Effects of water supply volume and seed treatments on seedling emergence of Alhagi sparsifolia

Abstract

Abstract: Alhagi sparsifolia is one of the dominant species in the desert-oasis ecotone of the southern marginal zone of the Taklimakan Desert, a plant for wind protection, sand fixation, and a forage grass. The effects of various combinations of water supply volume (4.4, 8.8, 13.2, 17.7, 26.4 and 35.4 mm/d) and seed treatments (control, seed soaking in water for 24 and 48 h and soaking in concentrated sulfuric acid for 20 min) on ripening current year seeds of A. sparsifolia were investigated. Seed coats of A. sparsifolia inhibited seedling emergence. Soaking in water was a better treatment for current year ripening seeds than for last years, while soaking in concentrated sulfuric acid for 20 min was a better treatment for the latter. The optimal water supply volume was greater for seeds in the control than for those in the other treatments and the control seeds germinated after 2 to 6 d in the different water treatments. Soaking in water at 4.4 and 8.8 mm/d and in concentrated sulfuric acid shortened seed germination to 1 to 4 d. Seeds of A. sparsifolia showed a long and continuous germination and emergence pattern, a behavior that beneficially reduced the risk of all progeny of a plant germinating at the same time and dying before reproducing.

CLC Number:

S330.

LIU Zhen, ZENG Fan-jiang, LIU Bo, AN Gui-xiang,
ZHANG Xiao-lei, LI Xiu-dong. Effects of water supply volume and seed treatments on seedling emergence of Alhagi sparsifolia[J]. Acta Prataculturae Sinica, 2010, 19(6): 93-99.

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