Correlation between micronutrients and fruit economic traits in Camellia oleifera forest
[Objective]To provided a reference for accurate nutrition management of C.oleifera.[Method]The contents of trace elements in soil and leaves of C.oleifolia were determined in 4 C.oleifolia cultivation areas in Hunan province,and the relationship between them and fruit economic indexes was analyzed.[Result]The contents of Ca,Mg,Mn,B,Fe in soil and Ca,Mg,Mn,Fe,Zn in leaves,dry kernel ratio of fruit,seed kernel oil content,seed kernel protein,starch content and C.oleifolia oil stearic acid were significantly different between different yield levels(P＜0.05).Regression analysis showed that Ca content in soil and leaves was the main controlling factor of C.oleifolia yield(F=9.210,7.649;P=0.006,0.011);Soil Mg content and leaf Mn content were positively correlated with dry yield(F=6.584,4.566;P=0.018,0.044);The oil content of seed kernel was negatively correlated with soil Fe content,and positively correlated with leaf Mg content(F=9.387,13.613;P=0.006,0.001).Soil Mn content was positively correlated with fruit mass,palmitic acid and arachidonic acid content,and negatively correlated with oleic acid content(F=4.350,11.535,9.160,5.922;P=0.049,0.003,0.006,0.024).The results of correlation analysis showed that B content in soil was positively correlated with Ca content in leaves(r=0.748).There was a significant positive correlation between Zn content in soil and Mn content in leaves(r=0.917).[Conclusion]The content of B and Zn in soil promoted the absorption of Ca and Mn in leaves,and the increase of Ca content in soil and leaves was conducive to the increase of yield.Mg content in leaves is conducive to the increase of oil content in seed kernel,while excessive Fe content in soil may inhibit the accumulation of oil.Mn content in leaves can promote the increase of dry yield,and the composition of fatty acids is mainly affected by Mn content in soil.
Camellia oleiferamedium and trace elementsyieldquality
万方数据
维普
