核桃抗病新品种陇乌仁1号的选育  

Breeding report of a new disease-resistant walnut cultivar Long Wuren No.1

作　　者：辛国 徐丽 任志勇 朱建朝 赵恒 韩赵芳 XIN Guo;XU Li;REN Zhiyong;ZHU Jianchao;ZHAO Heng;HAN Zhaofang(Walnut Research Institute,Longnan Academy of Non-wood Forest,Wudu 746000,Gansu,China;Gansu Walnut Engineering Technolo-gy Innovation Center,Wudu 746000,Gansu,China)

机构地区：[1]甘肃省陇南市经济林研究院核桃研究所,甘肃武都746000 [2]甘肃省核桃工程技术创新中心,甘肃武都746000

出　　处：《果树学报》2024年第12期2654-2657,共4页Journal of Fruit Science

基　　金：甘肃省科技计划项目东西协作专项(23CXNK0004);甘肃省林业科技项目(2015kj028)。

摘　　要：陇乌仁1号是从陇南乌仁核桃实生群体中选育的抗病、丰产、优质核桃晚实新品种。坚果圆形,平均单果质量13.4g,平均核仁质量6.8g,平均核壳厚度1.35mm,平均出仁率50.8%。壳面光滑,果形指数1.07,三径均值34.9mm。缝合线窄平、紧密。核仁饱满,灰褐色,脂肪含量(w,后同)65.8%,蛋白质含量20.6%,风味油香,无涩味。在甘肃武都,9月上旬果实成熟;雌雄异花、同株,雄先型。陇乌仁1号对核桃细菌性黑斑病、炭疽病抗病能力很强。在甘肃省陇南地区可进行生产性栽植,嫁接苗栽植第2年挂果,高接在8年生本砧上,第4年产量1531.2kg·hm^(-2),第5年产量2468.4kg·hm^(-2)。Long Wuren No.1 is a new variety selected from the seedling population of Longnan Wuren walnut(Juglans regia‘Longnan Wuren’)in 2009 for its grey brown seed coat color,high yield,thin shell,robust tree vigor,and strong disease resistance.In 2013,scions were collected and grafted at the walnut genetic resources nursery of Longnan for field trial.In December 2023,it was granted the Plant Variety Rights by the National Forestry and Grassland Administration and named as Long Wuren No.1.The variety exhibited high yield,disease resistance,and exceptional flavor.The tree posture was semi-open tree,and the crown was natural semi-circular.The mixed buds were round,the male flower buds were bare and cylindrical.The fruit was spherical and yellow-green in color,with sparse spots and a smooth surface.The fruit shape was round,the weight of the fruit was 13.4 g,the weight of the nucleo-lus was 6.8 g,the shell thickness was 1.35 mm,and the kernel yield was 50.8%.The fruit shell was smooth.The suture is flat and tightly union.The kernel was full,grey brown with oily flavor and no as-tringency.The content of fat was 65.8%,the content of unsaturated fatty acid was 91.04%,the content of protein was 20.6%.The quality was excellent.The buds bursted in middle March,the full blooming of the male flowers was in late March,the female flowers in early April,the fruits matured in early Sep-tember,and the leaves fell in late November in Wudu,Gansu Province.Long Wuren No.1 showed resis-tance to Xanthomonas arboricola and Colletotrichum gloeosporioides.The average yield in the fourth and fifth years after grafting was 1531.2 kg·hm^(-2) and 2468.4 kg·hm^(-2) respectively.Long Wuren No.1 could be cultivated in plain land,hilly terrain,and terrace weir areas.

关 键 词：核桃 新品种 陇乌仁1号 抗病 

分 类 号：S664.1[农业科学—果树学]