Cultivar Evaluation and Essential Test Locations Identification for Sugarcane Breeding in China
Figure 1
Adaptability of sugarcane cultivars based on GGE-Biplot analysis. Cultivars with the longest distance are linked to the original point to form a multilateral figure and vertical lines are drawn to each side of the figure to divide the whole biplot into several fan-shaped regions and to assort evaluation sites into different groups. Within each group, the cultivars located at the apex of the multilateral figure represent the best ones among the cultivars within the fan-shaped region: (a) 2011 plant crop cane yield; (b) 2012 ratoon crop cane yield; (c) 2011 plant crop sugar yield; and (d) 2012 ratoon crop sugar yield. PC1 = principal component 1; PC2 = principal component 2. Numerical codes for evaluation Sites: 1 = Guangxi Baise; 2 = Guangxi Chongzuo; 3 = Guangxi Hechi; 4 = Guangxi Laibin; 5 = Guangxi Liuzhou; 6 = Yunnan Baoshan; and 7 = Yunnan Lincang. Codes for cultivars: Fn39 = Funong 39; Fn38 = Funong 38; Yz06-407 = Yunzhe 06-407; Yz05-51 = Yunzhe 05-51; Lc03-1137 = Liucheng 03-1137; Gn02-70 = Gannan 02-70; and Roc22 = Roc22.
