不同倒伏性燕麥莖稈強(qiáng)度及其木質(zhì)素合成基因表達(dá)特點(diǎn)

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中圖分類號：S544.9 文獻(xiàn)標(biāo)識碼：A 文章編號：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

普通栽培燕麥（AvenasativaL.）為禾本科（Gramineae）燕麥屬（Avena）一年生草本植物，也是一種糧飼兩用型作物，在全球5大洲約70個(gè)國家與地區(qū)都有廣泛種植1，2023年全國燕麥種植面積超90萬 hm2 ，產(chǎn)量突破290萬t2。（剩余13366字）