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Integrated Approach to Control False Smut in Hybrid Rice in Sichuan Province, China

Rice science 2014年第6期21卷 354-360页

作者： LIANG Yan ZHANG Xue-mei LI De-qiang huANG Fu hu pei-song PENG Yun-liang China National Rice Research Institute Institute of Plant Protection Sichuan Academy of Agricultural Sciences/Key Laboratory of Integrated Pest Management on Crops in Southwest China Ministry of Agriculture Sichuan Agricultural University

Severe epidemic of false smut, caused by Ustilaginoidea virens （Cooke） Takahashi （teleomorph Villosiclava virens） has been reported in different parts of Asia and America. Different fungicides or bio-control agents against false smut were applied at different times before heading on a susceptible rice variety Pu-6. A control efficiency as high as 91.92% was resulted from spraying 2.5% Wenquning, a suspension of Bacillus subtilis in solution of validamycin with 4.5 L/hm2 at 6 d before heading. Among the 186 hybrid rice screened in 2010, low significant correlations between the dates of full heading, rates of infected plants and panicles as well as the number of infected florets were found, with the correlation coefficients ranging from 0.2331 to 0.5212. However, significant difference in susceptibility coefficients was also found between the varieties which had the same dates of full heading. In the plot experiments to compare the susceptibility in 2011, the average rates of infected panicles of Yixiangyou 2168, Chuanxiangyou 3, Dexiang 4103, Yixiangyou 2115, Nei5you 317, Yangxinyou 1 were significantly lower than those of the control varieties Gangyou 725 and Gangyou 188 at the disease nursery located at Qionglai, Sichuan Province, China. When Neixiangyou 8156 and Nei5you 317 were sprayed with 2.5% Wenquning at 4.5 L/hm2 for two times at 6 d before and 1 d after heading, respectively, the control efficiencies of Nei5you 317 and Neixiangyou 8156 were respectively 100% and 82.24% compared to that of Gangyou 725. Satisfactory control effects had also obtained by single spray of 2.5% Wenquning at 4.5 L/hm2 at 5-6 d before heading. Therefore, less susceptible hybrid rice in combination with spraying Wenquning at 5-6 d before heading was suggested for the disease control in Sichuan Province, China.

关键词： hybrid rice Ustilaginoidea virens validamycin Bacillus subtilis Bs-916 integrated control

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Phenotype of Rice Floury Endosperm Mutant flo7 and Fine Mapping of Mutated Gene

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Rice science 2015年第4期22卷 162-170页

作者： SHENG Zhong-hua FANG Peng-fei LI San-feng JIAO Gui-ai XIE Li-hong hu pei-song TANG Shao-qing WEI Xiang-jin State Key Laboratory of Rice Biology/Key Laboratory of Rice Biology and Genetic Breeding of Ministry of Agriculture China National Rice Research Institute

The major storage substance in rice endosperm is starch, which accounts for 80% of dry matter weight. In this study, rice mutant flo7, selected from the progeny of Nipponbare＇s tissue culture, displayed floury and opaque endosperm. Compared with its corresponding wild type （WT） Nipponbare, the mutant rio7 produced longer, narrower, thinner and lighter grains. The levels of glucose, fructose and sucrose in the mutant flo7 endosperm were higher than those in the WT endosperm, whereas the protein content was not affected. With respect to both amylose content and gel consistency, the mutant flo7 was lower than WT, but its alkali value was higher. Scanning electron microscopic examinations showed that the endosperm of the mutant flo7 contained irregular, loosely packed and compound starch granules. Genetic analysis indicated that the mutant phenotype was determined by a single recessive nuclear gene The flo7 locus was mapped to a region on the long arm of chromosome 12, within a 95.1 kb interval defined by the markers C2-11 and C5-15. There are 13 open reading frames in the mapping interval. Transcription profiling of the developing grains showed that a number of genes involved in starch synthesis were affected differently in the mutant flo7.

关键词： flo7 floury endosperm starch fine mapping rice mutant

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Mapping quantitative trait loci associated with starch paste viscosity attributes by using double haploid populations of rice (Oryza sativa L.)

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Journal of Integrative Agriculture 2020年第7期19卷 1691-1703页

作者： Tahmina SHAR SHENG Zhong-hua Umed ALI Sajid FIAZ WEI Xiang-jin XIE Li-hong JIAO Gui-ai Fahad ALI SHAO Gao-neng hu Shi-kai hu pei-song TANG Shao-qing State Key Laboratory of Rice Biology/Key Laboratory of Rice Biology and Breeding Ministry of Agriculture/China National Rice Research InstituteHangzhou 310006P.R.China

The paste viscosity attributes of starch,measured by rapid visco analyzer(RVA),are important factors for the evaluation of the cooking and eating qualities of rice in breeding *** determine the genetic roots of the paste viscosity attributes of rice grains,quantitative trait loci(QTLs)associated with the paste viscosity attributes were mapped,using a double haploid(DH)population derived from Zhongjiazao 17(YK17),a super rice variety,crossed with D50,a tropic japonica ***-four QTLs,for seven parameters of the RVA profiles,were identified in three planting *** 54 QTLs were located on all of the 12 chromosomes,with a single QTL explaining 5.99 to 47.11%of phenotypic *** the QTLs identified,four were repeatedly detected under three environmental conditions and the other four QTLs were repeated under two *** of the QTLs detected for peak viscosity(PKV),trough viscosity(TV),cool paste viscosity(CPV),breakdown viscosity(BDV),setback viscosity(SBV),and peak time(PeT)were located in the interval of RM 6775-RM 3805 under all three environmental conditions,with the exception of pasting temperature(PaT).For digenic interactions,eight QTLs with six traits were identified for additivexenvironment interactions in all three planting *** epistatic interactions were estimated only for PKV,SBV and *** present study will facilitate further understanding of the genetic architecture of eating and cooking quality(ECQ)in the rice quality improvement program.

关键词： RVA profiles eating and cooking quality(ECQ) quantitative trait loci(QTL) DH population rice

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Identification of QTLs associated with cadmium concentration in rice grains

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Journal of Integrative Agriculture 2018年第7期17卷 1563-1573页

作者： hu Da-wei SHENG Zhong-hua LI Qian-long CHEN Wei WEI Xiang-jin XIE Li-hong JIAO Gui-ai SHAO Gao-neng WANG Jian-long TANG Shao-qing hu pei-song State Key Laboratory of Rice Biology Ministry of Science and Technology/Key Laboratory of Rice Biology and Breeding Ministry of Agriculture/China National Rice Research Institute College of Agronomy Hunan Agricultural University

Cadmium（Cd） contamination in rice has been a hot topic of research because of its potential risk to human health. In this study, a double haploid（DH） population derived from Zhongjiazao 17（YK17）（an early-season indica cultivar）×D50（a tropical japonica cultivar） was used to identify quantitative trait loci（QTLs） associated with Cd concentration in brown rice（CCBR） and Cd concentration in milled rice（CCMR）. Continuous and wide variation for CCBR and CCMR were observed among the DH population. Correlation analysis revealed a positive and highly significant correlation between the two traits. A total of 18 QTLs for CCBR and 14 QTLs for CCMR were identified in five different pot and field trials. Two pairs of QTLs for CCBR（qCCBR2-1 and qCCBR2-2, qCCBR9-1 and qCCBR9-2） and one pair of QTLs for CCMR（qCCMR5-1 and qCCMR5-2） were detected in multiple trials. The alleles increasing CCBR at the qC CBR2-1/qC CBR2-2 and qC CBR9-1/qC CBR9-2 QTLs were contributed by YK17 and D50, respectively, whereas the D50 allele at the qCCMR5-1/qCCMR5-2 QTLs increased CCMR. Eight pairs of QTLs for CCBR and CCMR, qCCBR2-2 and qCCMR2-2, qCCBR3 and qCCMR3, qCCBR4-2 and qCCMR4-1, qCCBR4-3 and qCCMR4-2, qCCBR4-4 and qCCMR4-3, qCCBR5 and qCCMR5-2, qCCBR7 and qCCMR7, and qCCBR11-1 and qCCMR11-2, co-localized on chromosomes 2, 3, 4, 5, 7, and 11, respectively. For all of these QTL pairs, except qCCBR5/qCCMR5-2, the additive effects came from YK17. In addition, four CCMR QTLs showing significant additive×environment interaction and two pairs of CCMR QTLs with bi-allelic epistatic interactions were identified. The results of this study could facilitate marker-assisted selection of breeding rice varieties with low Cd accumulation in grain.

关键词： Cd concentration in grain QTL mapping brown rice milled rice

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Genetic Analysis and Molecular Mapping of Novel White Striped Leaf Mutant Gene in Rice

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Rice science 2013年第5期20卷 336-342页

作者： SHENG Zhong-hua WEI Xiang-jin SHAO Gao-neng song Jian LUO Ju hu pei-song TANG Shao-qing CHEN Li-yun Rice Research Institute Hunan Agricultural University China National Rice Research Institute

A new white striped leaf mutant wsll was discovered from Nipponbare mutated by ethyl methanesulfonate. The mutant showed white striped leaves at the seedling stage and the leaves gradually turned green after the tillering stage. The chlorophyll content of wsll was significantly lower than that of wild-type during the fourth leaf stage, tillering stage and booting stage. The numbers of chloroplast, grana and grana lamella were reduced and the thylakoids were degenerated in wsll compared with wild type. Genetic analysis showed that the wsll was controlled by a single recessive gene. Molecular mapping of the wsll was performed using an F2 population derived from wsll/Nanjing 11. The wsll was finally mapped on the telomere region of chromosome 9 and positioned between simple sequence repeat markers RM23742 and RM23759 which are separated by approximately 486.5 kb. The results may facilitate map-based cloning of wsll and understanding of the molecular mechanism of the regulation of leaf-color by WSL1 in rice.

关键词： rice white striped leaf mutant genetic analysis gene mapping

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Relationship Between Plant Type and Grain Quality of Japonica Hybrid Rice in Northern China

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Rice science 2010年第1期17卷 43-50页

作者： HAO Xian-bin MA Xiu-fang hu pei-song ZHANG Zhong-xu SUI Guo-min huA Ze-tian China National Rice Research Institute Hangzhou 310006 China North Japonica Hybrid Rice Research and Development Center Shenyang 110101 China

Plant type and grain quality are two major aspects in rice breeding. Using canonical correlation analysis and canonical redundancy analysis, the relationship between plant type traits and rice grain quality traits was studied with 100 crosses derived from 10 sterile lines × 10 restorer lines. There was a complex relationship between parts of the traits of the two aspects. The angle of the 2nd leaf from the top and single panicle weight played important roles in plant type system and amylose content and grain length in grain quality system. The angle of the 2nd leaf from the top, plant height and single panicle weight had a great effect on grain quality traits, and amylose content, brown rice rate and translucency were easily influenced by plant type traits. Selection index model indicated that japonica hybrid rice in Northern China with good quality was characterized by broad flag leaf and 2nd leaf from the top, narrow and short 3rd leaf from the top, low plant height, short culm, long and more panicles and low single panicle weight.

关键词： japonica hybrid rice plant type grain quality canonical correlation selection index

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Analysis on Factors Affecting Seedling Establishment in Rice

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Rice science 2007年第1期14卷 27-32页

作者： LUO Jux TANG Shao-qing hu pei-song Aleman LOUIS JIAO Gui-ai TANG Jian China National Rice Research Institute Hangzhou 310006 China Cuba National Rice Research Institute Havana Cuba

Elongations of coleoptile and mesocotyl are related directly to rice seedling establishment in soil and height of plant is related to lodging in rice production. Twelve typical rice cultivars with different lengths of coleoptile and mesocotyl （long, medium and short） were selected by screening the lengths of coleoptile and mesocotyl in 1500 accessions. The seedling establishments of these typical cultivars were compared under the combinations of different sowing depths and flooding durations, and two semi-dwarf varieties （G140, Zhong 96-21） with good seedling establishments and optimum mesocotyl lengths were found. The length of mesocotyl was completely fitted negative binomial distribution and the length of coleoptile was nearly fitted Iognormal distribution. Analysis of the relationships among mesocotyl, coleoptile, seeding depth, flooding duration, and their interactions to seedling establishment percentage showed that there existed significant relations among mesocotyl, coleoptile, mesocotyl x coleoptile, seeding depth, flooding duration and mesocotyl x sowing depth in the experiment for seedling establishment.

关键词： direct seeding seedling establishment coleoptile mesocotyl rice

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基于生物阻抗谱的舌体肿瘤组织识别方法

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物理学报 2021年第15期70卷 352-358页

作者：姚佳烽胡松佩杨璐吴阳韩伟刘凯南京航空航天大学机电学院南京210016 南京大学医学院南京大学医学院附属口腔医院南京210008

基于生物阻抗谱技术,提出一种非侵入式、快速、便捷的舌体肿瘤组织识别方法.根据舌体组织不同病理及生理状态下电学特性的差异性来判断其是否病变,以帮助主刀医师在临床舌体肿瘤手术切除中既能完整的切除肿瘤又能尽可能多的保留患者舌功... 详细信息

基于生物阻抗谱技术,提出一种非侵入式、快速、便捷的舌体肿瘤组织识别方法.根据舌体组织不同病理及生理状态下电学特性的差异性来判断其是否病变,以帮助主刀医师在临床舌体肿瘤手术切除中既能完整的切除肿瘤又能尽可能多的保留患者舌功能.本文在小鼠上建立了人舌鳞癌细胞(HSC3)原位舌癌移植瘤模型,用生物阻抗谱的方法对其正常组织区域、混有肿瘤组织区域及肿瘤组织区域进行了电学特性研究.幅值频谱显示在8.09×10^(5)-5×10^(6)Hz的高频段可以根据其电学特性区分3种组织.在实验过程中,从高频段的幅值频谱中提取出弛豫频率f_(relax)、电阻抗实部Z′_(relx)和电阻抗虚部Z″_(relax) 3个电学参数,并根据这3个电学参数定义癌变组织系数α与β(待测组织阻抗值相对于正常组织阻抗值的实部变化百分比记为α,虛部相对变化百分比记为β)进行肿瘤组织识别.结果表明,当α≤36.5%,β≤31.2%时,组织是正常组织;当α≥36.5%,β≥312%时,组织可能混有肿瘤组织;当α≥82.7%,β≥73.6%时,组织是肿瘤组织。

关键词：舌体肿瘤生物阻抗谱电学特性弛豫频率

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中国水稻科技发展战略

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中国水稻科学 2008年第3期22卷 223-226页

作者：程式华胡培松中国水稻研究所浙江杭州310006

分析了现代水稻科技与产业发展的国际趋势与特点、我国国民经济和社会发展对水稻的需求,回顾了我国水稻科技创新体系的建设历史与成效,着眼于现代水稻科技发展方向和水稻行业的需求,提出了我国水稻科技发展战略和重点课题。

关键词：科学技术发展战略水稻

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基于生物阻抗谱的生物细胞活性免标记检测方法

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生物化学与生物物理进展 2023年第11期50卷 2766-2774页

作者：徐恺杰叶霞丁力胡松佩姚佳烽江苏理工学院机械工程学院常州213001 南京航空航天大学机电学院南京210016

目的基于生物阻抗谱(bioelectrical impedance spectroscopy,BIS)技术,提出一种免标记的生物细胞活性实时检测方法。该方法依据不同浓度、生理、病理状态下细胞组织的电学特性差异来判断细胞是否具有活性,以协助医师在临床手术中快速... 详细信息

目的基于生物阻抗谱(bioelectrical impedance spectroscopy,BIS)技术,提出一种免标记的生物细胞活性实时检测方法。该方法依据不同浓度、生理、病理状态下细胞组织的电学特性差异来判断细胞是否具有活性,以协助医师在临床手术中快速精准定位患者烫伤组织并实现有效切除。方法使用具有活性的斑马鱼胚胎干细胞来模拟人体烫伤组织,采用生物阻抗谱技术来鉴别细胞组织的生理状态。结果在不同状态下,细胞的阻抗幅值变化有显著的差异,可以从中发现同等浓度下活性细胞的阻抗幅值比死亡细胞平均高出17.25%,活性细胞发生弛豫频率的时间也比死亡细胞早25%。结论实验数据表明,生物阻抗谱法能有效区分胚胎干细胞的两类生理状态;从聚类区域中可以看出,BIS检测法具有明显的细胞活性及浓度区分能力,理论上能够快速地协助医师完成对患者烫伤组织检测。

关键词：细胞活性检测生物阻抗谱弛豫频率电学特性

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