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Frontiers of Agriculture in China

ISSN 1673-7334

ISSN 1673-744X(Online)

CN 11-5729/S

Front Agric Chin    2009, Vol. 3 Issue (1) : 75-77     DOI: 10.1007/s11703-008-0062-y
Research Article |
The main factors causing “imperfect shell development” (ISD) in thin-shelled walnut
Baoguo LI(), Suping GUO, Guohui QI
Forestry College, Agricultural University of Hebei
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Effects of solar radiation, rainfall and cultivars on “imperfect shell development” (ISD) of the thin-shelled walnut were studied by means of field investigation and weather data comparison. The results showed that cultivars were the main factor causing the ISD of the thin-shelled walnut. Among the cultivars, Shangsong 6 was the most sensitive one, whose percentage of imperfect shell attained 67.3%, followed by Xiangling (52.7%). However, the rate of imperfect shells in Zhonglin 5 was only 20.9%. It was suggested that the main environmental factors contributing to the ISD of the thin-shelled walnut were sunlight intensity and rainfall during the shell-hardening stage.

Keywords walnut      shell      imperfect shell development (ISD)     
Corresponding Authors: LI Baoguo,   
Issue Date: 05 March 2009
URL:     OR
typeXianglingYuanfengShangsong 6Liaoning 1Zhonglin 5
percentage of perfect shell/%47.3C62.4B32.7D64.1B79.1A
percentage of imperfect shell/%52.7B37.6C67.3A35.9C20.9D
Tab0  Shell development conditions of different walnut cultivars in 2004
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