5Martin C , Thimann K V. The role of protein synthesis in the senescence of leaves[J]. Plant Physiol, 1972, 49:64-71.
6Zhu Y-R, Tao H-L, Lv X-Y, et al. High level of endogenous L-serine initiates senescence in Spirodela polyrriza [J].Plant Science, 2004, 166 : 1159 - 1166.
7Ferrante A, Donald A H, Hackett W P , et al. Thidiazuron-a potent inhibitor of leaf senescence in Alstroemeria[J]. Postharvest Biology and Technology, 2002, 25:333-338.
8Mok M C, Kim S G, Armstrong D J, et al. Induction of cytokinin autonomy by N N'-Diphenylurea in tissue cultures of Phaseolus lunatus L [J]. Proc Natl Acad Sci USA, 1979, 76: 3880-3884.
9Burch L R, Horgan R. The purification of cytokinin oxidase from Zea mays kernels[J]. Phytochemistry, 1989, 28:1313-1319.
10Hare P D, Van Staden J . Inhibitory effect of thidiazuron on the activity of cytokinin oxidase isolated from soybean callus[J]. Plant Cell Physiol, 1994, 35 : 1121- 1125.