Development of a platform for breeding by design of CMS lines based on anSSSL library in rice(Oryza sativaL.)
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- 英文论文题名：Development of a platform for breeding by design of CMS lines based on anSSSL library in rice(Oryza sativaL.)
- 论文作者：Ziju Dai ; Qing Lu ; Xin Luan ; Jian Cai ; Haitao Zhu ; Ziqiang Liu ; Ruizhen Zeng ; Zemin Zhang ; Shaokui Wang ; Lingjie Zheng ; Jialin Li ; Guiquan Zhang
- 英文论文作者：Ziju Dai ; Qing Lu ; Xin Luan ; Jian Cai ; Haitao Zhu ; Ziqiang Liu ; Ruizhen Zeng ; Zemin Zhang ; Shaokui Wang ; Lingjie Zheng ; Jialin Li ; Guiquan Zhang ; State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources ; South China Agricultural University
- 年：2014
- 作者机构：State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources,South China Agricultural University;
- 英文论文关键词：Single segment substitution line ; Cytoplasmic male sterility ; Breeding by design ; Rice
- 会议召开时间：2014-12-19
- 会议录名称：广东省遗传学会第九届代表大会暨学术研讨会论文及摘要汇编
- 英文会议录名称：Theses and Abstracts Compilation of 9th Conference on Genetics,Guangdong
- 语种：英文
- 分类号：S511
- 学会代码：GDKL
- 会议名称：广东省遗传学会第九届代表大会暨学术研讨会
- 会议地点：中国广东广州
- 主办单位：广东省遗传学会
- 学会名称：广东省科学技术协会科技交流部
- 页数：1
- 文件大小：66k
- 原文格式：O
- 会议级别：地方
摘要
Cytoplasmic male sterility(CMS) is an important foundation for heterosis utilization andexploited widely to hybrid seed production in rice.However,the traditional experiencedriven and labor-cost breeding style left little room for sustainable improvement ofhybrid rice.Development of molecular biology and genomics provides a chance toenhance hybrid rice breeding efficiency through breeding by design.In this study,aline H121 B with rj3 and rf4 genes from XieqingzaoB(XB) was developed in theHuajingxian74(HJX74) genetic background.Using H121 B as maintainer line,threeisonuclear alloplasmic CMS lines,W-H121 A,D-H121 A and Y-H121 A,with the wildabortive(WA),dwarf wild abortive(DA),and Yegong abortive(YA) types of CMScytoplasm,respectively,were developed.The H121 B maintainer line was thenimproved by a way of breeding by design.Three favorable alleles,gs3 for long grain,Wxlfor low amylose content,and OsMADSSO for early heading date,in the chromosomalsubstituted segments of single segment substitution lines(SSSLs) were selected fromthe SSSL library in the HJX74 genetic background,and were pyramided together inH121 B through marker-assisted selection(MAS).The new maintainer line,H131 B,showing the phenotypes of longer in grain length,lower in amylose content,and earlierin heading date than those in H121 B,achieved the breeding goal designed.UsingH131 B as maintainer line,three new isonuclear alloplasmic CMS lines,W-H131 A,DH131A and Y-H131 A,were developed.Those results indicate that breeding by designin rice can be conducted under the platform of the HJX74 SSSL library.Establishmentof the platform for breeding by design of CMS lines will be helpful for sustainableimprovement of CMS lines in hybrid rice development.
Cytoplasmic male sterility(CMS) is an important foundation for heterosis utilization andexploited widely to hybrid seed production in rice.However,the traditional experiencedriven and labor-cost breeding style left little room for sustainable improvement ofhybrid rice.Development of molecular biology and genomics provides a chance toenhance hybrid rice breeding efficiency through breeding by design.In this study,aline H121 B with rj3 and rf4 genes from XieqingzaoB(XB) was developed in theHuajingxian74(HJX74) genetic background.Using H121 B as maintainer line,threeisonuclear alloplasmic CMS lines,W-H121 A,D-H121 A and Y-H121 A,with the wildabortive(WA),dwarf wild abortive(DA),and Yegong abortive(YA) types of CMScytoplasm,respectively,were developed.The H121 B maintainer line was thenimproved by a way of breeding by design.Three favorable alleles,gs3 for long grain,Wxlfor low amylose content,and OsMADSSO for early heading date,in the chromosomalsubstituted segments of single segment substitution lines(SSSLs) were selected fromthe SSSL library in the HJX74 genetic background,and were pyramided together inH121 B through marker-assisted selection(MAS).The new maintainer line,H131 B,showing the phenotypes of longer in grain length,lower in amylose content,and earlierin heading date than those in H121 B,achieved the breeding goal designed.UsingH131 B as maintainer line,three new isonuclear alloplasmic CMS lines,W-H131 A,DH131A and Y-H131 A,were developed.Those results indicate that breeding by designin rice can be conducted under the platform of the HJX74 SSSL library.Establishmentof the platform for breeding by design of CMS lines will be helpful for sustainableimprovement of CMS lines in hybrid rice development.
Cytoplasmic male sterility(CMS) is an important foundation for heterosis utilization andexploited widely to hybrid seed production in rice.However,the traditional experiencedriven and labor-cost breeding style left little room for sustainable improvement ofhybrid rice.Development of molecular biology and genomics provides a chance toenhance hybrid rice breeding efficiency through breeding by design.In this study,aline H121 B with rj3 and rf4 genes from XieqingzaoB(XB) was developed in theHuajingxian74(HJX74) genetic background.Using H121 B as maintainer line,threeisonuclear alloplasmic CMS lines,W-H121 A,D-H121 A and Y-H121 A,with the wildabortive(WA),dwarf wild abortive(DA),and Yegong abortive(YA) types of CMScytoplasm,respectively,were developed.The H121 B maintainer line was thenimproved by a way of breeding by design.Three favorable alleles,gs3 for long grain,Wxlfor low amylose content,and OsMADSSO for early heading date,in the chromosomalsubstituted segments of single segment substitution lines(SSSLs) were selected fromthe SSSL library in the HJX74 genetic background,and were pyramided together inH121 B through marker-assisted selection(MAS).The new maintainer line,H131 B,showing the phenotypes of longer in grain length,lower in amylose content,and earlierin heading date than those in H121 B,achieved the breeding goal designed.UsingH131 B as maintainer line,three new isonuclear alloplasmic CMS lines,W-H131 A,DH131A and Y-H131 A,were developed.Those results indicate that breeding by designin rice can be conducted under the platform of the HJX74 SSSL library.Establishmentof the platform for breeding by design of CMS lines will be helpful for sustainableimprovement of CMS lines in hybrid rice development.
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