不同倒伏性燕麦茎秆强度及其木质素合成基因表达特点

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中图分类号：S544.9 文献标识码：A 文章编号：1007-0435（2025）05-1363-09

Abstract：In this study，two oat varieties with different lodging resistance were taken as materials，the regulation of lignin biosynthesis on oat stem strength was investigated by analyzing the differences of stem strength traits and lignin synthesis-related gene expression levels，which provided references for genetic improvement of oat stem strength and lodging resistance breeding.The results showed as follows：there were significant differences .-0.05 ） in stem strength related traits among different lodging resistant varieties，and there was a significant positive correlation （ P<0.01 ）between stem strength and lignin content of the basal second internode， and the lignin content of the basal second internode of lodging resistant varieties was significantly higher （ P< O.05） than lodging senstive varieties.The expression levels of the relate enzyme genes of 9 lignin synthesis pathways were observed in filling stage < dough stage < milking stage，and lodging sensitive varieties

Key Words：Oat;Stem strength;Lignin synthesis;Gene expression;Lodging resistance

普通栽培燕麦（AvenasativaL.）为禾本科（Gramineae）燕麦属（Avena）一年生草本植物，也是一种粮饲两用型作物，在全球5大洲约70个国家与地区都有广泛种植1，2023年全国燕麦种植面积超90万 hm2 ，产量突破290万t2。（剩余13366字）