| 摘要: |
| 为提高猫尾草（Uraria crinita）种子的利用率和发芽率，分类考查其发芽率，并选用占比含量高的种子，用酸蚀、高温处理、化学方法和播种覆物等方式提高种子萌发率，结果显示：（1）种子分为饱满和干瘪两类。干瘪种子为深褐色，约占种子总数 10%，种胚不发芽；饱满种子可分成黄绿色、橙黄色、褐红色三类，黄绿色种子占总数超过 70%，橙黄色和褐红色的种子均少于 10%，成熟度和吸水性能依次提高，发芽率依次为 14%、22.67%、2.0%。（2）选用黄绿色种子，98% 浓硫酸酸蚀 6 min，80 ℃的水浸泡种子 10 min，发芽率分别提高到 66.67% 和 65.33%；不同浓度赤霉素、硝酸镧溶液处理对发芽没有显著影响；播种时用杂草覆盖比用黄心土覆盖出苗率高。生产上推荐使用 80 ℃水浴 10 min 处理种子，提高种子的发芽率和利用率，播种后覆盖杂草提高出苗率。 |
| 关键词: 猫尾草 萌发 吸水曲线 播种 |
| DOI： |
| 投稿时间：2019-08-21修订日期：2019-11-11 |
| 基金项目:广东省林业科技创新项目（2018KJCX050） |
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| Study on Classification and Germination of Uraria crinita Seed |
| ZENG Shuyan,LI Jiayan,LIU Huina,CHEN Xinqiang,FAN Jianming,ZHU Xijiao,HUANG Jinrong,ZHANG Dongsheng,LUO Wanye |
| (Meizhou Forestry Research Institute,Meizhou;Jiaying University,Meizhou) |
| Abstract: |
| In order to improve the utilization rate and germination rate of Uraria crinita seed, the germination rates of different seeds were examined and the seed with the high proportion were selected to treat by acid etching, high temperature treatment, chemical methods and sowing coverings. The results showed that the seeds are divided into plump seed and dried seed. The dried seeds account for about 10% of the total number of seeds. The dry seeds showed dark brown colour and they do not germinate. Plum seeds can be divided into three types by colour: yellow-green, orange-yellow, and brown-red. The maturity and water absorption performance and the germination rate increase with the seed colour deepening. Yellow-green seeds account for more than 70%
of the total, and orange-yellow and brown-red seeds are less than 10%, with germination rate of 14%, 22.67% and 2.0%, respectively. (2) Yellow-green seeds were selected and treated with 98% concentrated sulfuric acid etched for 6 minutes, and immersed in water at 80 °C for 10 minutes. The germination rates were increased to 66.67% and 65.33%, respectively. Treatment with different concentrations of GA3 and La(NO3)3 solution had no significant effect on germination; the rate of emergence was higher when covered with weeds than with yellow soil. It is recommended to treat the seeds with 80 ℃ water bath for 10 minutes and cover the seed with weeds after sowing in production to improve the germination rate and utilization rate of the seeds. |
| Key words: Uraria crinita germination water absorption curve sowing |
