Breeding of a New Watermelon Variety 'Longqingchunfen'

'Longqingchunfen' watermelon was a hybrid variety bred by Daqing Branch of Heilongjiang Academy of Agricultural Sciences.It had resistance to low temperature and weak light,and was suitable for cultivated in cold plastic canopy in Heilongjiang Province in early spring;the period from fertilization to picking of commodity fruit covered about 35 d;the fruit was round and deep green fruit peel with 16 black-green stripes.Fruit powder was dense,fruit navel was small.Depth of fruit peel was 0.6 cm with good tenacious,and it was suitable for storage and transportation;pulp was pink and hard.The weight was about 1.5～2.2 kg per fruit with 11% sugar content in centre part and 10% sugar content in edge part.'Longqingchunfen' had good shape and small seed and tasted well.The yield was 3 420 kg/667m2 by means of cold plastic canopy in early spring.