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Fig. 2 | BMC Plant Biology

Fig. 2

From: Intraspecific variation of residual heterozygosity and its utility for quantitative genetic studies in maize

Fig. 2

QTL analysis of RH hotspots and functional inferences for phenotypes of agronomic traits. (a) Distribution of heterozygosity rates within each RH hotspot. (b) Overview of genome-wide hQTLs for RHR in RH hotspots. Only the 6 populations with detected RH hotspots are illustrated. The blue vertical rectangles indicate the genetic position of the RH hotspots. (c) Phenotypic functions of the RH hotspots with a cis-hQTL. RH hots3 was coordinated by itself per se (i.e., acting as a cis-hQTL), and within the hotspot, the heterozygotes exhibited a significantly greater upper leaf angle (ULA) than any homozygote (P ≤ 0.01). (d-f) Phenotypic role of RH hotspots with a trans-hQTL. The heterozygotes within RH hot2 exhibited a marginally greater tassel branch number (TBN) than any homozygous type (P ≤ 0.05), but two homozygous types showed basically the same TBN (P = 0.08); data represent the mean ± standard error (se.) (d) A trans-hQTL regulates the 5 Mb-distant RH hot2. In this trans-hQTL, the K22 allele results in a significant increase in RHR relative to the BY815 allele at Hot2 (P = 7.2 × 10− 8); data represent the mean ± se. (e) In contrast, the K22 allele leads to a significantly greater tassel branch number (TBN) than the BY815 allele (P = 0.02) (f)

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