华南农业大学学报2018，Vol.39Issue(2)：34-39,6.DOI:10.7671/j.issn.1001-411X.2018.02.006
水稻不育系'培矮64S'空间搭载的"双低"选育与应用
Dual-low breeding and application of two-line rice 'Peiai 64S' after space flight
摘要
Abstract
[Objective]To solve the problems of thermo-photo-sensitive genic male sterile (PTGMS) rice 'Peiai 64S' caused by rising critical sterility-inducing temperature (CSIT) and higher amylose content in practical production, and breed new male sterile line.[Method]'Peiai 64S' seeds, which were carried by the agricultural satellite named as "practical #8", were planted, tracked and directionally selected. The steady sterile line with low amylose content was obtained. In the mean time, according to YUAN Longping's method for the purification and propagation of PTGMS lines, CSIT was selected and identified by adding pressure.[Result]The mutant plants with low amylose content (about 8.69％) and low CSIT (below 23.0℃) were found. One new mutant line with the dual-low characteristics was identified and named as 'Hang 17S'. The plant height of 'Hang 17S' was 79.62cm, the flag leaf length and width were 32.54 and 1.82 cm respectively, the panicle number per plant was 11.4, the panicle length was 22.01 cm and the grain number per panicle was about 181. Except for the flag leaf width, there was no significant difference for most of the traits compared with its wild type 'Peiai 64S'.[Conclusion]The newly bred 'Hang 17S' is much like its wild type 'Peiai 64S' for most of the traits except for the dual-low characteristics. And it retains the characteristics of good outcrossing rate and strong combining ability of 'Peiai 64S'. 'Hang 17S' was appraised by the government committee and commercially released in 2015.关键词
水稻/光温敏核不育系/空间诱变/直链淀粉含量/不育起点温度/遗传漂移Key words
rice (Oryza sativa L.)/PTGMS line/space mutation/amylose content/critical sterility-inducing temperature/genetic drift分类
农业科技引用本文复制引用
黄明,陈志强,陈淳,章旭光,王慧,郭涛,刘永柱,肖武名,赵林,邹永健..水稻不育系'培矮64S'空间搭载的"双低"选育与应用[J].华南农业大学学报,2018,39(2):34-39,6.基金项目
广东省科技发展基金(2017B020201013) （2017B020201013）
广州市科技计划项目(2014J4500030) （2014J4500030）
亚热带农业生物资源保护与利用国家重点实验室开放课题(SKLCUSA-b201504) （SKLCUSA-b201504）
