云南立体气候条件下软米光温敏核不育系云粳202S的育性研究  

Fertility of Photo-thermo Sensitive Genic Male Sterile Line Yunjing 202S of Soft Rice Under Three-dimensional Climate in Yunnan Province

作　　者：张云[1] 涂建[2] 陈忆昆[2] 肖素勤[1] 辜琼瑶[2] 李华慧[2] 黄平[2] 张敦宇[1] 殷富有[1] 程在全[1] 刘晓利[2] 奎丽梅[2] ZHANG Yun;TU Jian;CHEN Yi-kun;XIAO Su-qin;GU Qiong-yao;LI Hua-hui;HUANG Ping;ZHANG Dun-yu;YIN Fu-you;CHENG Zai-quan;LIU Xiao-li;KUI Li-mei(Biotechnologa and Germplasm Resources Institute,Yunnan Academy of Agriculturat Science,Yunnan Kunming 650205,China;Food Crops Research Institute,Yunnan Academy of Agriculturat Sciences,Yunnan Kunming 650205,China)

机构地区：[1]云南省农业科学院生物技术与种质资源研究所,云南昆明650205 [2]云南省农业科学院粮食作物研究所,云南昆明650205

出　　处：《西南农业学报》2021年第5期921-925,共5页Southwest China Journal of Agricultural Sciences

基　　金：云南省自然科学基金项目(2018FB062);云南省农业联合面上项目(2018FG00-016);国家现代农业产业技术体系建设专项资金(CARS-01-81)。

摘　　要：【目的】云粳202S是云南省育成的第一个具有软米背景的高原粳型光温敏核不育系。研究云粳202S的育性,筛选适宜制种和繁种的最佳条件,这对促进软米两系杂交稻的发展具有重要的意义。【方法】利用云南独特的立体气候优势,在不同海拔条件下采用多点分期播种的试验方法。【结果】海拔、播种日期以及两者互作对云粳202S的育性均有极显著的影响(P<0.01)。【结论】从云粳202S育性转换的规律可知,在低海拔条件下稳定不育期可以生产杂交种子,在中海拔条件下对该核不育系进行繁种可调节海拔和播种日期选择最佳繁殖条件,在相对低的海拔下可适当推迟播种,而在相对高的海拔条件下可适当提前播种。【Objective】Yunjing 202 s is the first plateau japonica-type photo-thermo sensitive genic male sterile line with soft rice background bred in Yunnan province.It was of great significance to study the fertility of Yunjing 202 s and to screen the best conditions for seed production and breeding for promoting the development of soft rice two-line hybrid rice.【Method】Taking advantage of Yunnan’s unique three-dimensional climate,the experiment method of multi-point sowing by stages was adopted at different altitudes.【Result】The results showed that altitude,sowing date and interaction of the two all had extremely significant effects on the fertility of Yunjing 202 S(P<0.01).【Conclusion】According to the rule of fertility conversion of Yunjing 202 S,the hybrid seeds could be produced in the stable sterile period at low altitude conditions.When breeding this photo-thermal sensitive genic male sterile line at medium altitude conditions,the optimal breeding conditions could be selected by adjusting the altitude and sowing date.At relatively low altitude,sowing could be postponed properly,and at relatively high altitude,sowing could be advanced properly.

关 键 词：云粳202S 软米光温敏核不育系 海拔 播种日期 育性 

分 类 号：S511[农业科学—作物学]