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The putative genetic networks underlying source leaf traits (flag leaf width and length: FLW and FLL), sink size traits (grain number per panicle and 1000-grain weight: GNP and GW), and grain yield (GY) detected in the two reciprocal introgression populations of the LT/TQ cross (LT-ILs and TQ-ILs).

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posted on 2015-07-10, 04:39 authored by Jian-Long Xu, Yun Wang, Fan Zhang, Yuan Wu, Tian-Qing Zheng, Yong-Hong Wang, Xiu-Qin Zhao, Yan-Ru Cui, Kai Chen, Qiang Zhang, Hong-Xuan Lin, Jia-Yang Li, Zhi-Kang Li

a: The SS1 (qFlw4.7, qGnp4.7 and qGw4.7) mediated pathways affecting FLL, GNP and GW; b: The SS2 (qFll3.12, qGnp3.12 and qGw3.12) mediated pathways affecting FLL, GNP, GW and GY. The rectangular and oval shaped boxes represent the interacting QTL detected in the LT-ILs and TQ-ILs, respectively, while the hexagon shaped boxes represent the interacting QTL detected in both IL populations. Single arrowed solid lines each connecting two interacting QTL indicate an inferred one-way functional dependency (FD) between a upstream QTL and a downstream one of the interacting QTL pair, while double-arrowed dot lines each linking two interacting QTL indicate the mutual FD between the interacting QTL in the same pathway, predicted based on the pattern of the mean trait values of the 4 digenic genotypes [40]. The estimated pathway effects on the traits of each downstream QTL are shown in S7 Table. Underlined QTL were also detected as main-effect QTL (S6 Table). c: The graphical genotypes of 9 high yielding LT-ILs at bin 3.12 (SS2) and its 11 downstream loci and their mean phenotypic values for GNP, GY and GW, in which the black boxes are the homozygotes of the introgressed donor (TQ) alleles and the patched one was heterozygous.