Performance of Algae Extracts Priming for Enhancing Seed Germination Indices and Salt Tolerance in Calotropis procera (Aiton) W.T

Autor: Babak Pilehvar, Mohammad Bahmani Jafarlou, Mehdi Mohammadi, Mohammad Modarresi
Rok vydání: 2021
Předmět:
Zdroj: Iranian Journal of Science and Technology, Transactions A: Science. 45:493-502
ISSN: 2364-1819
1028-6276
DOI: 10.1007/s40995-021-01071-x
Popis: Salt stress is considered as the most critical environmental factor which negatively affects the germination, growth and establishment of trees and shrubs. Marine algae extract represents an important option of biostimulants which can improve the crop tolerance to abiotic stresses, such as salinity. In the present study, we investigated the potential of seaweed and microalga extracts as biostimulants priming agent to attenuate the effect of salt stress on seed germination and growth indices of milkweed (Calotropis procera Ait), which was grown under different salinity concentrations. Milkweed seeds were primed by the seaweed extract (SWE) of Sargassum angustifolium, and microalga extract (MAE) of Spirulina platensis at various concentrations (0, 5, 10 and 15 ml l−1) and then exposed to salt stress at four levels (0, 7.5, 15 and 30 dS m−1 of diluted seawater) in factorial experiment and completely randomized design. The results indicated that seeds primed by biostimulant germinate and also tolerate salinity up to 15 dS m−1. Although SWEs (10 ml l−1) increased germination percentage by 42% in seeds exposed to 7.5 dS m−1, the parameter was significantly enhanced using MAEs (5 ml l−1) by 60, 65 and 60% at 7.5–30 dS m−1, respectively. Also, SWE (
Databáze: OpenAIRE
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