首页> 外文期刊>American Journal of Plant Sciences >In Vitro Regeneration of Endangered Medicinal Hypoxis Species
【24h】

In Vitro Regeneration of Endangered Medicinal Hypoxis Species

机译:濒危药用低氧物种的体外再生

获取原文
       

摘要

The genus Hypoxis contains some of southern Africa’s most important wild medicinal species, a situation that has placed most of them amongst endangered species facing extinction. In this study, four Hypoxis species collected from Swaziland: H. argentea, H. filiformis, H. acuminata and H. hemerocallidea, were included to assess their potential for in vitro propagation in order to efficiently conserve these species in the future. Among all types of explants tested only corm explants and seeds gave rise to shoots under the in vitro conditions. For the corm establishment, H. filiformis was the most in vitro responsive species, which had 100% shoot regeneration with high shoot number when cultured on the MS medium supplemented with 3 mg·l-1 kinetin with a piece of shoot attached, while the highest mean shoot number (17) was obtained on the same medium, but with no shoot attachment to the corm explants. H. argentea was the next most responsive species in vitro with up to 70% establishment, while the other two species had only up to 20% of in vitro establishment. For the seed explants, up to 29% seed germination was obtained for H. argentea when the seed coats were crushed before the in vitro culture. The regenerated shoots were rooted in vitro and acclimatized in the greenhouse successfully
机译:Hypoxis属包含一些南部非洲最重要的野生药用物种,这种情况使其中大多数处于濒临灭绝的濒危物种之中。在这项研究中,包括了从斯威士兰收集的四种低氧物种:H。argentea,H。filiformis,H。acuminata和H. hemerocallidea,以评估它们在体外繁殖的潜力,以便将来有效地保护这些物种。在测试的所有类型的外植体中,只有球茎外植体和种子在体外条件下会引起芽。对于球茎的建立,丝状芽孢杆菌是体外反应最强的物种,当在补充有3 mg·l-1激动素的MS培养基上培养并附着有芽时,其芽再生率高达100%,芽数高。在相同的培养基上获得最高的平均芽数(17),但没有茎附着于球茎外植体。在体外,H。argentea是响应性最高的物种,建立率高达70%,而其他两个物种在体外的建立率仅高达20%。对于种子外植体,在体外培养前将种皮粉碎后,可获得高达29%的种子发芽率。再生的芽可在室外生根并成功适应温室

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号