Effects of Four Kinds of Chemicals on Germination of Mimosa pulchrum Seeds

Effects of four chemical treatments on the germination rate of M. officinalis seeds Yang Youhe 1 He Huiying 2 (1. Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences, Mengla 666303, China; 2. South China Institute of Botany, Chinese Academy of Sciences, Guangzhou 510650, China) Germination; NaOH and gibberellin solution at a lower concentration (0. Bu 0 respectively) appropriate prolonged soaking time can promote germination, a higher concentration of a longer soaking time has no effect on germination or even inhibit the germination of four chemical substances on the seed The effect of germination is related to the concentration of the solution and the soaking time.

Mimosa invisa Mast. var. Iriemis Berith. is a mimosa plant of the mimosa family. Native to tropical America, China's tropical and subtropical regions have cultivated or evolved. For the undercover plant cover, soil conservation and fertilizer, but also an ornamental plant, and has a certain medicinal value and not many research on the wild plant seeds, so the study of its seed germination has a certain practical significance, the results of the study are now collated As follows, for nursery.

1 Materials and methods 1.1 Materials Seeds were collected from Xishuangbanna Tropical Botanical Garden, Chinese Academy of Sciences in September 2000.

Table 1 Germination rate of untreated Mimosa seeds at different temperatures Germination rate at room temperature 30C 20l00t 5. Table 2 Germination rate of Mimosa after different treatments Reagent concentration Soak time Germination rate (6 spit 9.87 efgh Note: Germination rate data in the table = mean + standard deviation, with the same letter indicates no significant difference.

1.2 Removal of germinate after chemical treatment. 1.3 Germination test of germination at 30°C. Room temperature (24~24C during daytime); Fluorescent light source with light intensity of 1500-2000k; 50 seeds per treatment, 3 replicates; germination The matrix is ​​agar. All experiments were performed in seed germination boxes. The radicle extension and seedling height (embryo + radicle) of more than 1 cm is regarded as the germination germination duration is 3 months. 2 Results and analysis 2.1 Effect of temperature on the germination rate of Mimosa seed Seeds without chemical treatment The germination rate at the three temperatures indicated that the average germination rate at 20/30°C and room temperature was slightly higher than 25C, but the difference was not significant (Table 1). The germination rate of the seeds was very low in the untreated condition. The rate is only 2% (%~2 view, most of the seeds are in dormancy state 2.2 The effect of four chemical treatments on the germination of seeds) The germination rate of seeds after treatment with HQKNO3NaOH and gibberellin four substances shows that different chemical treatment differences are (Fn. Kunming: Yunnan Nationalities Publishing House, 1996, 227 2 translated by Zhong Shan, Translated by Ma Yunbin. Germination Physiology. Beijing: Agricultural Press, 1983, 519-3 Institute of Botany, Chinese Academy of Sciences Seed group of the Beijing Botanical Garden. Seed Workbook. Science Press, 1960, 38~4 Xu Benmei, Shi Xiaohua.Study on dormancy and germination of seed of Holly majoria.Journal of Plant Introduction and Domestication (Vol.11) Beijing: Science Press, 1997 150~1 555 Ye Yaomei,Zou Fen,Wang Caiyun.Effects of gibberellin and potassium nitrate on the germination of four species of tall fescue.Seed,1999,(5):28-306 Chen Xuehao,Liu Zhenhua,Chen Yanping.Rapid seed germination test of okra Research, Seed, 1999, (4): 7 International Seed Testing Association (ISTA), Yan Qichuan, Bi Xinhua Trans. International Seed Inspection Regulations, 1986, 146~