Revision of Sitanion (Triticeae, Gramineae)

Wilson, F. D.

doi:10.2307/2805379

Cited by 30 publications

(25 citation statements)

References 16 publications

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“…Squirreltail's ecotypes encompass a broad ecological amplitude. Five infraspecific taxa (Wilson 1963) vary widely in maturity date, height, and seed shattering characteristics (unpublished data).…”

Section: Resultsmentioning

confidence: 99%

Seedling Growth of Intermountain Perennial and Weedy Annual Grasses

Arredondo¹,

Jones²,

Johnson³

1998

Journal of Range Management

100

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Section: Resultsmentioning

confidence: 99%

Seedling Growth of Intermountain Perennial and Weedy Annual Grasses

Arredondo¹,

Jones²,

Johnson³

1998

Journal of Range Management

100

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“…Sitanion has been acknowledged as a polymorphic genus, and taxonomists disagree over the appropriate taxonomic handling (Wilson 1963, Dewey 1967. According to Wilson ( 1963), Smith recognized 23 species in 1899. Hitchcock grouped these into three species in an early treatment (1920) and maintained this division in his later work ( 1951).…”

Section: Introductionmentioning

confidence: 99%

Ecotypic Adaptation in Sitanion hystrix

Clary

1975

Ecology

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Ecotypic differentiation as a response to climatic conditions was studied in an adaptable grass species Sitanion hystrix (Nutt.) J. G. Smith. Twelve collection were obtained from seven states: Arizona, Colorado, Nebraska, Nevada, New Mexico, South Dakota, and Utah. The collection sites varied in elevation from 1,380 to 2,980 m and in annual precipitation from 310 to 739 mm. Plant materials were grown under uniform conditions in a transplant garden and a growth chamber. The effective growing seasons at the original collection sites were apparently as limited by moisture stress as by cold temperatures. Relative phenological development could be predicted by a climatic scale representing temperature and moisture conditions at the original collection sites. Plant size and dry matter production could not be predicted as reliably, suggesting that the primary factors which influence morphological and production characteristics may be more numerous or complex than those which influence penology. The populations represented in this study have adapted to different climatic conditions primarily through variations in timing of phenological development and in rate of growth. No differences in water use efficiency were found. Under uniform conditions: (1) plants from warm, dry habitats flowered early and had low dry matter production; (2) plants from habitats with moderate temperature and moisture conditions flowered latest and had relatively high dry matter production; and (3) plants from cool, wet habitats flowered early and had relatively high dry matter production. Flowering dates of the different collections varied as much as 2 mo.

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“…For a long time it has been recognized that squirreltail plants are closely related to the genus Pseudoroegneria and Elymus (Cronquist et al 1977). Many natural hybrids have been recognized with squirreltail considered to be one parent (Wilson 1963 zales, pero problemas con la coleccion de semilla (desarticulacion del raquis) han mantenido los precios de la semilla muy altos. Recientemente los genetistas de pastos han iniciado el desarrollo de lineas de "Squirreltail" para liberarlas como germoplasma pre-varietal.…”

Section: Discussionunclassified

Journal of Range Management, Volume 56, Number 3 (May 2003)

2003

REM

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Revision of Sitanion (Triticeae, Gramineae)

Cited by 30 publications

References 16 publications

Seedling Growth of Intermountain Perennial and Weedy Annual Grasses

Seedling Growth of Intermountain Perennial and Weedy Annual Grasses

Ecotypic Adaptation in Sitanion hystrix

Journal of Range Management, Volume 56, Number 3 (May 2003)

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