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Variety breeding method for high-quality walnut

A walnut and variety technology, which is applied in the field of high-quality walnut variety breeding and breeding, can solve the problems of low economic benefits and low walnut yield, and achieve the effects of improving living conditions, high oil content, and expanding employment

Inactive Publication Date: 2017-02-01
青川县林业和园林局
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Problems solved by technology

[0009] The invention provides a method for breeding and breeding high-quality walnut varieties to solve the problems of low walnut yield and low economic benefits in Qingchuan County

Method used

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  • Variety breeding method for high-quality walnut
  • Variety breeding method for high-quality walnut
  • Variety breeding method for high-quality walnut

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Embodiment 1

[0038] This walnut selection work involves 36 towns in Qingchuan County, with geographical coordinates between 104°03′42″-105°37′5″1 east longitude and 32°08′25″-32°56′06″ north latitude. The average temperature is 13.7°C, the active accumulated temperature is 1058.5°C-5511.5°C, and the average temperature above 10°C lasts for 233 days. ℃, the lowest -9 ℃, frost-free period of 233 days. The region has abundant rainfall, mostly concentrated in summer and autumn. The annual average precipitation is 993mm, the maximum is 1737mm, and the minimum is 522mm, which is higher than the annual land surface evaporation of 569.6mm. The rainfall increases with the elevation of the altitude. The sunshine hours are 1100-1500h. The annual average humidity is 75%, and the average humidity in the forest is 85%.

[0039] Preliminary selection of excellent walnut trees: in walnut natural forests, select plants with complete tree shape, open canopy, good growth, strong tree body, over 20 years ol...

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Abstract

The invention discloses a variety breeding method for a high-quality walnut. According to the method, triple strict screenings, including primary screening for high-quality walnut trees, re-screening for the high-quality walnut trees and last screening for the high-quality walnut trees, are performed. The breeding is expanded in the manner of grafting. The bred walnut has the characteristics of moderate peel thickness, high quality, synchronogamy, high yielding ability, early fruit ripe period, plump walnut, high oil concentration (71.38%), no obvious over-year resulting phenomenon, high stability, and the like, and is principal in medium-short branch result.

Description

technical field [0001] The invention relates to the technical field of walnut planting, in particular to a method for breeding and breeding high-quality walnut varieties. Background technique [0002] Walnut, also known as Qiang peach, is said to have been brought back by Zhang Qian of the Han Dynasty when he traveled to the Western Regions. Since it was introduced to Chang'an, it has gradually been widely cultivated in the north, and spread in the Sichuan Basin from Jianmen and Yinping in the south. According to Qingchuan County Chronicles, in January 1979, an ancient tomb group was discovered at the foundation of Wang Wencong’s house in the suburb of Qiaozhuang. The wooden tablets in the tomb were written in the second year of Qin Wuwang (307 BC). 14 walnuts (now preserved in Sichuan Provincial Museum). Qingchuan County has a very long history of walnut cultivation, at least 2,300 years old. The county is also very rich in walnut germplasm resources and is one of the mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G17/00
CPCA01G17/005
Inventor 白杰健向明亮吴佐英向国宏赵荣
Owner 青川县林业和园林局
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