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Storage period and different abiotic factors regulate seed germination of two apocynum species - cash crops in arid saline regions in the Northwestern China

Citation

Jiang, L and She, C and Tian, C and Tanveer, M and Wang, L, Storage period and different abiotic factors regulate seed germination of two apocynum species - cash crops in arid saline regions in the Northwestern China, Frontiers in Plant Science, 12 Article 671157. ISSN 1664-462X (2021) [Refereed Article]


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Copyright 2021 The Author(s) Licensed under Creative Commons Attribution 4.0 International (CC BY 4.0) https://creativecommons.org/licenses/by/4.0/

DOI: doi:10.3389/fpls.2021.671157

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.

Item Details

Item Type:Refereed Article
Keywords:apocynum, drought, salinity, seed germination, seed storage
Research Division:Agricultural, Veterinary and Food Sciences
Research Group:Crop and pasture production
Research Field:Crop and pasture biochemistry and physiology
Objective Division:Plant Production and Plant Primary Products
Objective Group:Environmentally sustainable plant production
Objective Field:Environmentally sustainable plant production not elsewhere classified
UTAS Author:Tanveer, M (Mr Mohsin Tanveer)
ID Code:151885
Year Published:2021
Deposited By:Agriculture and Food Systems
Deposited On:2022-08-08
Last Modified:2022-09-07
Downloads:0

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