华北农学报Issue(2)：132-139,8.DOI:10.7668/hbnxb.2015.02.024
四倍体小麦矮秆基因的赤霉素敏感性及对农艺性状的影响
Gibberellin Sensitivity of the Rht Genes in Tetraploid Wheat and Effects on Agronomic Traits
摘要
Abstract
Understanding the gibberellin sensitivity of the Rht genes Rht14,Rht16 and Rht18 in tetraploid wheat and the effects on agronomic traits are crucial for the proper utilization of these Rht genes in yield improve-ment of wheat. Five cultivars,namely,the tetraploid wheat near isogenic lines of ANW16D,ANW16F and ANW16G which contains Rht14,Rht16 and Rht18 gene,respectively,the recurrent parent LD222 and hexaploid wheat Chi-nese spring were served as materials in present studies. The heights of five cultivars before and after GA 3 treatment were measured respectively to study the gibberellin response type. At the mature period,some main agronomic traits,such as plant height,main spike length,the first internode length under main spike,internode of epidermal cells,grain epidermal cells and grain volume were measured to acquaint the effects of Rht14,Rht16 and Rht18 on them. Results indicated that ANW16D,ANW16F and ANW16G were GA-sensitive,and their sensitivity order was Chinese spring<ANW16G <ANW16F <ANW16D <LD222. 10 -4 mol/L GA3 was the best concentration level to spray with dwarf cultivars,which can restore the plant height to the normal control LD222′s height. Analysis of these agronomic traits showed that the most essential reason that Rht14,Rht16 and Rht18 reduced plant height was short-ening the first internode epidermal cell length,and the reducing effect order was Rht18 <Rht16 <Rht14. But the three Rht genes did not affect the seed size while minimizing the height.关键词
四倍体小麦/矮秆基因/农艺性状/赤霉素敏感性Key words
Tetraploid wheat/Rht genes/Agronomic traits/Gibberellin sensitivity分类
农业科技引用本文复制引用
王清海,杨在君,魏淑红,廖明莉,苏瑾,杨宇凤,杨会,王育伟,彭正松..四倍体小麦矮秆基因的赤霉素敏感性及对农艺性状的影响[J].华北农学报,2015,(2):132-139,8.基金项目
国家自然科学基金项目（31301319）；教育部重点项目（211164）；西华师范大学大学生科技创新基金项目 （）
