北方主产区谷子主要性状变化趋势与分析OA

In order to better understand the main agronomic traits,quality traits and disease resistance of millet va-rieties in the northern main production areas(North China,Northeast China,Northwest China),and to further improve the breeding level of millet,the 11 agronomic traits,4 quality traits and 3 major diseases'resistance of the millet vari-eties registered from 2017 to 2023 were analyzed.The results showed that the plant height of millet showed a down-ward trend,and the selected seeds tended to be varieties that were easy to shell;the hectare yield was significantly positively correlated with grain mass per spike in Northeast China;the yield per hectare is highly significantly posi-tively correlated with the thousand-grain weight,and the crude protein content is significantly positively correlated with the lysine content;the grain quality per spike in North China was significantly negatively correlated with the thousand-grain weight;the grain length per spike in Northwest China was extremely significantly positively correlated with the thousand-grain weight and the crude protein content showed a downward trend;the lysine content of millet in North China showed an upward trend;the per-hectare yield in Northeast China was extremely significantly negatively corre-lated with the stripe rust disease,the crude protein content of millet in North China was significantly negatively corre-lated with the stripe rust disease,and the stripe blight disease was extremely significantly positively correlated with the stripe rust disease in North China;the crude protein content of millet in Northwest China was significantly negatively correlated with the millet blast;the susceptibility to disease of millet in Northeast China mainly affected the yield,while in North China and Northwest China,the susceptibility of millet to disease caused serious harm to the quality;the spike shape and spike density of millet were all related to the climatic conditions of the region where they were lo-cated.Therefore,in the future breeding of new millet varieties,it is necessary to improve the yield and nutritional qual-ity of millet while also taking into account the improvement of the disease resistance level,in order to select new millet varieties with high yield,rich nutrition,good lodging resistance and good disease resistance.