小麦茎秆木质素代谢及其及抗倒性的关系.pdf

作物学报 ACTA AGRONOMICA SINICA 2011, 37(9): 16161622 /zwxb/ ISSN 0496-3490; CODEN TSHPA9 E-mail: xbzw@ DOI: 10.3724/SP.J.1006.2011.01616 小麦茎秆木质素代谢及其与抗倒性的关系 * 陈晓光 史春余 尹燕枰 王振林 石玉华 彭佃亮 倪英丽 蔡 铁 / , 271018 : 6 , (PAL) (TAL)(CAD)4-: CoA (4CL) , (20 22), , PALTALCAD 4CL , (r = 0.83, P0.05); (r = 0.86, P0.05); PALTAL CAD (r =0.78, 0.77, 0.85, P0.05), 4CL (r =0.39, P0.05) , PAL CAD , : ; ; ; ; Relationship between Lignin Metabolism and Lodging Resistance in Wheat * CHEN Xiao-Guang, SHI Chun-Yu, YIN Yan-Ping, WANG Zhen-Lin , SHI Yu-Hua, PENG Dian-Liang, NI Ying-Li, and CAI Tie National Key Laboratory of Biology / Agronomy College, Shandong Agricultural University, Tai’an 271018, China Abstract: As a component of cell wall, lignin is believed to be relevant to mechanical intensity of culm. In this study, we investi- gated the dynamic changes of lignin content and activities of four enzymes involved in lignin metabolism in culm as well as the snapping resistance and lodging index of wheat (Tritcum aestivum L.) to disclose the relationship between lignin content and lodging resistance. The lignin content and activities of phenylalanine ammonia-lyase (PAL), tyrosine ammonia-lyase (TAL), cin- namyl alcohol dehydrogenase (CAD), and 4-coumarate: CoA ligase (4CL) were tested with the second internode of six cultivars with different lodging r