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ACTA HORTICULTURAE SINICA ›› 2004, Vol. 31 ›› Issue (1): 7-10.

• 研究论文 • Previous Articles     Next Articles

Studies on Dynamics of Calcium and Potassium during Fruit Development ofParthenocarpic and Self-pollinated Citrus Varieties

Xiao Jiaxin; Peng Shupang3;Zhang Hongyan   

  1. ( College of Horticulture and Forestry, Huazhong Agricultural University, Wuhan 430070, China)
  • Received:2003-06-27 Revised:2003-08-22 Online:2004-02-25 Published:2004-02-25

Abstract: Changes of calcium and potassium contents in the ovary or fruitlet and fruit different part (rind andpulp) from ovary development before full bloom to fruit maturation for harvest of citrus i1e. parthenocarpic ‘Guo-qing 1’(Citrus unshiu Marc. ) and self-pollinated ‘Huanong Bendizao’ ( C.reticulata Blanco) were investigated. The results showed as follows : 1) Calcium contents in the ovary (fruitlet) of ‘Guoqing 1’ (GQ1) were at high levels before and at full bloom , and then decreased. But its potassium contents were relatively low before and at full bloom , thereafter increased. 2) Calcium contents in‘Huanong Bendizao’ (HB) were at low levels before full bloom , and presented an increasing trend after full bloom. While its potassium contents were comparatively high before and at full bloom , and then declined. 3) Dynamics of calcium in the pulp of ‘GQ1’and‘HB’were all declining from 65 days after full bloom (DAFB) , while calcium content in rind of ‘GQ1’signifi2
cantly rose at 80 DAFB , that of‘HB’sharply increased at 125 DAFB too , since then kept at high levels until maturation for harvest . 4) Potassium contents in rind and pulp in both of ‘GQ1’and ‘HB’were similarly declining during fruit development .

Key words: Citrus, Ovary, Fruit, Calcium, Potassium

CLC Number: