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Relationship Between Coleoptile Length and Drought Resistance and Their QTL Mapping in Rice 被引量:4
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作者 HU Song-ping YANG Hua +6 位作者 ZOU Gui-hua LIU Hong-yan LIU Guo-lan MEI Han-wei CAI Run LI Ming-shou LUO Li-jun 《Rice science》 SCIE 2007年第1期13-20,共8页
By using a set of recombinant inbred line (RIL) population involving in 195 lines derived from a cross of Zhenshan 97B (lowland variety) and IRAT109 (upland variety), the correlation analysis between coleoptile ... By using a set of recombinant inbred line (RIL) population involving in 195 lines derived from a cross of Zhenshan 97B (lowland variety) and IRAT109 (upland variety), the correlation analysis between coleoptile length (CL) and drought resistance index (DRI) and their QTL identification were conducted. There existed a significantly positive relationship between CL and DRI with the correlation coefficient of 0.2206** under water stress conditions. Under normal and water stress conditions, a total of eleven and four QTLs for CL and DRI, respectively, were detected on chromosomes 1,2, 4, 5, 6, 7, 9, 11 and 12 by using a linkage map including 213 SSR markers, which explained 4.84% to 22.65% of phenotypic variance. Chromosomes 1 and 9 possessing the QTLs for DRI harbored simultaneously QTLs for CL, and qCL9 shared the same chromosome location with qDR19 (RM160-RM215). Comparing the QTLs related to drought resistance in other studies, QTLs for CL and DRI were located in the same or adjacent marker interval as those related to root traits, such as number, dry weight, depth, and length of root. Moreover, sixteen and three pairs of epistatic loci for CL and DRI were found, which accounted for 56.17% and 11.93% of the total variation in CL and DRI, respectively. 展开更多
关键词 recombinant inbred lines coleoptile length drought resistance index quantitative trait loci RICE
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Drought resistance of four grasses using pressure-volume curve 被引量:1
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作者 HE Xingdong CONG Peifang +4 位作者 GAO Yubao LU Jianguo WANG Haitao XUE Pingping ZHANG Xu 《Frontiers in Biology》 CSCD 2007年第4期425-430,共6页
Pressure-volume curve(PV curve)technique is a major method for studying critical plant water potential and critical tissue water content when plasmolysis takes place.In the present study,a mathematical solution method... Pressure-volume curve(PV curve)technique is a major method for studying critical plant water potential and critical tissue water content when plasmolysis takes place.In the present study,a mathematical solution method is put forward to obtain parameters based on the PV curve.The cal-culated results for the parameters of Lolium perenne,Festuca arundinacea,Leymus chinensis and Stipa krylovii indicated that the mathematical solution method is convenient for actual research compared with the graphical method.Further analysis of the calculations suggested that drought resistance decreased in the following order:S.krylovii>F.arundinacea and L.chinensis>L.perenne. 展开更多
关键词 pressure-volume curve water potential of plant PLASMOLYSIS index of drought resistance
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