germplasm collecting
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2002 ◽  
Vol 82 (1) ◽  
pp. 85-88 ◽  
Author(s):  
Maria Matus-Cádiz ◽  
Pierre Hucl

Accessions of annual canarygrass (Phalaris canariensis L.; 2n = 2x = 12) held within germplasm collections generally lack adequate genetic characterization for utilization in crop improvement. The objective of this study was to assess the level of morphological variation of accessions of five annual Phalaris species, including 49 annual canarygrass, 48 P. minor Retz. (2n = 4x = 28), 24 P. brachystachys (2n = 2x = 12), 19 P. paradoxa L. (2n = 2x = 14), and three P. angusta Nees ex Tris. (2n = 2x = 14). In 1993 and 1994, accessions were grown under growth chamber and greenhouse conditions, respectively. Eighteen morphological traits were measured on five plants per accession. Phalaris canariensis had intermediate culm height, wider penultimate leaves, shorter and wider panicles, and larger caryopses relative to the other four species. The six qualitative traits were monomorphic in all five species, except for glume pubescence in P. brachystachysand inflorescence type in P. paradoxa. The limited variation within and among P. canariensis accessions supports the idea that germplasm collecting activities are needed to broaden the genetic diversity held in North American Phalaris collections. Key words: Phalaris, germplasm, morphological traits



2001 ◽  
Vol 78 (4) ◽  
pp. 237-268 ◽  
Author(s):  
David M. Spooner ◽  
Robert J. Hijmans
Keyword(s):  


2000 ◽  
Vol 77 (4) ◽  
pp. 261-270 ◽  
Author(s):  
David M. Spooner ◽  
Antonio Rivera-Peña ◽  
Ronald G. van den Berg ◽  
Konrad Schüler




1997 ◽  
pp. 137-144 ◽  
Author(s):  
M.F. Duval ◽  
G. Coppens d'Eeckenbrugge ◽  
F.R. Ferreira ◽  
L.d.B. Bianchetti ◽  
J.R.S. Cabral


1995 ◽  
Vol 38 (1) ◽  
pp. 47-52 ◽  
Author(s):  
Aaron Rodriguez ◽  
Ofelia Vargas ◽  
Eduardo Villegas ◽  
David M. Spooner


Euphytica ◽  
1995 ◽  
Vol 81 (1) ◽  
pp. 45-56 ◽  
Author(s):  
David M. Spooner ◽  
Ra�l Castillo T. ◽  
Luis L�pez J. ◽  
Ram�n Pineda ◽  
Ra�l Le�n P. ◽  
...  


Euphytica ◽  
1994 ◽  
Vol 79 (1-2) ◽  
pp. 137-148 ◽  
Author(s):  
David M. Spooner ◽  
Ronald G. van den Berg ◽  
Willman García ◽  
María Luisa Ugarte


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