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Publication Type J
Authors Jiang, L., C. W. She, C. Y. Tian, M. Tanveer and L. Wang
Title Storage Period and Different Abiotic Factors Regulate Seed Germination of Two Apocynum Species - Cash Crops in Arid Saline Regions in the Northwestern China
Source Frontiers in Plant Science
Language English
Author Keywords Apocynum drought salinity seed germination seed storage venetum l. polyethylene-glycol temperature stress light responses tolerance halophyte luobuma fibers Plant Sciences
Abstract On degraded land in arid regions, cultivation of Apocynum species can provide significant environmental benefits by preventing soil erosion and desertification. Furthermore, Apocynum venetum and Apocynum pictum, which are mainly distributed in salt-barren lands in the northwestern region of China, are traditionally used to produce natural fiber and herbal tea. Direct sowing of both species may encounter various abiotic stresses such as drought and salinity. However, these effects on germination remain largely unknown, especially for seeds with different storage periods. The aim of this study was to evaluate the effects of storage period, light condition, temperature regime, drought, and salinity on germination performances of both species. Germination experiment was carried out in November 2017. There were four replicates for each treatment, and each petri dish contained 25 seeds. The results indicated that prolongation of storage period significantly decreased the germination percentage and velocity, especially under abiotic stresses. Light did not affect seed germination of A. venetum and A. pictum under any conditions. Seeds had better germination performance at 10/25 and 15/30 degrees C than those of seeds incubated at any other temperatures. With the increase of polyethylene glycol (PEG) and salinity concentrations, seed germination for both species gradually decreased, especially for seeds stored for 2 years. Low PEG (0-20%) and salinity concentration (0-200 mM) did not significantly affect germination percentage of freshly matured seeds. However, long-time storage significantly decreased drought and salinity tolerance in A. venetum and A. pictum during germination stage. For saline soils in arid and semi-arid regions, freshly matured seeds or 1-year-stored seeds of both Apocynum species are recommended to be sown by using drip-irrigation in spring.
Author Address [Jiang, Li; She, Chaowen] Huaihua Univ, Key Lab Res & Utilizat Ethnomed Plant Resources H, Huaihua, Peoples R China. [Jiang, Li; She, Chaowen] Huaihua Univ, Key Lab Hunan Higher Educ Western Hunan Med Plant, Huaihua, Peoples R China. [Jiang, Li; Tian, Changyan; Wang, Lei] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi, Peoples R China. [Tian, Changyan; Wang, Lei] Univ Chinese Acad Sci, Beijing, Peoples R China. [Tanveer, Mohsin] Univ Tasmania, Tasmanian Inst Agr, Hobart, Tas, Australia. Wang, L (corresponding author), Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi, Peoples R China.; Wang, L (corresponding author), Univ Chinese Acad Sci, Beijing, Peoples R China. egiwang@ms.xjb.ac.cn
ISSN 1664-462X
ISBN 1664-462X
29-Character Source Abbreviation Front. Plant Sci.
Publication Date Jun
Year Published 2021
Volume 12
Beginning Page 12
Digital Object Identifier (DOI) 10.3389/fpls.2021.671157
Unique Article Identifier WOS:000668666700001

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