关键词: 砂梨, 早熟, 品种

Abstract: ‘Shuduzao’is a new early-ripening fresh-eating pear cultivar derived from a cross between ‘Jinshui’as the female parent and‘Zaosu’as the male parent. The fruit is spindle-shaped with a smooth green skin and an average single fruit weight of 282.2 g. The flesh is white with a small core,relatively fine and crisp texture,abundant juice,few stone cells,and a sweet-sour balanced flavor. It contains soluble solids 14.9%,titratable acid 0.42%,ascorbic acid 0.0639 mg · g^-1,and total phenolics 1 793.6  GAE mg · kg^-1. The fruit exhibits excellent comprehensive characteristics and prominent nutritional quality. In the Chengdu region of Sichuan,flower bud sprouting occurs in late February,and fruit ripens in early July. The fruit development period is about 114 days. This cultivar shows relatively strong disease resistance and good adaptability to high-temperature and high-humidity environments. It is suitable for promotion in plain and hilly pear-growing ecological zones in Sichuan,Chongqing,and similar ecological regions. After entering the stable production period,the yield is approximately 23 025 kg · hm^-2.

Key words: Pyrus pyrifolia, early ripening, cultivar