以天水市农业科学研究所选育的天选系列54份冬小麦新品系为材料，研究了产量和品质性状及其相互间的关系。结果表明:穗粒数与产量极显著相关，提高冬小麦产量应从增加穗粒数入手。冬小麦新品系的蛋白质含量和沉降值普遍较高，籽粒产量与蛋白质、湿面筋含量和沉降值呈显著负相关，与其他品质性状相关不显著，提高产量可能会使品质变劣，高产与优质较难同步改良。因此，协调好穗粒数与蛋白质含量、湿面筋含量和沉降值间的关系，以增加穗粒数为切入点，可能会在获得高产的同时品质也能达到较高水平。

Using 54 new winter wheat lines selected by Tianshui Institute of Agricultural Sciences as materials， the relationship between yield and quality traits was studied. The results showed that there was a significant correlation between grain number per ear and grain yield. The protein content and sedimentation value of new winter wheat lines are generally higher， and the grain yield is significantly negatively correlated with protein， wet gluten content and sedimentation value， but not significantly correlated with other quality traits. Improving yield may deteriorate quality， and it is difficult to improve yield and quality simultaneously. Therefore， the relationship between spike grain number and protein content， wet gluten content and sedimentation value should be coordinated， and increasing spike grain number should be taken as the entry point， to possibly achieve high yield and high quality at the same time.

S512.1

甘肃省重大专项(17ZD2NA016)，甘肃省现代农业产业技术体系“陇南抗锈优质冬小麦育种”(GARS-01-03)，天水市科技支撑计划项目。