CAJ | 학술논문

'荸荠种'杨梅小年树花芽孕育初期，苯丙氨酸解氨酶（PAL ）活性首先达到高峰；之后多酚氧化酶（PPO）活性出现高峰。花芽孕育盛期过氧化物酶（P OD）活性达到高峰，且与木质素积累到最大值相一致。花芽发端期间，POD活性和木质素水平均降低。GA3处理降低了花芽孕育期间PAL、PPO和POD的活性，导致木质素合成滞缓，抑制花芽发端和降低成花率。
'발제충'양매소년수화아잉육초기，분병안산해안매（PAL ）활성수선체도고봉；지후다분양화매（PPO）활성출현고봉。화아잉육성기과양화물매（P OD）활성체도고봉，차여목질소적루도최대치상일치。화아발단기간，POD활성화목질소수평균강저。GA3처리강저료화아잉육기간PAL、PPO화POD적활성，도치목질소합성체완，억제화아발단화강저성화솔。
Off-year trees of'Biji'bayberry were used to determ ine the effects of GA3 spraying on lignin level and its correlated enzymes'ac tivities in leaves during the period of flower bud physiological differentiation .At the initial stage of flower bud physiological differentiation，the activity of PAL increased to maximum，then followed by the activity of PPO.At the peak of flower bud physiological differentiation，both the activity of POD and the leve l of lignin increased to maximum.During the period of flower initiation，both th e activity of POD and the content of lignin decreased.The treatment with GA3 s praying inhibited the activities of PAL，PPO and POD，slowed down the biosynthes is of lignin，surppressed the differentiation of flower buds and almost complete ly prevented the formation of flower bud.We concluded that GA3 might inhibit t he formation of flower bud by dropping down the accumulation of lignin.