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QTL Mapping of heading stage for Photoperiodthermo Sensitive Male Sterile Line BS366 in Wheat

2014年中国作物学会学术年会

作者： Guo-Liang Zhang Fei-Fei Wang Xiu-Wen Ding Wei-Ming Shi Qi-Gen Dai College of Life Science and Chemistry Engineering Jiangsu Province Engineering Lab for Biomass Conversion and Process IntegrationHuaiyin Institute of Technology State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of Sciences Key Laboratory of Crop Cultivation and Physiology of Jiangsu Province Yangzhou University

Rice at heading stage is highly sensitive to persistent organic ***1,2,4-trichlorobenzene(TCB) can affect photosynthesis and seed production,and consequently rice *** to high TCB stress can vary among different *** this study,two rice genotypes(Ningjing 1 and Yangfujing 8,which are TCB sensitive and tolerant,respectively) were exposed to different1,2,4-TCB concentrations(0,20,40,60 mg/kg) in soil *** the heading stage,various morphological,physiological and biochemical characteristics of rice were *** and distribution characteristics response to 1,2,4-TCB stress of rice were also *** results showed that TCB content in different organs both followed the order:root > stem > leaf > grain,TCB accumulation in the two cultivars both increased as the concentration of TCB *** absorbtion and accumulation capacity of TCB by Yangfujing 8 was lower than Ningjing *** TCB concentrations above 40 mg/kg adversely affected the growth and yield of rice whereas 20 mg/kg TCB had no significant *** are significant decreases in efficient panicle,number of grain per ear,setting rate,grain weight and root activities,and that of Ningjing 1 decreased more than Yangfujing *** contrast,TCB exposure resulted in an increase in the soluble protein content and the oxidative stress response[antioxidant enzymes(SOD,POD),lipid peroxidation(O,MDA)]in two rice cultivars,but differed in leaves and *** results suggest that the well growth vigor,high protein content,better ability of antioxidant system in scavenging reactive oxygen species and lower membrane lipid peroxidation are mainly responsible for the higher TCB tolerant ability of Yangfujing 8 comparing with Ningjing 1.

关键词： Rice 1,2,4-Trichlorobenzene biological responses heading stage

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Agricultural Science & Technology 2010年第6期11卷 45-48页

作者：张立平徐小芹赵昌平苑少华郭玉平北京市农林科学院杂交小麦工程技术研究中心北京100097 首都师范大学生命科学学院北京100048

[Objective]The study aimed to map QTLs（Quantitative trait loci）of heading stage for phtopeiod-thermo sensitive male sterile line BS366 in wheat.[Method] A population of 234 doubled haploid derived from the cross between BS366 and Baiyu149 was planted in Beijing and Funan in 2007,*** used composite interval mapping（CIM）method to analyse the QTLs for heading stage.[Result]We detected 15 QTLs for heading stage.8 QTLs were detected in both Beijing and Funan,which were located on 1B,2A,2D,3B（2 loci）,6B（2 loci）and 7B.A single QTL accounted for 2.42%-10.98% of pheotypic varience.[Conclusion] Eight QTLs which were detected under two environments could be applied for marker-assisted breeding and improvement of *** QTL on chromosome 1B was new for heading stage,which enriches the QTL resource.

关键词： Wheat(Triticum aestivum L.) heading stage QTL

LHD3 Encoding a J-Domain Protein Controls heading Date in Rice

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Rice science 2023年第5期30卷 437-448页

作者： LIU Qiao QIU Linlin HUA Yangguang LI Jing PANG Bo ZHAI Yufeng WANG Dekai College of Life Sciences and Medicine Zhejiang Sci-Tech UniversityHangzhou 310018China College of Life Science University of Chinese Academy of SciencesBeijing 100049China

heading date is one of the most important agronomic traits of rice,which critically affects rice ecogeographical adaptation,yield and *** this study,a late heading date 3(lhd3)mutant was screened from the^(60)Co-γirradiation mutant *** lhd3 delayed heading date in rice under both short day and long day ***-based cloning combined with Mutmap strategy was adopted to isolate the causal LHD3 *** LHD3 gene encodes a DNA_J domain protein,which was ubiquitously expressed in various plant organs,and dominant expressed in stems and *** localization analysis showed that LHD3 was localized to nucleus,indicating that LHD3 may interact with other elements to regulate the expression of flowering *** transcriptions of the heading activators Ehd1,Hd3a and RFT1 significantly decreased in the lhd3 mutant,suggesting that LHD3 may control the heading date through the Ehd1-Hd3a/RFT1 photoperiodic flowering *** variation and haplotype analyses of the genomic region of LHD3 showed that there were 7 haplotypes in the LHD3 region from 4702 *** haplotypes of LHD3 can be divided into two classes:class a and class b,and the heading dates of these two classes were significantly *** study showed that two single nucleotide polymorphisms(SNPs),SNP10(G2100C)in Hap II and SNP3(C861T)in Hap VII,may be the functional sites causing early and late heading in *** diversity analysis showed LHD3 had been selected in the indica population,rather than in the japonica ***,the present study sheds light on the regulation of LHD3 on heading date in rice and suggests that LHD3 is a novel promising new target for rice molecular design and breeding improvement.

关键词： rice LHD3 heading stage J-domain protein photoperiod flowering pathway

Plant Ideotype at heading for Super High-Yielding Rice in Double-Cropping System in South China

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Rice science 2005年第2期12卷 92-100页

作者： CHEN You-ding WAN Bang-hui ZHANG Xu Rice Research Institute Guangdong Academy of Agricultural Sciences Guangzhou 510640 China College of Agriculture South China Agricultural University Guangzhou 510640 China

The newly released super high-yielding hybrid rice combinations, Yueza 122, Fengyou 428, Peiza 67, and the super high-yielding conventional cultivars, Guangchao 3 and Shengtai 1, were grown in both early and late seasons. The morphological characters of each population were investigated at the heading stage, and the data were analyzed by using ANOVY and other statistic methods. The plant ideal morphological characters at the heading stage were established as follows： 1 ） for the early-season cropping, 90-105 cm plant height; 11-12 tillers per plant; 35-40 em length and 2.1-2.2 cm width of flag leaf; 46-50 cm length and 1.8-2.1 cm width of the second leaf from the top （L2）; 59-64 cm length and 1.4-1.9 cm width of the third leaf from the top （L3）; 7°-14°, 18° and 200-33° for the ideal leaf angles of the flag leaf, L2 and L3, respectively; 2） for the late-season cropping, 90-100 cm plant height; 9-15 tillers per plant; 30-41 cm length and 1.8-2.0 cm width of flag leaf; 53-61 cm length and 1.3-1.8 cm width of L2; 52-58 cm length and 1.2-1.5 cm width of L3; 9°-19°, 15°-37° and 16°-49° for the ideal leaf angles of the flag leaf, L2 and L3, respectively. The main physiological characteristics of these varieties were also analyzed.

关键词： super high-yielding morphology ideotype heading stage South China double cropping rice

Differences of photoinhibition and photooxidation between indica and japonica rice under varied conditions

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Chinese Rice Research Newsletter 2001年第4期9卷 11-12页

作者： JIBenhua ZHANGYanhong XIEHuansong JIAODemao DeptofLifeSciandTech NantongTeacher＇sCollegeNantong226007 InstofAgrobiologicalGeneticsandPhysiology JiangsuAcadofAgriSciNanjing210014China

To provide physiological basis for the genetic improvement of hybrid rice with photoinhibition or photooxidation tolerance, we measured physiological indexes related to PSⅡ light energy conversion efficiency (Fv/Fm) and membrane lipid peroxidation. Varieties used were japonica 02428 and indica 3037. At the heading stage, the potted rice plants were put into phytotron with day/night temperature of 26± 1℃ /22± 1℃ (normal temperature group) and 11± 1℃ /10± 1℃ (chilling temperature group),and relative humidity of 78% 82% .

关键词： membrane lipid peroxidation conversion efficiency genetic improvement relative humidity heading stage hybrid rice

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