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dc.contributor.author
Busso, Carlos Alberto
dc.contributor.author
Perryman, Barry L.
dc.date.available
2018-01-23T19:22:54Z
dc.date.issued
2005-12
dc.identifier.citation
Busso, Carlos Alberto; Perryman, Barry L.; Seed weight variation of wyoming sagebrush in Northern Nevada; Instituto de Histología y Embriología; Biocell; 29; 3; 12-2005; 279-285
dc.identifier.issn
0327-9545
dc.identifier.uri
http://hdl.handle.net/11336/34327
dc.description.abstract
Seed size is a crucial plant trait that may potentially affect not only immediate seedling success but also the subsequent generation. We examined variation in seed weight of Wyoming sagebrush (Artemisia tridentata ssp. wyomingensis Beetle and Young), an excellent candidate species for rangeland restoration. The working hypothesis was that a major fraction of spatial and temporal variability in seed size (weight) of Wyoming sagebrush could be explained by variations in mean monthly temperatures and precipitation. Seed collection was conducted at Battle Mountain and Eden Valley sites in northern Nevada, USA, during November of 2002 and 2003. Frequency distributions of seed weight varied from leptokurtic to platykurtic, and from symmetry to skewness to the right for both sites and years. Mean seed weight varied by a factor of 1.4 between locations and years. Mean seed weight was greater (P<0.05) in 2003 than in 2002 at both sites. This can partially be attributed to 55% greater precipitation in 2003 than 2002, since mean monthly temperatures were similar (P>0.05) in all study situations. Simple linear regression showed that monthly precipitation (March to November) explained 85% of the total variation in mean seed weight ( P=0.079). Since the relationship between mean monthly temperature (June-November) and mean seed weight was not significant (r2=0.00, P=0.431), this emphasizes the importance of precipitation as an important determinant of mean seed weight. Our results suggest that the precipitation regime to which the mother plant is exposed can have a significant effect on sizes of seeds produced. Hence, seasonal changes in water availability would tend to alter size distributions of produced offspring.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Instituto de Histología y Embriología
dc.rights
info:eu-repo/semantics/openAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
Artemisia Tridentata Ssp. Wyomingensis
dc.subject
Climate Effects
dc.subject
Rangeland Restoration
dc.subject
Seed Size
dc.subject.classification
Agricultura
dc.subject.classification
Agricultura, Silvicultura y Pesca
dc.subject.classification
CIENCIAS AGRÍCOLAS
dc.title
Seed weight variation of wyoming sagebrush in Northern Nevada
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2017-11-03T19:54:52Z
dc.journal.volume
29
dc.journal.number
3
dc.journal.pagination
279-285
dc.journal.pais
Argentina
dc.journal.ciudad
Mendoza
dc.description.fil
Fil: Busso, Carlos Alberto. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
dc.description.fil
Fil: Perryman, Barry L.. University of Nevada; Estados Unidos
dc.journal.title
Biocell
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452005000300005
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