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‘Qinquan 1’, a new apomixis walnut cultivar

Published online by Cambridge University Press:  10 February 2010

Wu Guoliang ,
Liu He ,
Liu Qunlong ,
Wang Yong  and
Zhang Pengfei
Wu Guoliang*
Affiliation:
 Coll. Hortic. Sci., Henan Agric. Univ., Zhengzhou, China 450002 Coll. Hortic. Sci., Shanxi Agric. Univ., Taigu, China 030801 
Liu He
Affiliation:
Coll. Hortic. Sci., Shanxi Agric. Univ., Taigu, China 030801 
Liu Qunlong
Affiliation:
Coll. Hortic. Sci., Shanxi Agric. Univ., Taigu, China 030801 
Wang Yong
Affiliation:
 Inst. Fruit Sci., Shanxi Acad. Agric. Sci.,  Taigu, China 030815
Zhang Pengfei
Affiliation:
Coll. Hortic. Sci., Shanxi Agric. Univ., Taigu, China 030801 
*
*Correspondance et tirés à part
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Abstract

Introduction. Shanxi province is one of the main walnut production areas in the North of China. The cultivated species mainly belong to a Chinese walnut tree population, named ‘Mian Hetao’ (Juglans regia L.), which reproduces from seedlings. Although the walnut apomixis characteristics were discovered very early and have an important breeding value, this variety has not yet been reported as an important breeding resource. Cultivar origin. ‘Qinquan 1’ is a new cultivar of walnut tree (Juglans regia L.), selected in 1982 from walnut seedling resources in the department of Shanxi, in the North of China. This cultivar is characterized by apomixis, the ratio of which can reach 24.7%. After more than 20 years of selection and many local experiments, its characteristics were given and the cultivar was certificated in March 2007. Cultivar characteristics. Characteristics of ‘Qinquan 1’ fruits, trees, development stages, production and the apomixis rate are given. Main cultural techniques. Many characteristics of this new cultivar are suitable for its growth in the middle or south Loess Highlands (China), where the annual average temperature is 9~13 °C and rainfall is above 450 mm. The cultivar is also cultivable in the North of China where the soil and climate conditions resemble those of the original area. Other recommendations are given for improving the ‘Qinquan 1’ tree growth.

Keywords

ChineJuglans regiasélectionapomixieChinaJuglans regiaselectionapomixisChinaJuglans regiaselecciónapomixis
Type
Technical paper
Information
Fruits , Volume 65 , Issue 1 , January 2010 , pp. 39 - 42
Copyright
© 2010 Cirad/EDP Sciences

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References

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