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Fine mapping of QTLs for Stigma Exsertion Rate from Oryza glaberrima by Chromosome Segment substitution

Rice science 2022年第1期29卷 55-66,I0024页

作者： TAN Quanya ZHU Haitao LIU Hui NI Yuerong WU Shengze LUAN Xin LIU Junwei YANG Weifeng YANG Zifeng ZENG Ruizhen LIU Guifu WANG Shaokui ZHANG Guiquan Guangdong Provincial Key Laboratory of Plant Molecular Breeding/State Key Laboratory for Conservation and Utilization of Subtropical Agro-Bioresources South China Agricultural UniversityGuangzhou 510642China

Stigma exsertion is an important trait for outcrossing ability in rice.Stigma exsertion rate(SER)of male sterile lines(MSLs)is a key factor affecting F1-seed production in hybrid rice.In this study,seven QTLs for SER were detected on five chromosomes using a set of single-segment substitution lines(SSSLs)derived from O.glaberrima.Three of the QTLs were mapped in the estimated intervals of 92.5–333.0 kb.qSER-5 was located in a substitution segment of 92.5 kb.qS ER-1 b and qS ER-8 b were respectively limited to 333.0 kb and 107.5 kb by secondary substitution mapping.qSER-1 b and qSER-3 had bigger additive effects of 11.5%and 11.9%,respectively,while the other five QTLs had smaller additive effects from 5.7%to 8.6%.Open reading frames were identified in the regions of qS ER-5 and qSER-8 b in O.sativa and O.glaberrima genomes.Fine mapping of the QTLs laid a foundation for the cloning of genes,and QTLs for SER will be used to develop MSLs with strong ability of outcrossing.

关键词： stigma exsertion QTL single-segment substitution line substitution mapping Oryza glaberrima

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QTL mapping for Rice RVA Properties Using High-Throughput Re-sequenced Chromosome Segment substitution Lines

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Rice science 2013年第6期20卷 407-414页

作者： ZHANG Chang-quan HU Bing ZHU Kong-zhi ZHANG Hua LENG Ya-lin TANG Shu-zhu GU Ming-hong LIU Qiao-quan Key Laboratory of Plant Functional Genomics of the Ministry of Education Jiangsu Key Laboratory of Crop Genetics and PhysiologyCollege of AgricultureYangzhou University

The rapid visco analyser （RVA） profile is an important factor for evaluation of the cooking and eating quality of rice. To improve rice quality, the identification of new quantitative trait loci （QTLs） for RVA profiling is of great significance. We used a japonica rice cultivar Nipponbare as the recipient and indica rice 9311 as the donor to develop a population containing 38 chromosome segment substitution lines （CSSLs） genotyped by a high-throughput re-sequencing strategy. In this study, the population and the parent lines, which contained similar apparent amylose contents, were used to map the QTLs of RVA properties including peak paste viscosity （PKV）, hot paste viscosity （HPV）, cool paste viscosity （CPV）, breakdown viscosity （BKV）, setback viscosity （SBV）, consistency viscosity （CSV）, peak time （PET） and pasting temperature （PAT）. QTL analysis was carried out using one-way analysis of variance and Dunnett＇s test, and stable QTLs were identified over two years and under two environments. We identified 10 stable QTLs： qPKV2-1, qSBV2-1; qPKV5-1, qHPV5-1, qCPV5-1; qPKV7-1, qHPV7-1, qCPV7-1, qSBV7-1; and qPKV8-1 on chromosomes 2, 5, 7 and 8, respectively, with contributions ranging from -95.6% to 47.1%. Besides, there was pleiotropy in the QTLs on chromosomes 2, 5 and 7.

关键词： rice chromosome segment substitution line rapid visco analyzer profile quantitative traitlocus substitution mapping

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Detection of QTL for Cold Tolerance at Bud Bursting Stage Using Chromosome Segment substitution Lines in Rice (Oryza sativa)

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Rice science 2011年第1期18卷 71-74页

作者： LIN Jing ZHU Wen-yin ZHANG Ya-dong ZHU Zhen ZHAO Ling CHEN Tao ZHAO Qing-yong ZHOU Li-hui FANG Xian-wen WANG yan-ping WANG Cai-lin Institute of Food Crops Jiangsu Academy of Agricultural Sciences Jiangsu High Quality Rice R ＆ D Center Nanjing Branch of China National Center for Rice Improvement Research Center for Protection and Utilization of Agricultural Germplasm Resource in Jiangsu Province Nanjing 210014 China

Ab The cold tolerance at the bud bursting stage （CTB） was evaluated at 5℃ by using a set of 95 chromosome segment substitution lines （CSSLs） derived from an indica rice 9311 and a japonica rice Nipponbare with a genetic background of 9311. The result showed that six CSSLs had slightly stronger effect on CTB than 9311. Total four quantitative trait loci （QTLs） for CTB were preliminary mapped on chromosomes 5 and 7 by substitution mapping, qCTB-5-1, qCTB-5-2 and qCTB-5-3 were mapped in the region of RM267-RM1237, RM2422-RM6054 and RM3321-RM1054, which were 21.3 cM, 27.4 cM and 12.7 cM in genetic distance on rice chromosome 5, respectively, qCTB-7 was mapped in a 6.8-cM region of RM11-RM2752 on rice chromosome 7.

关键词： chromosome segment substitution lines cold tolerance bud bursting stage substitution mapping rice

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mapping of QTL for Phenol Reaction Using Chromosome Segment substitution Lines in Rice （Oryza sativa L.）

Mapping of QTL for Phenol Reaction Using Chromosome Segment ...

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江苏省遗传学会第七届二次代表大会暨学术研讨会

作者： YANG De-wei1,2, ZHU Wen-yin2, LIN Jing2, ZHAO Ling2, ZHANG Ya-dong2, ZHU Zhen2, CHEN Tao2, Wang Cai-lin2① (1.Agricultural College , Nanjing Agricultural University , Nanjing 210095, China 2.Institute of Food Crops, Jiangsu Academy of Agricultural Sciences, Jiangsu High Quality Rice Research&Development Center, Nanjing 210014, China )

The phenol reaction on rice seed is one of the indexes differentiated japonica from indica. In this paper, chromosome segment substitution lines（CSSLs）, derived from 9311/ Nipponbare with 9311 as the recurrent parent, were experimented for the phenol reaction, and three QTLs were analyzed with the substitution mapping. The results showed that four chromosome segment substitution lines （CSSLs） were 4 classes and the rest were 0 to 1 class. Each CSSL had one introgressed segment coming from Nipponbare;three CSSLs on rice chromosome 2, two CSSLs on rice chromosome 4 and three CSSLs on rice chromosome 7 had one introgressed segments, respectively. The genetic distance of the eight introgressed segment were 24.9cM、37.8cM、 9.7cM、 9.5cM、22.7cM、16.7cM、22.2cM and 13.0cM , respectively. Three QTLs for the phenol reaction were identified. qPH2 was mapped in the region of RM406 and RM240, which was 12.9cM in genetic distance on rice chromosome 2. qPH4-1 was mapped in the region of RM280 and RM5709, which was 9.5cM in genetic distance on rice chromosome 4. qPH7 was mapped in the region of RM11 and RM6574, which was 16.0cM in genetic distance on rice chromosome 7. The QTL for the phenol reaction on rice seed can be mapped primely using chromosome segment substitution lines. mapping of the QTL has laid a foundation for fine mapping and cloning of the QTL in rice.

关键词： Rice chromosome segment substitution lines（CSSLs） substitution mapping phenol reaction

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Genomic characteristics and QTL identifications of chromosomal single-segment substitution lines of O. meridionalis in the genetic background of O. sativa

Genomic characteristics and QTL identifications of chromosom...

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2016年全国植物生物学大会

作者： Xiaoping Pan Rouxian Wu Liping Peng Kang Sun Haitao Zhu Ruizhen Zeng Shaokui Wang Guiquan Zhang Xuelin Fu Key Laboratory of Plant Molecular Breeding Guangdong Province/College of AgricultureSouth China Agricultural University

O. meridionalis indigenous to Australia is an AA genome wild species in Oryza,it has been considered an important germplasm resource for improvement of cultivated rice. In this study,a total of 99 chromosomal single-segment substitution lines(SSSLs) were developed by using O. meridionalis as a donor and an elite indica cultivar,Huajingxian 74 as recipient,through successive backcrossing and SSR marker-based genotyping. The 99 substituted segments were distributed on 12 chromosomes with the estimated total lengths of 1580.16 cM and 15.11 c M mean length of every segment. The 837.94 c M coverage length of substituted segments covered 54.98 percent of rice genome. Fourteen quantitative traits were evaluated in SSSLs for two seasons,including plant vegetative growth traits,i.e.,heading date,plant height,flag leaf length,flag leaf width;Grain yield related traits,i.e.,panicle numbers per plant,panicle length,spikelet numbers per panicle,grain density,number of primary branches per panicle,seed-setting rate,100-grain weight,grain length,grain width,and ratio of grain length to width. A total of 161 putative QTLs detected for thirteen traits except panicle numbers per plant. Among them,32 QTLs related to nine traits were identified both in the late season of 2014 and the early season of 2015,in which 10 QTLs had the positive additive effects. The additive effect of the QTLs ranged from 0.10 to 33.55,and the contribution of the additive effect to traits were from 0.06-20.92 percent. The present study demonstrated that the SSSLs offer both opportunities and a good germplasm platform for identification and transformation beneficial genes of O. meridionalis,as well as a precious long-time in-vivo conservation reservoir for O. meridionalis.

关键词： O. meridionalis chromosomal single-segment substitution lines（SSSLs） QTL identification substitution mapping

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