A New Walnut Rootstock Cultivar‘Zhongningyi’

doi:10.16420/j.issn.0513-353x.2025-0235

Acta Horticulturae Sinica ›› 2025, Vol. 52 ›› Issue (S2): 65-66.doi: 10.16420/j.issn.0513-353x.2025-0235

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A New Walnut Rootstock Cultivar‘Zhongningyi’

ZHANG Junpei^1,*, MENG Bingnan², XU Huzhi³, GUO Zhimin³, XU Huimin³, PEI Dong¹

¹State Key Laboratory of Tree Genetics and Breeding,Key Laboratory of Tree Breeding and Cultivation,State Forestry Administration,Research Institute of Forestry,Chinese Academy of Forestry,Beijing 100091,China;
²General Forestry Station of Beijing Municipality（Beijing Forestry Science and Technology Promotion Station）,Beijing 101118,China;
³Forestry Bureau of Luoning County,Luoning,Henan 471700,China

Received:2025-03-18 Revised:2025-07-16 Online:2025-10-28 Published:2025-11-03

Abstract

Abstract: A new walnut rootstock cultivar‘Zhongningyi’was bred by crossing Juglans major and Juglans regia. This cultivar has well-developed root system,vigorous plant growth,distinct apical dominance,rapid growth rate,high grafting affinity. The average annual growth in trunk diameter is 1.8 cm,exceeding its parent plants by ≥ 33%. The rooting rate of green-wood cutting of‘Zhongningyi’is not less than 85%,and the bud grafting survival rate as a rootstock for walnut cultivars is not less than 97%. The grafted walnut cultivar grows strongly and has excellent disease resistance and tolerance to poor soils. This rootstock is suitable for promotion and application in the walnut-growing regions of North China,Northwest China,and East China.

Key words: walnut, rootstock, disease resistance index, cultivar

CLC Number:

S664.1

ZHANG Junpei, MENG Bingnan, XU Huzhi, GUO Zhimin, XU Huimin, PEI Dong. A New Walnut Rootstock Cultivar‘Zhongningyi’[J]. Acta Horticulturae Sinica, 2025, 52(S2): 65-66.

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A New Walnut Rootstock Cultivar‘Zhongningyi’

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