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对辽宁省2002年和2003年新育成的中熟水稻品种(系)的品质性状进行分析,结果表明:不同品质性状间的变异系数存在着很大的差异。在碾磨品质性状中,整米率变异系数最大;外观品质性状中,垩白率、垩白度变异系数最大;在蒸煮及食味品质性状中,透明度变异系数最大。糙米率和精米率相关系数最大,达0.9017;垩白率与垩白度、直链淀粉与碱消值呈极显著正相关。影响辽宁省中熟稻米品质的主要因素是外观品质,改良外观品质成为辽宁省今后中熟水稻品质改良的主要目标。
The quality traits of mid-ripe rice cultivars (lines) newly bred in Liaoning Province in 2002 and 2003 were analyzed. The results showed that there were great differences in the coefficient of variation among different quality traits. Among milled quality traits, the coefficient of variation of whole rice rate was the largest. Among the quality traits of appearance, the coefficient of variation of chalky rice rate and chalkiness was the largest. Among the cooking and eating quality traits, the coefficient of variation of transparency was the largest. The correlation coefficient between brown rice rate and milled rice rate was the highest, reaching 0.9017. There was a significant positive correlation between chalkiness and chalkiness, amylose and alkali consumption. The main factors that affect the quality of middle-aged rice in Liaoning Province are the appearance quality and the improved appearance quality, which have become the main objectives of the quality improvement of medium-maturity rice in Liaoning Province in the future.