Selection of Superior Varieties (Lines) of Seed-watermelon Based on Growth Pperiod and Economic Yield

【Objective】 To further screen out fine seed-watermelon varieties (lines), and exploit the development potential of Xinjiang seed-watermelon.【Method】In this study, the growth period and economic yield of 12 seed-watermelon varieties (lines) were recorded by 11 indexes, and comprehensive evaluation was carried out by principal component analysis.【Result】The longest period of whole growth period was 1612, the average was 119.33 d, the shortest growth period was 1607, 1608, and the average was 112 d. The weight of the line 1614 was the highest (24.53 g). The results of principal component analysis showed that the highest score of economic output was 1614 and 1612, the highest score of growth period factor was 1614, the highest score of nutrition growth determinant was 1618, the highest score was 1612, followed by 1614.【Conclusion】The growth period is closely related to the growth and development of economic output and the seed melon, 100 grain weight and whole the growth period was positively related to the grain number and flowering period was negatively correlated with flowering; grain weight was negatively correlated; varieties (lines) 1614, 1612 comprehensive evaluation respectively ranked first and second, respectively, which proved that they can be used as a key material for its proper growth period, good economic yield and high yield potential.