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Publication Type J
Authors Lu, Y., J. Q. Lei, F. J. Zeng, G. J. Liu, H. H. Gao and Y. G. Su
Title Factors influencing seed germination and seedling emergence of Halogeton glomeratus (Bieb.) CA Mey. (Chenopodiaceae), a dominant annual halophyte inhabiting the gravel deserts of Xinjiang, China
Source Seed Science and Technology
Author Keywords kalidium-caspicum chenopodiaceae radicle growth hyperarid desert sand dunes salinity temperature light responses plants shrub
Abstract 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 degrees 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 not germinate, but remained viable.
Author Address [Lu, Y.; Lei, J. Q.; Zeng, F. J.; Liu, G. J.; Gao, H. H.; Su, Y. G.] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Urumqi 830011, Xinjiang, Peoples R China. [Lu, Y.; Lei, J. Q.; Zeng, F. J.; Liu, G. J.; Gao, H. H.] Cele Natl Stn Observat & Res Desert Grassland Eco, Cele 848300, Peoples R China. Lu, Y (reprint author), Chinese Acad Sci, Xinjiang Inst Ecol & Geog, 818 S Beijing Rd, Urumqi 830011, Xinjiang, Peoples R China. luyanu@126.com
ISSN 0251-0952
ISBN 0251-0952
29-Character Source Abbreviation Seed Sci. Technol.
Year Published 2012
Volume 40
Issue 3
Beginning Page 283-298
Unique Article Identifier WOS:000312609900001
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