Characteristics and hybridization of important intermountain shrubs. III, Sunflower family

McArthur, E. Durant

doi:10.5962/bhl.title.68887

Cited by 22 publications

(13 citation statements)

References 18 publications

(46 reference statements)

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“…Enough variation seems to exist that a selection program could result in the development of superior forms of rubber rabbitbrush to be used as a winter forage. This report with its documentation of variation in nutritive quality in rubber rabbitbrush augments earlier documentation of variation in browsing animal preference (Hanks et al 1975, McArthur et al 1979, rubber and resin content (Hegerhorst et al 1987), and seed germination (McArthur et al 1987).…”

Section: Resultssupporting

confidence: 62%

Mid-Winter Protein, Phosphorus, and Digestibility of Chrysothamnus nauseosus Subspecies

Bhat¹,

Welch²,

Weber³

et al. 1990

Journal of Range Management

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Little has been done to evaluate the midwinter crude protein, phosphorus, and in vitro digestibility of subspecies and accessions of rubber rabbitbrush (Clirysothumnus nauseosus ssp.) For those few studies that have been conducted, subspecies and accessional variation was not addressed. This study tested the hypothesis that certain subspecies and accessions of rubber rabbitbrush grown in a common garden on homogeneous soil would exceed other subspecies and accessions in crude protein, phosphorus, and in vitro digestibility. Also, the level of these traits for the various subspecies and accessions of rubber rabbitbrush were compared to other species of winter forages. rumens of wintering deer in California study contained rubber rabbitbrush. Significant differences for all 3 traits occurred among subspecies and accessions. Some accessions of rubber rabbitbrush were ranked high in crude protein, phosphorus, and digestibility in comparison to other species of winter forages. Enough variation exists among subspecies and accessions that a selection program could result in the development of superior forms of rubber rabbitbrush to be used as a winter forage. In general, energy, protein, and phosphorus are in short supply in winter forages (Dietz 1965). Therefore, we designed this study to test the hypothesis that certain subspecies and accessions of rubber rabbitbrush, grown in a common garden on homogeneous soil, would exceed other subspecies and accessions in crude protein, phosphorus and in vitro digestibility. We compared in a general way the levels of crude protein, phosphorus, and in vitro digestibility of the various subspecies and &cessions of rubber rabbitbrush to other species of winter forages. Materials and Methods Seeds from 7 subspecies of rubber rabbitbrush were collected from 19 native populations from the western United States. Table 1 lists subspecies, accessions, and locations where seeds were acquired. Seeds were cleaned and transplants produced and placed

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Section: Resultssupporting

confidence: 62%

Mid-Winter Protein, Phosphorus, and Digestibility of Chrysothamnus nauseosus Subspecies

Bhat¹,

Welch²,

Weber³

et al. 1990

Journal of Range Management

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“…Subspecies were identified by morphological criteria (Beetle and Young 1965;Winward and Tisdale 1977;McArthur et al 1979), and chemical criteria (Stevens and McArthur 1974). Within each accession, five plants were selected at random.…”

Section: Methodsmentioning

confidence: 99%

Variation of Monoterpenoid Content among Subspecies and Accessions of Artemisia tridentata Grown in a Uniform Garden

Welch¹,

McArthur²

1981

Journal of Range Management

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We discovered that the midwinter monoterpenoid (volatile or essential oils) content of A. tridentata is under genetic control. We base this conclusion on the results of our study which demonstrated that some accessions of A. tridentata, grown under uniform conditions, contained significantly higher levels of monoterpenoids than others. The relationship between monoterpenoids, digestion, and palatability has not yet been conclusively demonstrated. If monoterpenoids interfere with digestion or have a negative impact on palatability, breeding and selection schemes can be developed to capitalize on the significant variation that exists among accessions of A. tridentata. Superior strains of A. tridentata could then be developed for use on mule deer winter ranges.

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“…consimilis), and green rubber rabbitbrush (C. n. ssp. graveolens) (McArthur et al 1979, Anderson 1986, Hegerltorst et al 1987. The two subspecies referred to as white rubber rabbitbrush, differ in that C. n. ssp.…”

Section: Rubber Rabbitbrushmentioning

confidence: 99%

“…As moisture increases Wyoming big sagebrush gives way to basin big sagebrush and basin big sagebrush subsequently gives way to mountain big sagebrush; as elevation increases basin big sagebrush gives way to Wyoming big sagebrush which in turn gives way to mountain big sagebrush. In some situations, there is introgression and hybridization between the subspecies as well as other sagebrush taxa (McArthur et al 1979, 1988b, McArthur 1994. Since Euro-American settlement, big sagebrush populations have expanded and thickened in some areas within their broad original geographic range in response to some activities, e.g., livestock grazing.…”

Section: Big Sagebrushmentioning

confidence: 99%

“…The changing attitude in respect to the use of these plants based on their competitiveness and widespread adaptation was championed by A. Perry Plummer, among others (Plummer et al 1968, McArthur 1992, Monsen andMcArthur in press). Both species are native and both include a wide array of taxonomic and geoetic variation (McArthur et al .. 1979, Utah State University 1979, Johnson 1983, McArthur 1983, Weber et al 1985, McArthur and Welch 1986, and references cited therein). The ubiquitous presence of sagebrush on western rangelands is illustrated by an observation by Passey et al (1982) who noted in a wide-ranging, comprehensive study, that "sagebrush species or subspecies have been observed and evaluated on ... several hundred tracts .…”

Section: Introductionmentioning

confidence: 99%

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Adaptation and Success of Big Sagebrush and Rubber Rabbitbrush on Disturbed Sites

McArthur¹,

Stevens²,

Monsen³

1995

JASMR

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Restoration or reclamation of many disturbed sites in the western United States requires the use of the widespread native shrubs big sagebrush (Artemisia tridentata) and rubber rabbitbrush (Chrysothamnus nauseosus). Each of these species is taxonomically complex with numerous subspecies and populations that are adapted to specific habitats. Although big sagebrush is a competitive species, it is ordinarily late sera1 in niche, particularly in the secondruy successional processes of disturbed sites. In contrast, the common rubber rabbitbrush subspecies are early seral. The two species often grow together and are compatible in space and time in secondary succession processes. Matching the habitats of seed source and restoration or rehabilitation areas is a wise managemeot practice. Two case studies on successful long term (33 and 16 years) big sagebrush and rubber rabbitbrush disturbed site restoration are reviewed.

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Characteristics and hybridization of important intermountain shrubs. III, Sunflower family

Cited by 22 publications

References 18 publications

Mid-Winter Protein, Phosphorus, and Digestibility of Chrysothamnus nauseosus Subspecies

Mid-Winter Protein, Phosphorus, and Digestibility of Chrysothamnus nauseosus Subspecies

Variation of Monoterpenoid Content among Subspecies and Accessions of Artemisia tridentata Grown in a Uniform Garden

Adaptation and Success of Big Sagebrush and Rubber Rabbitbrush on Disturbed Sites

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