应用GGE双标图分析甘蔗品种(系)的产量和品质性状

Analysis of Yield and Quality Traits in Sugarcane Varieties (Lines) with GGE-Biplot

采用GGE双标图分析7个甘蔗参试品种(系)在7个试点的产量和品质性状。结果表明,云蔗05-51(YZ05-51)为单茎产量高且稳定性强的品种,福农39(FN39)和柳城03-1137(LC03-1137)的单茎产量较高,但稳定性较差;福农38(FN38)、粤甘35(YG35)和新台糖22(ROC22)有效茎数较高,但稳定性较差;福农39(FN39)和云蔗05-51(YZ05-51)为蔗茎产量较高且稳定性强的品种,福农38(FN38)和柳城03-1137(LC03-1137)蔗茎产量高,但稳定性较差;福农39(FN39)和赣南02-70(GN02-70)为甘蔗蔗糖分较高且稳定性强的品种,云蔗05-51(YZ05-51)和福农38(FN38)甘蔗蔗糖分较高,但稳定性较差;福农39(FN39)为产糖量较高且稳定性较强的品种,福农38(FN38)、云蔗05-51(YZ05-51)和柳城03-1137(LC03-1137)的产糖量较高、但稳定性较差。云南瑞丽和云南临沧2个试点单茎产量的代表性和区分力较强;云南保山和广西来宾2个试点有效茎数的代表性和区分力较强;广西崇左和云南临沧2个试点蔗茎产量的区分力较强;广西百色和柳州2个试点甘蔗蔗糖分的区分力较强;广西百色和云南临沧2个试点产糖量的区分力较强。

GGE （genotype main effect plus genotype-environment interaction） biplot analysis, based on principal component analysis （PCA）, is an effective method to assess the multi-environment trials （METs）. It allows a full exploration of GxE interac- tion, variety yield stability, and test-site suitability. In the present study, we applied GGE-biplot to evaluate the genotype effects and GxE interaction of sugarcane main traits and at the same time, analyze the stability of yield and quality traits, and representa- tiveness and discrimination of testing site, with seven sugarcane varieties （lines） planted in seven different testing sites. The re- sults showed that YZ05-51 had high yield per stalk and better yield stability than the other varieties （lines）, while FN39 and LC03-1137 had high yield per stalk but low stability. FN38, YG35, and ROC22 had high stalk numbers but low stability. FN39 and YZ05-51 had high cane yield and good stability, while FN38 and LC03-1137 had high cane yield but low stability. FN39 and GN02-70 had high sucrose content and good stability, while YZ05-51 and FN38 had high sucrose content but low stability. FN39 had higher sucrose content and better yield stability, while FN38, YZ05-51, and LC03-1137 had high sucrose yield but low stabil- ity. Ruili City and Lincang City in Yunnan Province had better representativeness and discrimination in yield per stalk, while Baosan City in Yunnan Province and Laibing City in Guangxi Province had better representativeness and discrimination in stalk numbers; Chongzuo City in Guangxi Province and Lincang City in Yunnan Province had better discrimination in cane yield, while Baise City and Liuzhou City in Guangxi Province had better discrimination in sucrose content; Baise City in Guangxi Province and Lincang City in Yunnan Province had better discrimination in sucrose yield. This study demonstrates a simple and effective method for analyzing data, and evaluating the yield stability and adaptability of sugarcane varieties （lines） involved in national regional trials and favorite test sites.