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ARS Home » Research » Publications at this Location » Publication #99457
Title: AUTUMNAL GERMINATION PHENOTYPE PREDICTS GIANT FOXTAIL (SETARIA FABERII) SEEDLING EMERGENCE

Author
item DEKKER, JACK - IOWA STATE UNIVERSITY
item LUSCHEI, EDWARD - MONTANA STATE UNIVERSITY
item Buhler, Douglas - Doug

Submitted to: Weed Science Society of America Meeting Abstracts
Publication Type: Abstract Only
Publication Acceptance Date: 2/11/1999
Publication Date: N/A
Citation: N/A

Interpretive Summary:

Technical Abstract: Studies were conducted to evaluate the relationship between the germinability of giant foxtail seed and subsequent emergence from the soil seed bank. Two populations of giant foxtail seed were gathered in the autumn, buried in the soil, and tested for germination. Subsequent emergence that fall and the following year were monitored. A small portion nof giant foxtail from both populations, at both locations, germinated in the autumn. The periodicity of seedling emergence within a population was similar in both locations. The quantity of seedling emergence differed between populations (=/> 50%), and these relative differences between populations were apparent at both locations. A consistent relationship between the germination tests and subsequent emergence was observed: low germination was correlated with low emergence, high germination was correlated with relatively higher seedling emergence. This study indicated dfor the first time that the relative amount of seed emerging from the seed bank may be predicted in the fall, prior to subsequent emergence. This experimental insight may be the basis for a potentially powerful tool for weed seed emergence prediction.