利用GGE双标图划分长江流域棉花纤维品质生态区

许乃银, 李健

Ecological Regionalization of Cotton Fiber Quality Based on GGE Biplot in Yangtze River Valley

XU Nai-Yin, LI Jian

图1 2000-2012年长江流域棉花纤维品质生态区划分模式的GGE双标图此图是基于环境中心化Centering = 2、标准差定标Scaling = 1的环境和性状两向表, 采用聚焦于环境的特征值分析法SVP = 2。 Len 、 Str 、 Mic 、 El 、 Rd 、 +b 、 Un 和 Sci 分别表示纤维长度、比强度、马克隆值、伸长率、反射率、黄度、整齐度和纺纱均匀指数。正体大写字母为试验环境代号, 各试验环境的全称详见表1。椭圆形虚线包围的试验环境与图2聚类分析的前3个层次的分类相同。I、II、III分别表示第I、第II和第III生态区。
Fig. 1 GGE biplot analysis of ecological regionalization pattern based on cotton fiber quality characteristics in YaRV from 2000 to 2012 The biplot was based on environment-centered Centering = 2 and standard deviation scaled Scaling = 1 enrionments and fiber traits two way datasets, using environment-focused singular value portioning SVP = 2 method. Len , Str , Mic , El , Rd , +b , Un , and Sci in italics stand for fiber length, fiber strength, micronaire value, elongation, reflectance, yellowness, uniformity index and spinning consistency index, respectively. Symbols in regular upcase stand for test environment codes around the dotted ellipsesas which correspond with the codes given in Table 1, which are members of the same group at the three levels in Fig.2. I, II, and III stand for the three ecological regions, respectively. PC1 = 43.7%, PC2 = 27.0%, Sum = 70.7%; Transformation = 0, Scaling = 1, Centering = 2, SVP = 2.