STUDIES ON THE BIOLOGICAL CHARACTERISTIC OF LEAF GROOTH OF Akebia trifoliata

The growth habit of leaf of Akebia trifoliata was studied.The results showed thatthe growth of individual leaf had eight obvious peaks.The leaf growth of maternalvine was the first peak and its growing period was about 40 d.The second,thirdand fourth peaks are the leaf growth of the first branch period and the growing periodwas about 100 d.The leaf growth of second branch was fifth peak and the growingperiod was about 120d.The third branching had three peaks of leaf growth that theywere the sixth,seventh and eighth,respectively.The growth period of individual leafwas about 240d and can be divided into such threestages as maternal vine,rapid-growthand slow-growth stage. The results of generalized variance analysis showed that this division is both necessary and desirable.