有色大麦种子种皮颜色与种子活力相关性分析

为研究有色大麦种质物理指标与种子活力的关系,采用发芽试验和计算机图像识别相结合的方法,通过测定44份有色大麦种子萌发期生理指标和种子物理指标,用相关性分析、主成分分析和逐步回归分析方法,研究有色大麦种子物理指标与种子活力之间的关系。结果表明:种子粒长、粒宽、粒厚和千粒重这些物理指标与有色大麦种子活力关系不明显,种皮颜色Y值(黄色)与有色大麦种子活力呈正相关关系,其余各颜色指标均与有色大麦种子活力呈负相关关系;逐步回归分析表明,种皮颜色对有色大麦种子活力的影响大于种子粒长、粒宽和粒厚,影响有色大麦种子活力的主要颜色指标是H(色相)值和a(从洋红色至绿色的范围)值,且成负相关;此外,IOD(光密度)值与粒长和粒宽达极显著正相关关系。

Study on the correlation seed coat colour and seed vigor of colored barley

To study the relationship between the physical characteristics and seed vigor of barley germplasm,a total of 44 colored barley germplasms were taken as study object.Combination of germination test and computer image recognition was used to determine the relationship between seed physical characteristics and seed vigor of colored barley by measuring the germination characteristics and seed physiological characteristics of barley seeds.Correlation analysis,principal component analysis and stepwise regression analysis were conducted.The results showed that:The germplasm vigor of colored barley was positively correlated with the Y (Yellow) value of seed coat color,and the other color characteristics were negatively correlated with the germplasm of colored barley.Stepwise regression analysis showed that the effect of seed coat color on the vigor of colored barley germplasm was greater than that of seed physical characteristics,grain length and grain thickness.The seed physical characteristics showed that the grain length,grain width,grain thickness and 1 000-grain weight were not significantly related to the seed vigor of colored barley,and the main color characteristics affecting the vigor of colored barley germplasm are H (hues) value and a (range from magenta to green),and are negatively correlated;In addition,the Integrated optical density (IOD) value is extremely positively correlated with the grain length and the grain width.