《Table 3.Additive effect analysis of QTLs in three single-segment substitution lines S1,S2 and S3.》下

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《Identification of Rice QTLs for Important Agronomic Traits with Long-Kernel CSSL-Z741 and Three SSSLs》

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Three SSSLs（S1，S2 and S3）were developed by markerassisted selection（Table 3）.The QTLs were then validated by the t-test based on comparison of the measured traits of Nipponbare for each SSSL，because there is only one segment differed between them.Among the 20 QTLs detected in 2018，8 QTLs（qKL3，qKL7，qRLW3-1，qRLW7，qPH3-1，q KWT3，qKWT7and qNPB6）were repeatedly detected in 2019，indicating that these QTLs were genetically stable.The additive effects of q KL3 and qKL7 increased the kernel length by 0.54 and 0.15 mm，respectively，in 2019.Accordingly，S1，S2 and S3 had longer kernels than Nipponbare（Fig.2）.Three QTLs（qNPB3，qNPB7 and qPL3）with additive effects of 8.42%，4.80%and 5.52%，respectively，in 2018（Table 2），were not detected by examination of the SSSLs in 2019，indicating that some minor QTLs are susceptible to environment.In addition，five QTLs can be detected on S1，S2 and S3，which were not detected in the Nipponbare/Z741 F2 population.q KL6increased the kernel length by 0.11 mm，qKW3 and qKW6 increased kernel width by 0.10 and 0.11 mm，respectively，whereas qKW7 and q RLW6 reduced grain width and ratio of length to width by 0.08 mm and0.04，respectively，in 2019（Table 3）.