优质高抗核桃新品种‘洛核1号’的选育  

Breeding report of a new walnut cultivar ‘Luohe No. 1’ with high quality and disease resistance

作　　者：马贯羊 苗利峰 王树和[2] 陈向阳 李灿 马克义 刘莹莹 MA Guanyang;MIAO Lifeng;WANG Shuhe;CHEN Xiangyang;LI Can;MAKeyi;LIU Yingying(Luoyang Academy of Agricultural and Forestry Science,Luoyang 471023,Henan,China;College of Forestry,Henan University of Science and Technology,Luoyang 471003,Henan,China)

机构地区：[1]洛阳农林科学院,河南洛阳471023 [2]河南科技大学林学院,河南洛阳471023

出　　处：《果树学报》2020年第5期776-778,共3页Journal of Fruit Science

基　　金：河南省科技攻关项目(162102110080)。

摘　　要：‘洛核1号’是从‘彼特罗’ב中林5号’杂交子代中选育的高抗晚熟核桃新品种。坚果长椭圆形,大,平均单果质量16.46 g,单个核仁质量8.38 g,壳厚1.30 mm,出仁率达50.81%。壳较光滑,纵径47.33 mm,横径35.50 mm,侧径41.00 mm。缝合线略凸起,结合紧密。核仁饱满,黄色,口感浓香,无涩味,腹缝线结合紧密。果实生育期126 d,在洛阳地区9月15号左右成熟,侧芽结果率80%。‘洛核1号’对核桃炭疽病和核桃细菌性黑斑病表现为抗病,耐干旱、耐瘠薄能力较强。在河南省广大地区可进行生产性栽植,栽植当年可见雌花,第二年见果,高接大树第4年666.7 m^2平均产量203.72 kg。Walnut(Juglans regia L.) is a valuable woody nut and oil tree planted worldwide. In recent years, walnut has been severely damaged by anthracnose(caused by Colletotrichum spp.) and black spot(caused by Xanthomonas campestris pv. juglandis) with significant yield losses in China. Considering the severity of the diseases on walnut, a new walnut cultivar having high quality and disease resistance should be developed.‘Luohe No. 1’is a new walnut cultivar, which was bred by crossing walnut cultivar‘petro’as the female parent and‘Zhonglin 5’as the male parent in 2003 at experimental field.Six hundred and nineteen hybrid seedlings were obtained by sowing hybrid seeds in 2004. A superior individual with good eating quality, stable high yield and disease resistance was screened out in the hybrid offspring through good strain selection. From 2012 to 2018, regional tests were conducted at Luoyang, Ruyang, Yima and Qixian in Henan province. Regional tests showed that the genetic characteristics of the superior line were stable. We applied for the registration as a new cultivar in August 2018 and got identification certificate from Trees Variety Approval Committee of Henan province in December2018, and named‘Luohe No. 1’. The tree of‘Luohe No. 1’is medium-sized with upright tree body and strong branches. The type of leaves are odd pinnate compound leaves. The leaflets are long elliptic and opposite. There are 9-11 leaflets attached along an extension of the petiole. The main veins of leaflets are asymmetric on both sides, narrow on the inner side and wide on the outer side. The fruit shape is oval. The average weight of fruit is 16.46 g. The shell thickness is 1.30 mm. The shell is relatively smooth, with a longitudinal diameter of 47.33 mm, a transverse diameter of 35.50 mm and a side diameter of 41.00 mm. The suture is slightly raised and tightly combined. The average weight of kernel is8.38 g. The kernel yield is 50.81%. The kernel is full, yellow, taste strong, no astringency, and very easy extraction

关 键 词：核桃 新品种 '洛核1号’ 

分 类 号：S664.1[农业科学—果树学]