Comprehensive Evaluation Of31Sugarcane Varieties In The Field And Drought Analysis Of The Excellent Varieties

Hainan has become China’s fourth largest sugar producing areas, due to the continuous efforts and development in recent years. but there are still facing some problem, such as, single species, pests and diseases seriously, law level of per unit area yield. Sugarcane has strong ability to resist drought and barren, but because the growing areas of sugarcane encounter drought becoming more and more serious, so the drought-resistant sugarcane varieties are demanded increasingly. Thus, in Hainan cane-growing areas, in order to effectively solve the problem of appeal, some measures such as, accelerate the upgrading varieties and improvement of new drought-resistant cassava varieties must be taken, that will play an important guiding significance for sustainable development of sugar industry in Hainna cane growing areas.In this study, gray correlation analysis methods, the correlation is mainly quantitative traits and yield in2012-2014Regional Trial31sugarcane varieties were analyzed using principal component analysis, fuzzy membership function and cluster analysis method, selected six excellent comprehensive analysis of sugarcane varieties of drought resistance, the results showed that:1. Cane yield and correlation between traits in descending order are:sugar content> single stem weight> height> stalk number> tillering rate> stem diameter> germination rate> perennial hair strain rate> brix> sugar. Reflects the relationship between the primary and secondary traits of sugarcane yield. Thus, in the Regional Trial Hainan to promote high-yield, high-sugar new varieties, the sugar content should be considered first.2. In terms of comprehensive comparison of varieties associated with greater than0.7tested a total of six varieties, namely Yuetang55(r=0.8220), Yunzhe06-407(r=0.7272), Funong39(r=0.7270), Liucheng05-136(r=0.7137), ROC22(r=0.7124), Yuegan26(r=0.7019).3. By principal component analysis and cluster analysis, seven sugarcane varieties to study drought resistance, each individual indicators integrated into three separate comprehensive index, representing95.490%of the amount of information of all data. Using cluster analysis combined with observations of morphological index, the seven sugarcane varieties are divided into three categories. Strong performance which ROC22drought resistance; Yunzhe06-407, Yuegan26and Funong39exhibited moderate agricultural drought resistance; while Yuetang55, Liucheng05-136and ROC16showed weak drought resistance.7sugarcane seedling drought resistance from strong to weak to:ROC22> Yunzhe06-407> Yuegan26> Funong39> Yurtang55> Liucheng05-136> ROC16.4. By principal component analysis and cluster analysis, seven sugarcane varieties long stretch of drought resistance research, the nine individual indicators integrated into three separate comprehensive index, representing83.969%of all data information amount. Using cluster analysis combined with observations of morphological index, the seven sugarcane varieties are divided into three categories. That ROC22and Yunzhe06-407as a class, showing a strong drought resistance; Yuetang55as a class, showing moderate drought resistance; Funong39, Yuegan26, Liucheng05-136and ROC16as a class, performance poor drought resistance.7sugarcane varieties of long-term drought stretched from strong to weak to:ROC22> Yunzhe06-407> Yuetang55> Funong39> Yuegan26> Liucheng05-136>ROC16.5. On five indicators measured were rehydrated membership function analysis using the membership function equation, find its membership function values. Depending on the size of the membership function values for different varieties of sugarcane long stretch of water recovery capability sort of compensation.7sugarcane varieties after a long stretch of water recovery from strong to weak ability is:ROC22> Yuetang55> Yunzhe06-407> Yuegan26> Liucheng05-136> ROC16> Funong39.