明:小粒种子较大粒种子有更强的耐逆境能力;千粒重、宽度、长度、投影面积、S和a可作为逆境萌发条件下高活力种子样品筛选的候选指标。
Using 116 seed samples of spring wheat from 2013 to 2015 as materials, Seed Identification software was used in combination with instrumentation and manual determination to obtain 17 physical index values (1000-grain weight, width, length, projection area, thickness, specific gravity, hardness, Color R, Green G, and Blue B in the color model, Brightness L in the Lab color model, Color channel a and Color channel b, Hue H in the HSB color model, Saturation S, and Brightness B. Using principal component analysis and Cluster analysis was used to investigate the relationship between seed physical indices and seed vigor under standard conditions and three adversities (salt stress, drought stress and artificial accelerated aging stress) .It was found that seed vigor and seed vigor Grain weight, width, length, area of projection, S and a were significantly correlated.The grain size with 1000-grain weight, width, length, projection area and S and a values were higher than those of large seeds.The results of this study showed that: Seedlings of larger seeds had stronger tolerance to stress than those of seeds. Grain weight, width, length, projected area, S and a could be used as high vigor seeds Screening of candidate indicators.