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Effects of different nickelous compounds on pollen germination and tube growth of fruit trees

MA Jian-jun,ZHU Jing-tao,DU Bin (Hebei Normal University of Science and Technology,Qinhuangdao 066004,China)  
The effects of different nickelous compounds(including nickelous chloride,nickelous nitrate and nickelous sulfate) on pollen germination and tube growth of fruit trees were studied using different cultivars of peach and apricot as materials.The results show that lower concentration of Ni~(2+) promotes pollen germination and tube growth of the fruit trees obviously,while higher concentration of Ni~(2+) inhibits them significantly for the 3 Ni~(2+) sources.The suitable concentration of pollen germination for the peach and apricot cultivars are 4-6μmol/L and 2μmol/L,respectively.The effects are changed with the concentration of Ni,the kinds of Ni~(2+) and the varieties of fruits.In a word,the Ni~(2+) fertilization is useful for fruits growth and development.
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