Breeding report of a new pear variety Miyu

Abstract: Miyu is a new late ripening pear variety with high-quality bred by Changli Institute of Pomology, Hebei Academy of Agriculture and Forestry Sciences from a crossing between Mili and Huangguan(Pyrus bretschneideri) made in 2008. The hybrid individual 09-09-038 was initially selected as a superior individual in 2013 for its perfect appearance and high quality. The field trials were made at three sites of Hebei province(including Changli county, Luannan county and Botou city) from 2014 to2019. It was finally examined and named as Miyu in 2020. The young trees are vigorious, the posture of the tree is open. The annual branches are yellow-brown in color. The leaf buds are slanting. The color of tender leaves is yellow green. The mature leaves are ovate with serrate. There are 5-7 flowers in each inflorescence. The flowers are pink, and the relative position of petals is overlap, the position of stamen with many pollens is lower than that of stigma. The fruit shape is globose. The ground color of the fruit is yellow. The average single fruit weight is 258.42 g. The fruit length and diameter are 6.366 cm and7.430 cm. The flesh is white, crispy, juicy andtic. The fruit texture is fine with, few stone cells. The fruit core is small. The content of total soluble solids is 14.0%. The flesh firmness is 5.95 kg·cm-2. The quality is excellent. The cold storage life of the fruit is more than 180 days. The trees is precocious. The fruits mainly bear on the short branches. The fruit setting rate is high. The ability of continuous fruiting is strong. The yield is 3420 kg per 666.7 m2 in the seventh year at a density of 1 m×4.5 m. In Changli area of Hebei province, the flowering time is in mid-April and the fruit maturing time is in middle-late September. The fruit development period is around 150 days, and vegetative growth lasts about 240days. The variety has good resistance to stresses and good environmental adaptability. The suitable pollinizer cultivars are Xuehuali and Yali. It is suitable for close planting with spindle and cylindrical shape.Miyu is suitable for planting in Hebei province, and in pear producing areas with ecological conditions similar to Hebei.