|Table of Contents|

Effects of Temperature and Salt Stress on Seed Germination and Seedling Growth of Peganum harmala

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2023年02
Page:
50-56
Research Field:
Publishing date:

Info

Title:
Effects of Temperature and Salt Stress on Seed Germination and Seedling Growth of Peganum harmala
Author(s):
PENG Muzhi12JI Xiaomin12JIANG Li3
(1.Institute of Afforestation and Sand Control,Xinjiang Academy of Forestry Sciences,Urumqi,Xinjiang 830063;2.Jinghe Desert Ecosystem Research Station,Jinghe,Xinjiang 833300;3.State Key Laboratory of Desert and Oasis Ecology,Xinjiang Institute of Ecology and Geography,Chinese Academy of Sciences,Urumqi,Xinjiang 830011)
Keywords:
Peganum harmalasalt stressseed germinationtemperature
PACS:
-
DOI:
10.11937/bfyy.20222289
Abstract:
Taking desert plant Peganum harmala as test material,under variable temperature and light cultivation,to discuss the effects of different temperature,salt stress and their interactions on seed germination and seedling growth of P.harmala,and explore the optimum temperature for seed germination and tolerance to salt stress.The results showed that temperature and salt stress and their interaction had very significant effects on the germination percent,germination rate,germination potential,lengths of shoot and root of P.harmala young seedling (P<0.001).The germination rate of P.harmala seeds was the highest at 30 ℃/15 ℃ and 35 ℃/20 ℃,which was significantly higher than 20 ℃/5 ℃ or 25 ℃/10 ℃ (P<0.05).At 30 ℃/15 ℃ and 35 ℃/20 ℃,with the increase of salt,the shoot length of P.harmala seedlings increased first and then decreased,indicating that at higher temperature,low concentration of salt (50 mmol?L-1) significantly promoted the growth of P.harmala seedlings.However,at all temperatures,the root length of P.harmala seedlings increased first and then decreased with the increase of salt,indicating that at higher temperatures,low concentration of salt (100 mmol?L-1) significantly promoted the growth of P.harmala seedlings.Therefore,the responses of seedling root length and shoot length to salt and temperature treatments were different.

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Last Update: 2023-02-14