The Prairie

Weaver, J. E.; Fitzpatrick, Tom

doi:10.2307/1943575

Cited by 89 publications

(50 citation statements)

References 21 publications

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“…-Switchgrass is typically found in habitats that are more moist than those occupied by big bluestem. It is less tolerant of shade than big bluestem, and it does not tiller so readily or so abundantly; but during the first half of the summer it is distinctly taller (14). It occurred in dense, pure, or nearly pure stands mostly on the north side of the road where accumulation of snow and, probably, the amount of run-in water were greatest.…”

Section: [Septe Mbermentioning

confidence: 99%

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Effects of Excessive Natural Mulch on Development, Yield, and Structure of Native Grassland

Weaver¹,

Rowland²

1952

Botanical Gazette

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151

101

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Section: [Septe Mbermentioning

confidence: 99%

“…Experiments over a period of only 3-5 years by WEAVER and FITZPATRICK ( 14) have shown that the accumulation of debris greatly retards growth in spring. The soil warms more slowly since it does not receive the usual insolation.…”

Section: Introductionmentioning

confidence: 99%

Effects of Excessive Natural Mulch on Development, Yield, and Structure of Native Grassland

Weaver¹,

Rowland²

1952

Botanical Gazette

Self Cite

151

101

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“…Andropogon gerardii Vitman, Poaceae, was the dominant plant of the tallgrass prairie region (Weaver and Fitzpatrick, 1934). It has two common cytotypes, hexaploid (2n ¼ 6x ¼ 60 chromosomes) and enneaploid (2n ¼ 9x ¼ 90 chromosomes).…”

Section: Introductionmentioning

confidence: 99%

Impact of Intraspecific Polyploidy in Andropogon gerardii (Poaceae) Populations

Keeler

2004

The American Midland Naturalist

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ABSTRACT.-Andropogon gerardii populations are comprised of two (or more) polyploid forms over much of the range of the species. To understand the impact of intraspecific polyploidy, polyploid cytotypes were compared over 4 y in native grasslands in Boulder, Colorado. Boulder A. gerardii populations averaged 59.6% hexaploids (60 chromosomes), 35.3% enneaploids (90 chromosomes) and 5.1% intermediate (aneuploid) chromosome numbers using flow cytometry to infer chromosome numbers. Neither mean clone area nor mean annual change in clone area differed significantly between ploidy levels. Hexaploid clones produced significantly more viable seeds than enneaploids. Enneaploids are not replacing themselves, whether that is measured absolutely or relative to hexaploids. Enneaploid reproductive effort was greater than hexaploid reproductive effort in some years and they produce substantial numbers of good seeds, but those seeds rarely have enneaploid cytotypes. The populations should eventually become entirely hexaploid. In the current populations, however, enneaploids are big, vigorous and fertile individuals.

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“…Big bluestem, A ndropogon gerardii Vitman, is the dominant grass of the tallgrass prairie (Weaver and Fitzpatrick, 1934). This species contains chromosomal variation: in addition to the commonly reported hexaploids (2n = 6x = 60; Gould, 1967) populations include individuals that are 7x, 8x, and 9x (Kwankin, 1985;Keeler et al, 1987;Keeler, 1990).…”

mentioning

confidence: 99%

Local Polyploid Variation in the Native Prairie Grass Andropogon gerardii

Keeler

1992

American Journal of Botany

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The Prairie

Cited by 89 publications

References 21 publications

Effects of Excessive Natural Mulch on Development, Yield, and Structure of Native Grassland

Effects of Excessive Natural Mulch on Development, Yield, and Structure of Native Grassland

Impact of Intraspecific Polyploidy in Andropogon gerardii (Poaceae) Populations

Local Polyploid Variation in the Native Prairie Grass Andropogon gerardii

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