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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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Abstract 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.
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Keywords
walnut
shell
imperfect shell development (ISD)
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Corresponding Author(s):
LI Baoguo,Email:lbg888@163.com
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Issue Date: 05 March 2009
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