关键词: 苹果, 早熟, 抗病, 品种

Abstract: ‘Yanqingyu’，a new early-ripening green apple cultivar，is derived from the cross between ‘Jinshuai’and‘Lanpengwang’. The fruit is nearly round with the fruit shape index of 0.85 and an average single fruit weight of 226.5 g；The peel is green and smooth without rust. The flesh is yellow white，crisp， rich in flavor. The hardness is 8.4 kg · cm-2，the soluble solids content is 14.2%，the vitamin C content is 31.9 mg · kg-1，and the titratable acid content is 0.28%. In the Yantai area of Shandong Province，the fruit ripens in late August，with a fruit development period of about 120 days and an average yield of 4 000 kg · hm-2. It has strong disease resistance，high resistance to apple trunk ring and rot disease，and is suitable for baggless cultivation. 

Key words: apple, early-ripening, disease resistant, cultivar