The Effect of Growth Regulators on Development and Growth of Tea Bud (Part 1)

Abstract

The development and growth of tea plants after applied with some growth regulators (table 1) are reported in detail in this paper.The chemicals were sprayed before and after the flushing time in the first plucking season. The delayed flush and the retarding effect of growth on the tea buds were observed by spraying CMPP and RD 7693, etc. In these treatments, abnormally slender leaves were observed at the lower parts of new shoots, but subsequently growing organs had no effect. These chemicals were more effective sprayed at the beginning of April than at the beginning of March, and when sprayed in January or in last autumn they showed no definite effect.The aqueous solution of 0.02% NAA was sprayed periodically during 20 days in the third plucking season on the axillary buds which were remained after prunning. The spraying at 5 days after pruning was more effective for delay of tea flush than other at days.The effect of CCC (chlorocholine chloride) on the growth of tea buds was tested.The stem elongation of tea young shoots was inhibited and the leaf grew yellow in color by applying 2 % solution of CCC.The development and growth of tea buds were inhibited by spraying MH (maleic hydrazide) solution. The terminal buds were more sensitive than the axillary ones.