mandarin orange
6.74-1 trifloliate orange, Purpelflowered Ichang Papda, Rusk citrange,Yuzu, Troyer citrange, Jiangnangan mandarin, No. 92 tangerine and Xiecheng yuzu. Four per-selected dwarfing indices: percetage of root bark, total area of root trachea, palisade tissue/ sponge tissue ratio, stoma desity, and 4 auxiliarilly preselected indices: percentage of cortex, percentage of xylem, trachea density in the root, trachea number in the main vein of the leaf, were screened.

