http://dx.doi.org/10.1590/1678-4499.0126
Evaluating sugarcane families by the method of Dynamic Technique for Order Preference by Similarity to Ideal Solution (DTOPSIS) Peifang Zhao (1,2); James Todd (3); Jun Zhao (1,2); Jiayong Liu (1,2); Li Yao (1,2); Chaoxiang Hou (1,2); Fenggang Zan (1,2); Hongming Xia (1,2); Kun Yang (1,2); Caiwen Wu (1,2); Xuekuan Chen (1,2*) (1) Yunnan Sugarcane Research Institute, Yunnan Academy of Agricultural Sciences, No.363 east lingquan road, Kaiyuan, Yunnan 661699, China. (2) Yunnan Key Laboratory of Sugarcane Genetic Improvement, Kaiyuan, Yunnan Province 661699, P. R. China. (3) USDA-ARS Sugarcane Field Station at Canal Point, Canal Point, Florida, United States. (*) Corresponding author:
[email protected]
Abstract Enlarging the quantity of seedlings of elite families and discarding inferior sugarcane (Saccharum spp.) families could improve sugarcane breeding and selection efficiency. The feasibility of using the method Dynamic Technique for Order Preference by Similarity to Ideal Solution (DTOPSIS) method was explored to identify superior sugarcane families. Data on 5 traits: Brix, millable stalks per stool (MS), stalk diameter (SD), plant height (PH), and percent pith were collected from two family trials having 17 families and two check cultivars at two sites including plant-cane and first-ratoon crops. The rest of the seedlings were planted into field for routine selection in the regular program. The DTOPSIS method calculates a comprehensive index (Ci) which expresses the closeness of a solution to the ideal solution and was used in this study to test the distance of each family to the ideal family. The Ci of the families was compared to the family selection rate in the regular program by determining the selection rate at Stage 1 to Stage 4 for each family in the regular program. The result indicated that the Ci values calculated from family trials were significantly (p
