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Gene contraction of β‐xylosidase gene family related to sucrose metabolism in Cymbidium sinense. (a) The phylogenetic tree of CH1 genes among C. sinense, D. catenatum, A. shenzhenica, P. equestris, O. sativa and Arabidopsis. (b) Chromosomal localization of CsCH1 genes. (c) Gene expression patterns of CsCH1 genes between WT and leaf variegation mutant. (d) Control of leaf colour in C. sinense.
