Hostname: page-component-76fb5796d-vfjqv Total loading time: 0 Render date: 2024-04-26T05:12:39.722Z Has data issue: false hasContentIssue false

Afterripening Requirements and Optimal Germination Temperatures for Nuttall's Alkaligrass (Puccinellia nuttalliana) and Weeping Alkaligrass (Puccinellia distans)

Published online by Cambridge University Press:  20 January 2017

Catherine S. Tarasoff*
Affiliation:
Department of Crop and Soil Science, Oregon State University, Corvallis, OR 97331-3002
Daniel A. Ball
Affiliation:
Columbia Basin Agricultural Research Center, Oregon State University, Pendleton, OR 97801
Carol A. Mallory-Smith
Affiliation:
Department of Crop and Soil Science, Oregon State University, Corvallis, OR 97331-3002
*
Corresponding author's E-mail: catherine.tarasoff@oregonstate.edu

Abstract

In the Grande Ronde Valley of eastern Oregon, two perennial grass species in the genus Puccinellia, weeping alkaligrass and Nuttall's alkaligrass, are weeds of Kentucky bluegrass grass-seed production fields. Weeping alkaligrass is introduced from Eurasia, whereas Nuttall's alkaligrass is native to the region. These two species were studied to determine dormancy attributes and optimal temperature conditions for seed germination. Results from the current studies indicate that both species have a high level of embryonic dormancy immediately following seed harvest, which is primarily eliminated through dry storage (afterripening) and an incubation temperature of 20 C. Following adequate afterripening, a prechill treatment of 5 d at 5 C had an inconsistent effect on germination of weeping alkaligrass (P = 0.012 in 2002, 0.156 in 2003) and improved germination of Nuttall's alkaligrass over both years (P < 0.0001). The afterripening requirement for weeping alkaligrass was more than 90 d, whereas Nuttall's alkaligrass required more than 180 d. Following adequate afterripening, both species had rapid and well-synchronized germination at fluctuating day/night temperatures of 30/10 C given unlimited moisture conditions. Given these results, it is unlikely that seeds of either species would germinate in eastern Oregon during the summer months. The data predict a long viability period under dry storage for both species. Weeping alkaligrass and Nuttall's alkaligrass should exhibit a rapid, well-synchronized germination in the spring as observed in the field.

Type
Research Article
Copyright
Copyright © Weed Science Society of America 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Literature Cited

Adkins, S. W. and Adkins, A. L. 1994. Effect of potassium nitrate and ethephon on fate of wild oat (Avena fatua) seed in soil. Weed Sci. 42:353357.CrossRefGoogle Scholar
Ali-Rachedi, S., Bouinot, D., Wagner, M., Bonnet, M., Sotta, B., Grappin, P., and Jullien, M. 2004. Changes in endogenous abscisic acid levels during dormancy release and maintenance of mature seeds: studies with the Cape Verde Islands ecotype, the dormant model of Arabidopsis thaliana. Planta (Berl.) 219:479488.Google Scholar
Ashraf, M., McNeilly, T., and Bradshaw, A. D. 1986. The potential for evolution of salt (NaCl) tolerance in seven grass species. New Phytol. 103:299309.CrossRefGoogle Scholar
Baskin, C. C. and Baskin, J. M. 1998. Seeds: Ecology, Biogeography, and Evolution of Dormancy and Germination. San Diego, CA Academic Press.Google Scholar
Brotherson, J. D. 1987. Plant community zonation in response to soil gradients in a saline meadow near Utah Lake, Utah County, Utah. Great Basin Nat. 47:322333.Google Scholar
Hara, M., Terashima, S., Fukaya, T., and Kuboi, T. 2003. Enhancement of cold tolerance and inhibition of lipid peroxidation by citrus dehydrin in transgenic tobacco. Planta (Berl.) 217:290298.CrossRefGoogle ScholarPubMed
Harivandi, M. A., Butler, J. D., and Soltanpour, P. N. 1983. Effects of soluble salts on ion accumulation in Puccinellia spp. J. Plant Nutr. 6:255266.CrossRefGoogle Scholar
Hitchcock, A. S. 1971. Manual of the grasses of the United States. 1st ed. New York Dover Publications.Google Scholar
Hughes, T. D. 1972. Illinois Turfgrass Conference. Champaign, IL Illinois Cooperative Extension Service.Google Scholar
Larsen, A. L., Montgillion, D. P., and Schroeder, E. M. 1973. Germination of dormant and nondormant Rescuegrass seed on the thermogradient plate. Agron. J. 65:5659.CrossRefGoogle Scholar
Macke, A. J. and Ungar, I. A. 1971. The effects of salinity on germination and early growth of Puccinellia nuttalliana. Can. J. Bot. 49:515520.Google Scholar
Mekki, M. and Leroux, G. D. 1991. False chamomile seed germination requirements and its enhancement by ethephon and nitrate. Weed Sci. 39:385389.CrossRefGoogle Scholar
Meyer, S., Monson, S., and McArthur, E. 1990. Germination response of Artemesia tridentata (Asteraceae) to light and chill: patterns of between-population variation. Bot. Gaz. 151:176183.CrossRefGoogle Scholar
Moravcova, L. and Frantik, T. 2002. Germination ecology of Puccinellia distans and P. limosa . Biologia (Bratisl.) 57:441448.Google Scholar
Morrison, D. and Morris, E. 2000. Pseudoreplication in experimental designs for the manipulation of seed germination treatments. Austral Ecol. 25:292296.CrossRefGoogle Scholar
Salo, L. F., Artiola, J. F., and Goodrich-Mahoney, J. W. 1996. Plant species for revegetation of a saline flue gas desulfurization sludge pone. J. Environ. Qual. 25:802808.CrossRefGoogle Scholar
Silvertown, J. 1980. Leaf-canopy-induced seed dormancy in a grassland flora. New Phytol. 85:109118.CrossRefGoogle Scholar
Tarasoff, C. S., Louhaichi, M., Mallory-Smith, C., and Ball, D. A. 2005. Using geographic information systems to present nongeographical data—an example using a two-way thermogradient plate. Range. Ecol. Manag. 58:315318.CrossRefGoogle Scholar
Yamauchi, Y., Ogawa, M., Kuwahara, A., Hanada, A., Kamiya, Y., and Yamaguchi, S. 2004. Activation of gibberellin biosynthesis and response pathways by low temperature during imbibition of Arabidopsis thaliana seeds. Plant Cell. 16:367378.CrossRefGoogle ScholarPubMed