关键词: 面包小麦, 四川地方品种, 农艺性状, 品质性状, 相关分析

Abstract: The 6 agronomic characters and 19 quality indexes of 67 wheat landraces in Sichuan were detected in order to select indexes of agronomic and quality characters for breeding of high yield and good quality. The correlation analysis indicates spike number per plant are significantly positively correlated with protein content, dry and wet gluten content, and sedimentation value. The 1000-grain weight is in significantly negative correlation with protein content, dry and wet gluten content, sedimentation values and stability time. Whereas it is significantly positively correlated with crude starch, and amylopectin content. Grains per spike and a few of quality indexes are significant. Therefore, on breeding it is appropriate to select spike number per plant, protein content and sedimentation value as the key indexes. On level of agronomic characters and protein, starch and other quality indexes, the 67 Sichuan wheat landraces were clustered into four groups, among which the group Ⅳ including 10 landraces were better. Their plant height is higher, spike number per plant is the highest, protein quality was the best, 1000-grain weight and starch content are lower. Based on the agronomic and dough quality, the 67 Sichuan wheat landraces are also clustered into four groups, among which 12 landraces in the group Ⅲ are the better, because their spike number per plant and grain weight per plant are the highest, stability time and farinogram quality number are higher.

Key words: bread wheat, Sichuan landraces, agronomic characters, quality character, correlation analysis