کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5767107 1413187 2016 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Plant species with extremely small populations (PSESP) in China: A seed and spore biology perspective
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک بوم شناسی، تکامل، رفتار و سامانه شناسی
پیش نمایش صفحه اول مقاله
Plant species with extremely small populations (PSESP) in China: A seed and spore biology perspective
چکیده انگلیسی

Approximately one fifth of the world's plants are at risk of extinction. Of these, a significant number exist as populations of few individuals, with limited distribution ranges and under enormous pressure due to habitat destruction. In China, these most-at-risk species are described as 'plant species with extremely small populations' (PSESP). Implementing conservation action for such listed species is urgent. Storing seeds is one of the main means of ex situ conservation for flowering plants. Spore storage could provide a simple and economical method for fern ex situ conservation. Seed and spore germination in nature is a critical step in species regeneration and thus in situ conservation. But what is known about the seed and spore biology (storage and germination) of at-risk species? We have used China's PSESP (the first group listing) as a case study to understand the gaps in knowledge on propagule biology of threatened plant species. We found that whilst germination information is available for 28 species (23% of PSESP), storage characteristics are only known for 8% of PSESP (10 species). Moreover, we estimate that 60% of the listed species may require cryopreservation for long-term storage. We conclude that comparative biology studies are urgently needed on the world's most threatened taxa so that conservation action can progress beyond species listing.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Plant Diversity - Volume 38, Issue 5, October 2016, Pages 209-220
نویسندگان
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