Changes of endogenous hormones in fruit and their effects on the fruit development of Camellia oleifera

The cultivars ‘Min 43'and ‘Min 60'( Camellia oleifera Abel.) were used to investigate the changes of endogenous hormones and their effects on the fruit growth and development. The results showed as follows. The fruits of ‘Min 43'and ‘Min60'all exhibited S-shape growth curve. The 4 hormones contents in seeds generally decreased with fruit development,but droped firstly and went up then in peel. The overall hormone levels of peel and seeds were showed as follows,the content of abscisic acid( ABA) was the highest,followed by indole-3-acetic acid( IAA),the contents of zeatin riboside( ZR) and gibberellin acid( GA3)were closed at a low level. The correlation between peel's GA3 content and length of‘Min 43'fruit reached a significantly positive correlation,and length of ‘Min 60 'fruit didn' t reach a significant correlation. The correlation between 4 endogenous hormones contents in seeds and fruit diameter,length,single fruit weight and fresh seed weight all reached a significantly negative correlation,but the correlations between 4 endogenous hormones contents in peel and each phenotypic trait presented a remarkable difference.