两种珍稀沙生植物草麻黄和沙芦草种子催芽技术研究  

Study on artificial breeding techniques of two rare psammophytes Ephedra sinica Stapf and Agropyron mongolicum Keng

作　　者：孙玉洁 张锡唐 哈琦琦 张逸康 张艳 乔一娜 石孟迪 马雅莉 马存平 石长春 Keng SUN Yujie;ZHANG Xitang;HA Qiqi;ZHANG Yikang;ZHANG Yan;QIAO Yina;SHI Mengdi;MA Yali;MA Cunping;SHI Changchun(Yulin University,Yulin Shaanxi 719000,China;Shaanxi Academy of Forestry,Xi an,Shaanxi 710043,China;National Positioning Observation and Research Station of Mu Us Sandy Land Ecosystem in Yulin,Yulin Shaanxi 719053,China)

机构地区：[1]榆林学院,陕西榆林719000 [2]陕西省林业科学院,陕西西安710043 [3]陕西榆林毛乌素沙地生态系统国家定位观测研究站,陕西榆林719053

出　　处：《草学》2024年第2期13-18,共6页Journal of Grassland and Forage Science

基　　金：两种珍稀沙生植物人工繁育技术研究(SXLK2022-06-1);白于山区困难立地生态修复技术研究与示范(SXLK2021-0104)共同资助。

摘　　要：草麻黄和沙芦草是我国重点保护野生植物,然而由于自身发芽率低和生境被破坏等原因,导致种群数量减少,为保护并提高两种珍稀植物的数量,本研究通过室内试验进行了两种珍稀植物的种子繁育技术研究。研究结果表明,不同生长激素对于草麻黄和沙芦草种子发芽影响不同。30mg/L的IAA处理可以明显促进草麻黄种子发芽;10mg/L浓度以上的6-BA和100mg/L的GA3均会明显抑制草麻黄种子发芽及活力。同样GA3浓度高于100mg/L均会抑制沙芦草种子发芽,20mg/L的细胞分裂素可以促进沙芦草种子发芽,40mg/L的IAA可以显著提高沙芦草发芽率。DMSO浸泡10min对种子发芽无影响;浸泡20min时,1%浓度DMSO促进效果最佳;当浸泡30min时,0.5%浓度的效果最佳。因此使用30mg/L和40mg/L的IAA分别有助于草麻黄和沙芦草种子发芽,提高种子活力,同时0.5%的DMSO浸泡30min更适合用于沙芦草种子发芽处理。E.sinica and A.mongolicum are key protected wild plants in our country,However,due to the low germination rate and habitat destruction,the population number decreased.In order to protect and improve the number of the two rare plants,the seed breeding technology of the two rare plants was studied through laboratory experiments.The results showed that different growth hormones had different effects on seed germination of E.sinica and A.mongolicuma.30mg/L IAA treatment could significantly promote seed germination of E.sinica.Both 6-BA and GA3 concentrations above 10mg/L significantly inhibited seed germination and viability of E.sinicaand.Similarly,GA3 concentration higher than 100mg/L could inhibit the germination of A.mongolicum seeds,20mg/L cytokinin could promote the germination of A.mongolicum seeds,40mg/L IAA could significantly improve the germination rate of A.mongolicum seeds.DMSO soaking for 10min had no effect on seed germination.After soaking for 20min,1% DMSO had the best promoting effect.When soaked for 30min,0.5% concentration has the best effect.Therefore,the use of 30mg/L and 40mg/L IAA is conducive to the germination of E.sinica and A.mongolicum,respectively,and improves the seed vitality.Meanwhile,0.5% DMSO soaked for 30min is more suitable for the germination treatment of A.mongolicum.

关 键 词：草麻黄 沙芦草 种子发芽 植物激素 二甲基亚砜 

分 类 号：S54.041[农业科学—作物学]