基于GGE双标图的长江中下游中籼迟熟区试品种丰产适应性及抗稻瘟病性评价OA北大核心CSTPCD

In order to evaluate the most stable rice blast resistance and its stability and high yield adaptability in the middle and lower reaches of the Yangtze River,the yield data and rice blast resistance data of rice varieties were comprehensively analyzed based on GGE biplot.A total of 13 medium Indica rice varieties planted in 16 test sites of the middle and lower reaches of the Yangtze River were selected.The results showed that:The average yield of'Shuangliangyouyuenongsimiao'was 0.95 kg/hm2 and the comprehensive index of identification was 3.2.It was an ideal variety with high yield,good stability,and high resistance to rice blast.The average yield of'Chun 9 Liangyou 70'0.97 kg/hm2 was high with medium stability and strong resistance to rice blast.Its comprehensive index of identification was 3.3.This variety has the best yield performance in Yueyang of Hunan,Huanggang of Hubei and Wuhu of Anhui,reaching 1.09,1.16 and 1.06 kg/hm2,respectively.This variety showed the best yield performance in multiple locations,which meant an ecologically adaptable variety.The yield of'Shenheliangyou 1133'0.93 kg/hm2was higher,but it was low stability and sensitive to the environment.The average comprehensive index of rice blast resistance identification was 4.0.This variety was suitable for promoting planting in specific locations such as Gao'an,Jianyang,Wenzhou,etc.The ideal test sites selected for comprehensive evaluation based on GGE biplot were Wuhan,Huanggang,Xiuning,Ji'an and Wenzhou because these sites had strong differentiation of varieties and good representation of ecological regions..