Baldwin Bruce G, Fawcett Susan, Wolkis Dustin
Jepson Herbarium and Department of Integrative Biology University of California Berkeley 94720-2465 California USA.
University and Jepson Herbaria, University of California Berkeley 94720-2465 California USA.
Appl Plant Sci. 2024 Aug 15;12(5):e11608. doi: 10.1002/aps3.11608. eCollection 2024 Sep-Oct.
Embryo excision is an effective, under-described means of promoting germination in the sunflower family and may help to ensure the survival of endangered taxa or lineages with limited seed availability.
We describe and illustrate a detailed method of embryo excision used successfully to stimulate germination in a diversity of composites and that requires minimal materials and expense, using as an example. We show how this procedure greatly increases germination compared to control treatments in , a close relative of Hawaiian silverswords that exhibits physiological dormancy.
This technique can be learned quickly and is highly effective. Embryo excision can aid conservation efforts dependent on minimal seed resources by enhancing germination and allowing evaluation of seed quality before or after storage, as well as synchronizing seedling development, thereby allowing for refinement of ex situ seed bank conditions and efficient use of horticultural resources.
胚切除是促进菊科植物萌发的一种有效但描述较少的方法，可能有助于确保种子可用性有限的濒危分类群或谱系的存活。
我们描述并举例说明了一种详细的胚切除方法，该方法已成功用于刺激多种菊科植物的萌发，所需材料和费用极少。以夏威夷银剑菊的近缘种 为例，我们展示了与对照处理相比，该程序如何极大地提高了萌发率，该近缘种表现出生理休眠。
该技术易于快速掌握且高效。胚切除可以通过提高萌发率、在储存前后评估种子质量以及同步幼苗发育来帮助依赖极少种子资源的保护工作，从而优化迁地种子库条件并有效利用园艺资源。
