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Seed weight variation of wyoming sagebrush in Northern Nevada Biocell
Busso,Carlos A.; Perryman,Barry L..
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...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Artemisia tridentata ssp. wyomingensis; Climate effects; Rangeland restoration; Seed size.
Ano: 2005 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452005000300005
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Water relations and leaf growth rate of three agropyron genotypes under water stress Biocell
García,María G.; Busso,Carlos A.; Polci,Pablo; García Girou,Norberto L.; Echenique,Vivivan.
The effects of water stress on leaf water relations and growth are reported for three perennial tussock grass genotypes under glasshouse conditions. Studies were performed in genotypes El Palmar INTA and Selección Anguil of Agropyron scabrifolium (Döell) Parodi, and El Vizcachero of A. elongatum (Host) Beauv. Agropyron scabrifolium El Palmar INTA is native to a region with warm-temperate and humid climate without a dry season, and an average annual precipitation of 900 mm. Agropyron scabrifolium Selección Anguil comes from a region with a sub-humid, dry to semiarid climate and a mean annual precipitation of 600 mm. Agropyron elongatum is a widespread forage in semiarid Argentina with well-known water stress resistance. A mild water stress treatment was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Agropyron scabrifolium (Döell) Parodi; Agropyron elongatum (Host) Beauv; Water stress; Water relations; Leaf growth rate.
Ano: 2002 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-95452002000300001
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