水稻脆性突变体w7bc5的生物学特性研究  

Characterization of a brittle culm mutant w7bc5 in japonica rice

作　　者：陆荷微 刘斌美[2] 陶亮之[2] 叶亚峰[2] 吴振宇[1] 范爽[2] 吴跃进[2] 王钰[1] LU He-wei;LIU Bin-mei;TAO Liang-zhi;YE Ya-feng;WU Zhen-yu;FAN Shuang;WU Yue-jin;WANG Yu(School of Resources and Environmental Engineering,Anhui University,Hefei 230601;Institute of Technical Biology and Agricultural Engineering,Hefei Institute of Physical Science,Chinese Academy of Science,Hefei 230031,China)

机构地区：[1]安徽大学资源与环境工程学院,合肥230601 [2]中国科学院合肥物质科学研究院技术生物与农业工程研究所,合肥230031

出　　处：《生物学杂志》2018年第1期1-4,共4页Journal of Biology

基　　金：国家自然科学青年基金(31301297);中国科学院STS项目(KFJ-EW-STS-083)

摘　　要：w7bc5是重离子辐照诱变粳稻品种武运粳7号(wyj7)获得的一个脆性突变体。农艺性状分析发现,w7bc5突变体千粒重与结实率略有下降,其他农艺经济特征仍保持较好品质;茎秆抗折力比wyj7野生型下降29.8%,田间手折极易脆断;w7bc5突变体茎秆纤维素含量比wyj7野生型减少26.7%,半纤维素含量显著升高,叶片细胞壁主要成分含量的变化趋势与茎秆中的保持一致;抽穗期后w7bc5与wyj7茎秆中可溶性糖含量的差距逐渐拉大,从12.8mg/g增加到62.9 mg/g。A brittle culm mutant w7bc5 was obtained from japonica rice wyj7 by heavy ion irradiation.The fertility and thousand-seed weight of w7bc5 mutant reduced,while other agronomic characters changed slightly.The w7bc5 mutant showed 29.8%less breaking-resistant strength and 26.7%less cellulose content compared to wild type plant,while hemi-cellulose increased evidently,no significant difference has been found in contents of lignin and SiO 2.Results from analyzing soluble sugar contents of w7bc5 and wild type showed a 12.8 mg/g difference during heading stage,which further extended to 62.9 mg/g.

关 键 词：脆性突变体 细胞壁 纤维素 可溶性糖 

分 类 号：S511[农业科学—作物学]