Changes of K,Ca,Na,Mg in Coconut Liquid Endosperm During Fruit Development of Three Coconut Cultivars
The variation of K,Ca,Na,Mg content in coconut liquid endosperm during the development of three coconut cultivars was studied. The results showed that,the content of K and Ca reduced gradually,the content of Na rose gradually,and the content of Mg reduced firstly and then rose with fruit development in coconut liquid endosperm. The content of the four elements were in the order KCaMgNa. The content of the four elements in different cultivars were different,The content of K was in the order Local TallXiaohuangWenye No.3; That for Ca was Wenye No.3Xiaohuang Local Tall; That for Na was Xiaohuang Local Tall Wenye No.3; That for Mg was extremely significant only among the 7th fruit with the order Local Tall Xiaohuang Wenye No.3. The correlation analysis indicated that the content of 4 kinds of major elements were significantly positively correlated between K and Ca,K and Mg,Ca and Mg; and there were significantly negatively correlated between K and Na,Ca and Na,Na and Mg. There were the same results between two cultivars,but there were some difference in the comparison of significance.