Comprehensive Evaluation for High Temperature and Humidity Resistance in Pepper(Capsicum annuum L.)Budding
Using a newly-developed combination of PCA(principal component analysis)and TOPSIS(technique for order preference by similarity to ideal solution),a study was carried out to evaluate and classify the high temperature and air humidity resistance in hot pepper varieties at the budding stage. Results showed that 10tested varieties could be divided into four classes of tolerance. The most tolerant varieties were 592 and 597,followed by 114,512,435. The less tolerant were 451,115,590 and 499. The rest variety 591 was not tolerant at all. The conclusion of PCA-TOPSIS was similar to those assessed in open filed in summer. The PCA-TOPSIS method is so simple and convenient that it can be easily used to rank different varieties' resistance by multiple traits.