' Jili 1', a new chestnut variety with early precocity and high yield
GUO Yan
ZHANG Shuhang
LI Ying
ZHANG Xinfang
WANG Guangpeng
Abstract：'Jili 1' is a middle-season,table chestnut with excellent appearance.The seeding was derived from a cross between 'Yanming' and 'Yanshanzaofeng' in 2002 at Changli Institute of Pomology,Hebei Academy of Agricultural and Forestry Sciences.It was initially selected in 2005 for its very early fruiting,high quality,high yield,strong stress resistance.After regional adaptability testing at three sites of Hebei province (including Changli,Xinglong and Kuancheng) over nine years from 2006 to 2015,it was finally selected in 2016.'Jili 1' is a tall tree,vigorous,ramose crown and semi-open tree gesture.Main branches are glabrous and brown,young branches are glabrous and grey-white.Matured leave is dark-green,crenately serrated,elliptic,acuminate,17.5 cm long,8.0 cm wide,and veins are densely pubescent.Catkin is ivory yellow,10.0 cm long.Flower shape is upright.Bur shape is ellipse.Spine bundle is green-yellow,hard,intermediated density,and large angle.The nut is brown,its luster is good,and side nut shape is ellipse.Its flesh is fine and smooth.The average fruit weight 8.40 g,maximum fruit weight 13.10 g.2.40 nuts per bur.The water content is 20.1％,the soluble sugar content is 20.1％,the starch content is 49.8％,the protein content is 4.85％,and vitamin C is 0.325 mg· g-1.Quality is excellent.The fruit development period is 90 d and it matures at the middle of September in Yanshan mountain areas of Hebei province.8.4 catkins per fruit branch.The germination rate of bearing base shoot is 45.7％,the proportion of fruit branches is 71％.It is resistant to barren,cold,drought,red mite and chestnut fruit-borer,and high resistant to chestnut blight.The fruit has very long storage-life,after storage of 8 months,the nut rotting rate is only 3.7％.Suitable cultivation area is mountain and hilly area cultivated Yanshan chestnut in the north of China,this variety can bear fruits next year after grafted,trees grafted after three years has high yield potential of 4 730.4 kg· hm-2.This variety is suitable for the steep slope mountain with barren soil,spacing in the rows and spacing between rows are 4 m×4 m.The configuration of pollinizer is ' Dabanhong' and ' Yanjing'.
Keywords：ChestnutNew cultivar' Jili 1'Early precocityHigh yield
Publication Date：2017-01-01
Online Publishing Date：2025-08-15(First online date of this platform, not the publication date of the document)
Pages：4( 1065-1068 )