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学科主题: 植物生理学
题名:
环境因子对新疆砾质荒漠一年生优势盐生植物盐生草种子萌发与幼苗出土的影响
其他题名: Factors influencing seed germination and seedling emergence of Halogeton glomeratus (Bieb.) C.A. Mey. (Chenopodiaceae),a dominant annual halophyte inhabiting the gravel deserts of Xinjiang, China
作者: 鲁艳 ; 雷加强 ; 曾凡江 ; 刘国军 ; 高欢欢 ; 苏延桂
刊名: Seed Science and Technology
发表日期: 2012-09-10
期: 40, 页:283-298
收录类别: SCI收录
部门归属: 新疆策勒荒漠草地生态系统国家野外研究站
摘要: Halogeton glomeratus is a dominant annual inhabiting the saline desert of Xinjiang, China. Experiments were conducted to determine the effects of temperature, light and NaCl on seed germination. The effects of salinity on seed germination recovery, radicle growth and radicle elongation recovery were tested. The interactive effects of irrigation and seed burial depth on seedling emergence were also investigated. Seeds could germinate to high percentage in light and dark at 5-40°C. Germination percentage increased slightly at low salinity (≤ 0.2 mol l-1 NaCl), then decreased with an increase in salinity from 0.4 to 0.8 mol l-1; no seeds germinated at salinities ≥ 1.0 mol l-1. Radicle elongation decreased with an increase in salinity from 0.05 to 0.8 mol l-1, being completely inhibited by ≥ 1.0 mol l-1. Elongation of radicles from NaCl solution ≤ 4 mol l-1 resumed after seedlings were transferred to deionised water. Seeds and young seedlings of H. glomeratus are salt-tolerant. Both the amount and frequency of precipitation are important for H. glomeratus seedling emergence. Seedling emergence was completely inhibited at seed burial depth ≥ 30 mm. Many of the seeds that were deeply buried and irrigated did t germinate, but remained viable.
内容类型: 期刊论文
URI标识: http://ir.xjlas.org/handle/365004/11337
Appears in Collections:监测实验系统(野外台站)_新疆策勒荒漠草地生态系统国家野外研究站_期刊论文

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Recommended Citation:
鲁艳,雷加强,曾凡江,等. 环境因子对新疆砾质荒漠一年生优势盐生植物盐生草种子萌发与幼苗出土的影响[J]. Seed Science and Technology,2012(40):283-298.
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