Morphological,Biochemical and Genetic Analysis of a Brittle Stalk Mutant of Maize Inserted by Mutator

作     者：FU Xue-qian FENG Jing YU Bin GAO You-jun ZHENG Yong-lian YUE Bing 

作者机构：National Key Laboratory of Crop Genetic Improvement/Huazhong Agricultural University Biomass and Bioenergy Research CentreHuazhong Agricultural University 

出 版 物：《Journal of Integrative Agriculture》 (农业科学学报（英文版）)

年 卷 期：2013年第12卷第1期

页      面：12-18页

核心收录：

学科分类：09[农学] 0901[农学-作物学] 

基　　金：supported by the National High-Tech R&D Program of China(2006AA10A106) 

主　　题：Mutator cellulose brittle stalk mutant cell wall mechanical strength 

摘      要：Mutants on stalk strength are essential materials for the studies on the formation of plant cell *** this study,a brittle stalk mutant of maize,designated as Bk-x,was screened from a Mutator inserted mutant *** the germination and early seedling stage,the mutant plants were indistinguishable from the normal ***,all of the plant organs were brittle after the 5th-leaf stage and remained brittle throughout the rest of the growing *** observation showed that the cell wall in vascular bundle sheath of Bk-x was thinner than that in normal *** leaf mechanical strength in Bk-x was 77.9% of that in normal plants growing at Xishuangbanna（BN）,Yunnan province and that was 61.7% in Wuhan（WH）,Hubei Province,*** proportion of cellulose was 12.3% in Bk-x,which was significantly lower than that in normal plants（26.7%）,while the soluble sugar content was 36.1% in Bk-x,which is significantly higher than that in normal plants（12.4%）.Genetic analysis using two F 2 populations and one F 2：3 families demonstrated that the trait of brittle stalk is controlled by a single recessive gene.