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| Publication Type:
| Refereed |
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| Author(s): | Conn, Jeffery S.;
Farris, Martha L. |
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| Author Affiliation: | Res. Agron., U.S. Dept. Agriculture, Agric. Res. Service, and Agric. Assst. University of Alaska, Fairbanks, AL. |
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| Title: | Seed Viability and Dormancy of 17 Weed Species after 21 Months in Alaska |
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| Source: | Weed Science. Vol. 35, No. 4, July 1987, p. 524-529. |
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| Publishing Information: | Champaign, IL: Weed Science Society of America |
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| Keywords: | TIC Keywords: Viability; Dormancy; Weed control; Seed germination; Lolium multiflorum; Polygonum; Chenopodium album; Potentilla; Capsella bursa-pastoris
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| Geographic Terms: | Alaska, USA |
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| Abstract/Contents: | "A 50-yr buried-seed study was initiated at Fairbanks, AK, in 1984. Seed of 17 weed species important in Alaskan agriculture were collected and buried 2 and 15 cm deep. Seed viability was determined initially and after recovery from the soil through a combination of germination tests and 2,3,5-triphenyltetrazolium chloride (TTC) treatments. Seed exhumed at 9 and 21 months were tested for viability and dormancy. Burial depth had a significant effect on seed longevity of corn spurry (Spergula arvensis L. #3 SPRAR), wild oats (Avena fatua L. # AVEFA), pineappleweed [Matricaria matricarioides (Less.) C.L. Porter # MATMT], and bluejoint reedgrass [Calamagrostis canadensis (Michx.) Nutt.]. Viability was higher for seed buried at 15 than at 2 cm. Viability of shepherdspurse [Capsella bursapastoris (L.) Medik. #CAPBP] and pineappleweed seed did not decrease significantly over the 21-month burial period. In contrast, seed viability of wild buckwheat (Polygonum convolvulus L. #POLCO), common hempnettle (Galeopsis tetrahit L. # GAETE), wild oats, quackgrass [Agropyron repens (L.) Beauv. # AGRRE], and foxtail barley (Hordeum jubatum L. #HORJU), was less than 11% at the end of 21 months. There was no significant relationship between inital seed dormancy and viability after 21 months of burial." |
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| Language: | English |
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| References: | 23 |
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| Note: | Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Conn, J. S., and M. L. Farris. 1987. Seed Viability and Dormancy of 17 Weed Species after 21 Months in Alaska. Weed Sci. 35(4):p. 524-529. |
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