不同谷子品种在陕北旱区的农艺性状与适应性分析OA

[Objective]To select millet varieties with favorable agronomic traits and stronger adaptability,providing theoretical references for millet production in the dryland region of northern Shaanxi.[Methods]Over three consecutive years(2022-2024),the growth period and morphological characteristics of 20 millet varieties were observed,their agronomic traits were subjected to variation analysis,correlation analysis,and principal component analysis,and the adaptability was evaluated using the membership functions.[Results]Significant differences were observed in the growth periods of the 20 millet varieties,with the growth days ranging from 111 to 145 d.In the variance analysis,the coefficient of variation for 1 000-grain weight was the smallest(5.19%),while the coefficient of variation for yield was the largest(37.70%).The correlation analysis revealed that yield was significantly positively correlated with panicle length,grain weight per panicle,and single panicle weight(P＜0.05);grain weight per panicle showed significant positive correlations with panicle length and panicle diameter(P＜0.05);single panicle weight was significantly positively correlated with panicle length,panicle diameter,and grain weight per panicle(P＜0.05);the 1 000-grain weight was significantly positively correlated with grain weight per panicle and single panicle weight(P＜0.05).In the principal component analysis,the cumulative contribution rate of the first two principal components was 70.75%,with yield and panicle traits having the highest effect.The membership function evaluation results indicated that the varieties Liangyouzhonggu No.5,Chigu No.16,Jinqiang,Jingu No.60,Aogu No.8,Jingu No.59,Longzhaojiugu,and Shipaogu had strong adaptability.[Conclusion]The comprehensive evaluation selected eight varieties:Liangyouzhonggu No.5,Chigu No.16,Jinqiang,Jingu No.60,Aogu No.8,Jingu No.59,Longzhaojiugu,and Shipaogu,which are suitable for cultivation in the dryland region of northern Shaanxi.