Study on Growth Trend of ‘Chandler’ Walnut(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Author(s):: BO Ying-sheng¹; ZHAI Mei-zhi¹; LI Xin²; 1.Forestry College，Northwest Agriculture and Forestry University，Yangling，Shaanxi 712100；
2.Syngenta (China) Investment Company，Shanghai 200120

Keywords:: ‘Chandler’; ‘Xiangling’; walnut; fruit growth model; growth rate; shape change

Abstract:: Taking 6-year-old‘Chandler’walnut that cultivated from walnut experiment and demonstration stations of Northwest Agriculture and Forestry University as marerials，with ‘Xiangling’ walnut that cultivated at same period as control，through phenological observation and measurement of fruit growth dynamic，growth trend of two kinds of walnut were analyzed，to provide reference to cultivation management to ‘Chandler’walnut.The results showed that，three diameters growth trend of two walnuts had a high correlation with Logistic model，and the statistic test of regression equation reached a significant level；two walnuts diameter growth rate had four synchronized peaks，but the first and fourth diameter growth peaks of ‘Chandler’ walnut were 7 days later than ‘Xiangling’ walnut；in the walnut fast growing period，two walnuts shape index showed a decreasing process，but the decreasing speed of ‘Chandler’ walnut was faster than ‘Xiangling’ walnut.

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Last Update: 2014-12-23