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Effects of cholesterol and triacontanol on flowering in duckweed

Wang Yong

College of Life Sciences,Nankai University.Tianjin 300071

Abstract

The effects of cholesterol and triacontanol on flowering in duckweed were investigated. Both substances could significantly promote the flowering of the shoft-day plant (SDP), Lemna aequinoctialis 6746, under long-day (LD) conditions, without affecting the vegetative growth. The effective concentration range for cholesterol was from 1.0×10~(-8) to 1.0×10~(-6) mol/L and for triacontanol was from 2.3×10~(-14) to 2.3×10~(-8) mol/L. In contrast, an inhibitory effect on flowering was observed for both substances in the long-day plant (LDP) Lemna gibba G1. The inhibitory effect, however, appeared to be limited to a certain concentration range. These results show that lipochilic substances can modify the process of flowering in duckweed and that their effects on SDP and on LDP are different.

Key words: Cholesterol;Triacontanol;Glowering;Lemna aequinoctialis 6746;Lemna gibba G1

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Citing This Article：

Wang Yong. Effects of cholesterol and triacontanol on flowering in duckweed. Acta Physiol Sin 2000; 52 (1): (in Chinese with English abstract).