Knowledge Resource Center for Ecological Environment in Arid Area
| DOI | 10.1016/j.flora.2019.151528 |
| Seed germination of Southern Chihuahuan desert cacti: Effect of mucilage, light and phytohormones | |
| Mascot-Gomez, Ernesto1; Flores, Joel1; Lopez-Lozano, Nguyen E.1; Yanez-Espinosa, Laura2 | |
| 通讯作者 | Flores, Joel |
| 来源期刊 | FLORA
 |
| ISSN | 0367-2530 |
| EISSN | 1618-0585 |
| 出版年 | 2020 |
| 卷号 | 263 |
| 英文摘要 | The aim of this study was to evaluate the effect of mucilage and its removal, as well as phytohormones [gibberellic acid (GA(3)) and indole-3-acetic acid (IAA)] in light and in darkness on germination of five cactus species (Coryphanta maiz-tablasensis, Echinocactus platyacanthus, Ferocactus latispinus, Ferocactus pilosus and Stenocereus queretaroensis) from the Chihuahuan Desert. Three of them, C. maiz-tablasensis, E. platyacanthus and F. pilosus, are at risk. The mucilage layer occurred in all species. The sterilization treatment removed the mucilage even from the micropyle. Mucilage resulted in higher germination percentage in E. platyacanthus (88.5 % vs. 21.1 % without mucilage), F. latispinus (88.5 % vs. 48.2 %) and S. queretaroensis (96.0 % vs. 1.0 %), as well as a lower germination time for E. platyacanthus (10.0 days vs. 19.5 days without mucilage), F. pilosus (14.1 days vs. 16.4 days) and F. latispinus (7.8 days vs. 14.0 days). GA(3) did affect germination percentage in E. platyacanthus (higher at 500 and 1000 mg l(-1) than at 50 and 100 mg l(-1)), F. latispinus (higher at 1000 mg l(-1) of GA(3) than at the control and at the other concentrations) and F. pilosus (higher at 1000 mg l(-1) of GA(3) than at control and 50 mg l(-1)). The interaction of mucilage layer and GA(3) was only significant for F. latispinus in that seeds with mucilage had higher germination at 0, 50, 100 and 250 mg l(-1) of GA(3) than seeds without mucilage, but at 500 and 1000 mg l(-1) germination was high with and without mucilage. Most cactus seeds had no germination in darkness and auxins did not promote germination. Mucilage covers the micropyle and seeds without mucilage were internally more colored than seeds with mucilage in most species. We suggest that mucilage layer in the micropyle can function like a barrier regulating the passage of water to the inner seed. |
| 英文关键词 | Auxin Cactaceae Conservation biology Gibberellin Photoblasticism |
| 类型 | Article |
| 语种 | 英语 |
| 国家 | Mexico |
| 收录类别 | SCI-E |
| WOS记录号 | WOS:000514874000005 |
| WOS关键词 | TROPICAL DRY FOREST ; PLANT HORMONES ; DORMANCY ; CACTACEAE ; COMPENSATION ; TEMPERATURE ; POPULATIONS ; ECOLOGY ; FUNGI |
| WOS类目 | Plant Sciences ; Ecology |
| WOS研究方向 | Plant Sciences ; Environmental Sciences & Ecology |
| 资源类型 | 期刊论文 |
| 条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/314512 |
| 作者单位 | 1.IPICYT, Div Ciencias Ambientales, Camino Presa San Jose 2055,Colonia Lomas 4a Secc, San Luis Potosi 78216, San Luis Potosi, Mexico; 2.Univ Autonoma San Luis Potosi, Inst Invest Zonas Desert, Altair 200, San Luis Potosi 78377, San Luis Potosi, Mexico |
| 推荐引用方式 GB/T 7714 | Mascot-Gomez, Ernesto,Flores, Joel,Lopez-Lozano, Nguyen E.,et al. Seed germination of Southern Chihuahuan desert cacti: Effect of mucilage, light and phytohormones[J],2020,263. |
| APA | Mascot-Gomez, Ernesto,Flores, Joel,Lopez-Lozano, Nguyen E.,&Yanez-Espinosa, Laura.(2020).Seed germination of Southern Chihuahuan desert cacti: Effect of mucilage, light and phytohormones.FLORA,263. |
| MLA | Mascot-Gomez, Ernesto,et al."Seed germination of Southern Chihuahuan desert cacti: Effect of mucilage, light and phytohormones".FLORA 263(2020). |
| 条目包含的文件 | 条目无相关文件。 | |||||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
