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QTL mapping of the root traits and their correlation analysis with drought resis-tance using DH lines from paddy and upland rice cross 被引量:15

QTL mapping of the root traits and their correlation analysis with drought resis-tance using DH lines from paddy and upland rice cross
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摘要 A Double Haploid (DH) population, 116 plants, derived from the cross between Japonica upland rice IRAT109 and paddy rice Yuefu, planted in PVC pipe under upland ecosystem in 2001 and 2002, was used in this study. Seven root traits, including basal root thickness (BRT), total root number (RN), maximum root length (MRL), root fresh weight (RFW), root dry weight (RDW), ratio of root fresh weight to shoot fresh weight (RFW/SFW) and ratio of root dry weight to shoot dry weight (RDW/SDW), were studied. Using index of drought resistance (IDR), the ratio of yield under upland ecosystem to yield under lowland ecosystem of DH lines, as the criteria of drought resistance, and correla-tion analysis between root traits and IDR, showed that BRT, MRL and RN were significantly correlated with IDR. High IDR lines had thicker BRT, longer MRL and less RN than low IDR lines. A molecular linkage map with 94 RFLP markers and 71 SSR markers covering 1535.1 cM was pro-duced. QTLs and G譋 interactions for BRT, RN, MRL, RFW, RDW, RFW/SFW and RDW/SDW were obtained based on the constructed molecular linkage map and soft-ware QTLmapper version 1.0. A total of 18 additive QTLs and 18 pairs of epistatic QTLs associated with root traits were detected. There were nine additive QTLs and two pairs of epistatic QTLs performed significant interactions with environment. Some QTLs with high general contribution and no G譋 interaction were obtained. Two pairs of epistatic QTLs mrl3 and mrl8, brt3 and brt11a controlling MRL and BRT had high general contributions of 21.51% and 13.03% respectively. An additive QTL and a pair of epistatic QTLs controlling RFW and RDW had high general contributions of 13.50% and 25.64% respectively. Marker assisted selec-tion (MAS) for rice drought resistance based on QTL with high general contribution, low G譋 interaction and tightly linkage with IDR were also discussed. A Double Haploid (DH) population, 116 plants, derived from the cross between Japonica upland rice IRAT109 and paddy rice Yuefu, planted in PVC pipe under upland ecosystem in 2001 and 2002, was used in this study. Seven root traits, including basal root thickness (BRT), total root number (RN), maximum root length (MRL), root fresh weight (RFW), root dry weight (RDW), ratio of root fresh weight to shoot fresh weight (RFW/SFW) and ratio of root dry weight to shoot dry weight (RDW/SDW), were studied. Using index of drought resistance (IDR), the ratio of yield under upland ecosystem to yield under lowland ecosystem of DH lines, as the criteria of drought resistance, and correla-tion analysis between root traits and IDR, showed that BRT, MRL and RN were significantly correlated with IDR. High IDR lines had thicker BRT, longer MRL and less RN than low IDR lines. A molecular linkage map with 94 RFLP markers and 71 SSR markers covering 1535.1 cM was pro-duced. QTLs and G譋 interactions for BRT, RN, MRL, RFW, RDW, RFW/SFW and RDW/SDW were obtained based on the constructed molecular linkage map and soft-ware QTLmapper version 1.0. A total of 18 additive QTLs and 18 pairs of epistatic QTLs associated with root traits were detected. There were nine additive QTLs and two pairs of epistatic QTLs performed significant interactions with environment. Some QTLs with high general contribution and no G譋 interaction were obtained. Two pairs of epistatic QTLs mrl3 and mrl8, brt3 and brt11a controlling MRL and BRT had high general contributions of 21.51% and 13.03% respectively. An additive QTL and a pair of epistatic QTLs controlling RFW and RDW had high general contributions of 13.50% and 25.64% respectively. Marker assisted selec-tion (MAS) for rice drought resistance based on QTL with high general contribution, low G譋 interaction and tightly linkage with IDR were also discussed.
出处 《Chinese Science Bulletin》 SCIE EI CAS 2003年第24期2718-2724,共7页
基金 supported by the Hi-Tech Research and Development Program of China(Grant No.2001AA211091) the National Natural Science Foundation of China(Grant No.30070464) China National Key Technologies R&D Program(Grant No.02-04) “948"project(Grant No.2001-204)of Ministry of the Agriculture of China.
关键词 抗旱性 DH 双单倍体 根系组织 upland rice, index of drought resistance (IDR), root traits, G×E interaction.
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参考文献11

  • 1徐富贤,郑家奎,朱永川,丁国祥,王贵雄.杂交中稻发根力与抽穗开花期抗旱性关系的研究[J].作物学报,2003,29(2):188-193. 被引量:31
  • 2Wade,L.J.Critical characteristics of rainfed rice environments and implications for rice improvement[].GeneticImprovement ofRice forWater-limitedEnvironments.1999
  • 3Wang,H.Q,Bouman,B.A.M,Zhao,D.L. et al.Aerobic rice in northernChina: opportunities and challenges[].Water-wiseRiceProduction.2002
  • 4Zhu,J.AnalysisApproaches forGeneticModels[]..1997
  • 5Maclean,J.L.,Dawe,D.C,Hardy,B. et al.RiceAlmanac[]..2002
  • 6Li, Z. C,Mu, P.,Li, C. P. et al.QTL mapping and GE interaction for root traits in a DH population from Japonica upland and lowland rice cross under three ecosystems[].Theoretical and Applied Genetics.
  • 7Nguyen H T,Babu R C,Blum A.Breeding for drought resistance in rice: physiology and molecular genetics consideration[].Crop Science.1997
  • 8Zhang J,Zheng H G,Aarti A,et al.Locating genomic regions associated with components of drought resistance in rice: Comparative mapping within and across species[].Theoretical and Applied Genetics.2001
  • 9Ray JD,Yu L,McCouch SR,et al.Mapping quantitative trait loci associated with root penetration ability in rice (oryza sativa L.)[].Theoretical and Applied Genetics.1996
  • 10Champoux MC,Wang G,Sarkarung S,et al.Locating genes associated with root morphology and drought avoidance in rice via linkage to molecular markers[].Theoretical and Applied Genetics.1995

二级参考文献1

  • 1余叔文.Effects on dry for different growing data on rice[J].Acta Agro Sinica(作物学报),1962,(4):399-408.

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