【摘要】 为进一步探究‘聊棉21号’棉花新品种的产量特征特性及增产突破点，以2018—2021年山东省棉花区域试验、生产试验数据为材料，试验品种为‘聊棉21号’，对照品种为‘鲁棉研28号’，利用主成分分析、通径分析方法，进行丰产性、稳产性及相关农艺性状进行分析。结果显示：‘聊棉21号’具有良好的丰产性、稳产性和适应度；皮棉产量与单株结铃数、霜前花率、单铃重、衣分呈显著正相关；主成分分析中提取了5个主成分，其累计贡献率为87.94%；通径分析表明‘聊棉21号’的皮棉产量按照贡献率大小依次为单株结铃数(0.583)、衣分(0.459)、单铃重(0.369)。研究表明，‘聊棉21号’是产量稳定、适应性强、品质优的棉花品种，具有良好的抗盐碱性，适宜在黄河流域特别是盐碱地大面积推广应用。更多还原

【Abstract】 The study aimed to explore the yield traits and identify key factors for increased production in the cotton cultivar‘Liaomian 21’. Based on the data of 2018 to 2021 regional tests, the high yield, stable yield and related agronomic characters of the variety were analyzed using principal component analysis and path analysis. The results showed that‘Liaomian 21’showed good high yield, stability and adaptability. Lint yield was significantly positively correlated with the number of bolls per plant, pre-frost flowering rate, single boll weight and lint percentage; 5 principal components were extracted from the principal component analysis, and their cumulative contribution rate was 87.94%; path analysis showed that the factors affected lint yield of‘Liaomian 21’were the number of bolls per plant(0.583), lint percentage(0.459), and single boll weight(0.369) in terms of contribution rate. Studies have shown that‘Liaomian 21’is a cotton variety with stable yield, strong adaptability and excellent quality. It has good salt resistance and is suitable for large-scale promotion and application in the Yellow River Basin, especially in saline-alkali land.更多还原