检索结果-南通市图书馆

Quantitative Trait Loci for resistance Against Fusarium Wilt Based on Three Cotton F_2 Populations

Agricultural Sciences in China 2010年第12期9卷 1799-1806页

作者： WANG Pei-zheng SHI Li-fang SU Li HU Bao-min Xinjiang Condy Seed Science ＆ Technology Development Co. Ltd Urumqi 830011 P.R.China

Fusarium wilt （FW） is one of the most common cotton diseases in the world. Identification of qtls conferring resistance to FW is key for the incorporation of resistance genes into elite cultivars. Two intraspecific （cross between Gossypium hirsuturn L.） and one interspecific （cross between Gossypium hirsutum L. and Gossypium bardence L.） F2 populations were constructed by using a highly resistant cultivar and crossing it to a susceptible cultivar with 154, 79, and 148 offsprings, respectively. Simple sequence repeats （SSR） were used to screen genomic regions closely linked to FW resistance. The results showed that five qtls associated with FW resistance were detected in two intraspecific populations using a composite interval mapping method under four different conditions. Four of these loci located on Chr. 2/Chr. 17 neighboring markers JESPR304 or CIR305 which explained 13.1 to 45.9% of the phenotypic effect. Furthermore, JESPR304 and CIR305 were previously testified and found to be tightly linked. It is possible that these four qtls detected under different conditions were the same resistance qtl/gene. We consider that there is the possibility of a major FW resistant gene in intraspecific populations. In the interspecific mapping populations two qtls were detected on Chr. 9 and Chr. 12/26 which explained great phenotypic variance of 49.4 and 45.7%. As the location of qtls for FW resistance among the intraspecific and the interspecfic populations were totally different, it is suggested that there may be different resistance mechanisms between G. bardence L. and G. hursutum L. Thus, the present research provides an opportunity to understand the genetic control of resistance to FW in Gossypium hirsutum and Gossypium bardence and to conduct MAS in breeding programs to develop FW resistant cultivars.

关键词： cotton Fusarium wilt resistance qtl molecular mapping

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Identification of host and loci with resistance to Rhizoctonia solani K(u|¨)hn:a case study in rice

Identification of host and loci with resistance to Rhizocton...

引用

第十四届全国植物基因组学大会

作者： Sinmin Zuo Xijun Chen Zongxiang Chen Yafang Zhang Xuebiao Pan Key Lab for Crop Genetics and Physiology of Jiangsu Province Key lab of Plant Functional GenomicsMinistry of EducationYangzhou University

Rice sheath blight(SB) caused by Rhizoctonia solani K(u|¨)hn is one of the most destructive diseases in *** to the complexity of host resistance and SB fungus pathogenicity,no uniform varieties and isolates have been... 详细信息

关键词： rice sheath blight resistance qtl fine mapping

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Improvement of japonica rice resistance to sheath blight by pyramiding qSB-9TQ and qSB-7TQ

Improvement of japonica rice resistance to sheath blight by ...

引用

江苏省遗传学会2013年学术研讨会

作者： CHEN Zong-xian ZHANG Ya-fang FENG Fan FENG Ming-hui PAN Xue-biao ZUO Shi-min Key Laboratory of Crop Genetics and Physiology of Jiangsu Province College of Agriculture Yangzhou University/Key Laboratory of Plant Functional Genomics of the Ministry of Education

Sheath blight（SB） is one of the worst rice diseases worldwide. It has been difficult to generate SB resistant rice varieties by relying on traditional breeding due to the quantitative nature of existing SB resistance. Two qtls, qSB-7 TQ and qSB-9 TQ on chromosomes 7 and 9, respectively, with SB resistance have been detected in the indica variety Teqing（TQ）. Here, we used TQ as the donor to introduce these two resistance qtls into different commercial japonica varieties through marker-assisted selection. Moreover, we have pyramided these two qtls in the backcrossed lines carrying each of the two qtls were significantly more resistant to SB than the controls without either of the qtls, but were significantly less resistant than the lines carrying both qtls. In the ‘0-9’ disease rating system, q SB-7 TQ and q SB-9 TQ each reduced disease severity by approximately 1.0, while two qtls pyramided reduced disease severity by 1.7. These results suggest that there is little genetic interaction between the two qtls. The backcrossed lines carrying either a single qtl or both showed no significant differences in major agronomic and productivity traits as compared to their backcross parents, suggesting that the introduction of qSB-7 TQ and qSB-9 TQ resulted in no loss of the superior agronomic traits of their parents. Thus, qSB-7 TQ and q SB-9 TQ are highly suited for breeding purposes. This work will facilitate the utilization of qSB-7 TQ and qSB-9 TQ and accelerate the breeding process of SB resistant japonica rice varieties.

关键词： Japonica rice(O.sativa) Sheath blight resistance qtl Marker-assisted selection qtl Pyramiding

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Two major qtls for rice sheath blight resistance in field revealed via chromosome single segment substitution lines

Two major QTLs for rice sheath blight resistance in field re...

引用

第十四届全国植物基因组学大会

作者： Yajun Zhu Shimin Zuo Zongxiang Chen Xingguang Chen Gang Li Yafang Zhang Guiquan Zhang Xuebiao Pan The Key Laboratory of Crop Genetics and Physiology of Jiangsu Province The Key Laboratory of Plant Functional Genomics of the Ministry of EducationCollege of AgricultureYangzhou University The State Key Laboratory for Conservation and Utilization of Subtropical Agro-bioresources South China Agricultural University

Sheath blight(SB),caused by Rhizoctonia solani K(u|¨)hn,is one of the most destructive diseases in rice *** resistance to SB is controlled by quantitative trait locus(qtl).In the present study,63 chromosome single se... 详细信息

关键词： rice sheath blight resistance qtl breeding utilization chromosome single segment substitution lines

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：