Breeding report of a new late ripening apple cultivar 'Yueguan'
'Yueguan'is a late-season,table apple with bright colors,excellent appearance,thick taste,good quality,long storage,strong early-fruit,high-yielding,cold-resistance and wide suitable-area.The seeding was derived from a cross between'Hanfu'and'Yueshuai'in 1996 at Liaoning Province Institute of Pomology.It was initially selected in 1996,bred in 1997,fixed planting 768 in 1999 and fruited numbered 410-20.After regional adaptability testing at more than ten sites (including Dalian,Wafangdian,Pulandian,Yingkou of Liaoning etc and Jilin,Heilongjiang,Hebei,Shanxi,Shangdong Province and so on) in 2008.In 2014,applied for provincial cultivar file.Tree of'Yueguan'is open tree gesture and vigorous.Main branches are glabrous and dull grey-brown color.Young branches are yellow-brown with less pubescent.Matured leaves are dark-green and young leaves are green.8.8 cm long,5.5 cm wide,sharply serrated.There are five flowers on each unit in average,and flowers doubled.Flower is pink white,4.5 cm across.Seed are brown.'Yueguan'Fruit is mainly round,has yellowish-green peel and light ware surface.Its flesh is yellow-white,crisp,rich juice,fine texture and aroma.The average fruit weight 225 g,maximum fruit weight 480 g,fruit shape index 0.86;8 seed numbers per fruit.The content of soluble solid is 15.4％,the soluble sugar content is 12.6％,the content of total acid is 0.39％,average fruit firmness is 9.8 kg· cm-2,Vitamin C is 0.043 8 mg· g-1.Quality is excellent.The fruit development period is 165 d and it matures at the end October in Xiongyue Liaoning area;germination rate is 62.3％,branching ability is medium.The resistance to cold is between its parents,stronger than'Yueshuai'and weaker than'Hanfu'.It is resistant to powdery mildew,Valsa mali,early-falling disease and trunk canker.The fruit has very long storage-life,cold storage life is 6 months,after storage the fruit is quite good quality.It is a late.mature cultivar with durable storage.Suitable cultivation area is similar like Dashiqiao and south of Linghai.this variety can bear fruits 3 years after planted,four-year trees has high yield potential of 19 335 kg'hm-2.Orchard should choose neutral sandy soil which is flat or less sloping and has ability of moisture and fertilizer retention,spacing in the rows and spacing between rows are 3 m×4 m,the configuration of pollinizer is'Fuji''Gala''Golden Delicious' 'Yuanyanghong'and'Hanfu'.Tree figure of standard rootstock is suitable freedom spindle shape and that one of close planting garden is suitable long and thin spindle.This cultivar branches are soft and spread.It is fit for shaping and blooming to fruit.After fruiting,it will refresh branches,keep fruit abilities of branches and improve quality of fruits.Limited reasonable load within 45 000 kg· hm-2.Spraying calcium on leaves and fruits can effectively reduce the occurrence rate of 'Yueguan'water core.Generally fruit bags can be taken off before 15-20 days of mature,and color of fruits is best.Fruits can be picked in the late of October.
国家科技期刊平台
NSTL
万方数据
维普
