高产板栗新品系“湘栗7号”——农艺性状和生物学特性

"湘栗7号"是我们从湖南省临湘市坦渡乡发现的板栗新品种。栗苞黄绿色,椭圆或近圆形;坚果椭圆或圆形,红褐色,单粒重13.5~17.5 g,果肉黄白色,细腻、糯性,味甜;出仁率78.5%,含水率49%~51%,淀粉54%,总糖13%,蛋白质8.7%,脂肪6.4%;每平方米冠幅面积产量0.41~0.63 kg;丰产稳产性强,大小年产量变幅在40%左右;出籽率36%~38%;抗桃蛀螟、栗瘿蜂、栗疫病;在湖南,坚果9月下旬至10月上旬成熟,南方板栗适栽区都可栽植。

Agronomic characters and biological characteristics of a new high-yield chestnut variety of 'Xiang Li No.7'

＇Xiang Li No.7＇ is a new variety of chestnut discovered at Tandu Town,Linxiang City,Hunan Province.The chestnut bract is yellow-green,elliptic or suborbiculate.Nut is elliptic or round,reddish-brown,and the weight of single nut is 13.5~17.5g.The flesh is yellow-white,fine texture,waxy and sweet.The kernel ratio and water content are 78.5% and 49%~51% respectively.And the contents of starch,total sugar,protein and fat are 54%,13%,8.7% and 6.4% respectively.The yield of crown per square meter is 0.41~0.63kg.This variety has high and stable yield,the variation of annual yield is about 40%,and the rate of seed yield is 36%~38%.This variety also performs obvious resistance to peach pyralid moth,chestnut gall wasp and chestnut blight.The nuts get ripe from late September to early October in Hunan Province.＇Xiang Li No.7＇ can be planted in all chestnut adaptation areas in the south of China.