Abstract:

In order to screen suitable greenhouse tomato varieties in Nantong region and to explore new method of comprehensive evaluation tomato varieties, 8 tomato varieties in trial, which had 12 characters involved，were evaluated by DTOPSIS and grey related degree．The results showed that there varieties of Sufen 9, Zhefen 202 and Sufen 8 were the characters, and were able to be popularized and applied in Nantong region. DTOPSIS and grey related degree gave the uniformity result, and the biggest difference of value of Ci in DTOPSIS method was 80.2%, but the biggest difference of the weighting correlation number（ri）in grey related degree had only 11.0%. DTOPSIS was a new method of comprehensive evaluation tomato varieties, and DTOPSIS was better than grey related degree.