Seasonal Variations of Available Carbohydrates in Bitterbrush

McConnell, Burt R.; Garrison, George A.

doi:10.2307/3797897

Cited by 15 publications

(8 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…By August, fruit is mature but does not ripen and cast until October. Trends in TNC among dates were different than we would have anticipated from the results of McConnell and Garrison (1966) with bitterbrush (Purshiu rridenrara (Pursh) DC). In their study, TNC levels declined through the flowering and seed set periods (spring and early summer) and then began to increase.…”

Section: Resultscontrasting

confidence: 68%

Variations in Physiological Metabolites and Chlorophyll in Sexual Phenotypes of 'Rincon' Fourwing Saltbush

Tiedemann¹,

McArthur²,

Freeman³

1987

Journal of Range Management

View full text Add to dashboard Cite

An experiment WM conducted to determine if concentrations of chlorophyll and basic metabolite~ (total organic nitrogm (TN), total pbospborus (TP), and total nonstructural carbohydratea (TNC)) were an indication of tbe pbysiologkal vigor of tbe 3sexual pbenotypee of fourwing saltbusb (A&&&x canescens (Pursb) NM.). Our basic hypothesis WY that make, fern&s, and plants capable of male and female sex expression (sexually IabUe) were equally vigorous as was manifeshd in chlorophyll and metabolite levels. In June, concentntionr of cbloropbyU a, b, and total cbloropbyll in tbe m8le phenotype were grater than in either tbe female or tbe labile pbenotypeo. There were no different-among phenotypes for tbe other dates. Male plants had tbe bigbest levelr of metabolites (TN, TP, and TNC) when any difference among sexual phenotypes were significant. There were baskally no differencea in metabolite concentration between the female and labile sexual phenotypes. Rewlts indiate thd pmt of the bypotbesir should be rejected-that male, female, and sexually labile plants are equ8lly vigorous based on concentr8tionr of chlorophyll 8nd metabolites. Part of tbe bypotbesis, however, can be accepted-tba1 femaks and kbUe planti are comparable in physiological vigor. Levek of all 3 metabolitea sbowed striking trends among sampk dates, which indiated that fourwing saltbusb has tbe capability of rebuilding its kvek of metabolitea in tbe spring at tbe pbydologically co&y time of flowering. Tbir may be related to the pbotosyntbetic efficiency associated with its C-4 pbotosyntbetic patbW8Y.

show abstract

Section: Resultscontrasting

confidence: 68%

Variations in Physiological Metabolites and Chlorophyll in Sexual Phenotypes of 'Rincon' Fourwing Saltbush

Tiedemann¹,

McArthur²,

Freeman³

1987

Journal of Range Management

View full text Add to dashboard Cite

show abstract

“…Studies have been conducted to determine carbohydrate reserves in root segments of western shrubs (McConnell and Garrison 1966, Coyne and Cook 1970, Donart and Cook 1970. Because excavation of entire root systems is laborious, few researchers have determined total weight or carbohydrate reserves for shrub root systems.…”

Section: Introductionmentioning

confidence: 99%

Root Weights and Carbohydrate Reserves of Big Sagebrush

Sturges¹,

Trlica²

1978

Ecology

View full text Add to dashboard Cite

Mature mountain big sagebrush plants near the bottom and midway up a hillside had maximum rooting depths between 183 and 213 cm, °60 cm deeper than roots of Wyoming big sagebrush plants just below the ridge. Maximum lateral root spread was between 122 and 152 cm. Approximately 60% of total root system weight was located in the surface 30 cm of soil. Total nonstructural carbohydrate concentrations in root decreased from 6.8% in plants at the bottom site to 3.8% in plants at the ridge site. This response could have resulted from an environmental gradient, by a release from competition, or from subspecies differences. Total carbohydrate reserves of individual plant root systems were °7.7 g.

show abstract

“…Other studies indicate that grazing during the spring and early summer is more detrimental to shrub vigor than grazing during late summer and fall; e.g., see McConnell and Garrison ( 1966) and Willard and McKell (1973). Therefore, season of use undoubtedly interacted with intensity of use and accentuated differences in grazing response on the two areas, but this did not interfere with our study objectives.…”

Section: Methodsmentioning

confidence: 85%

Influence of Grazing on Age-Yield Interactions in Bitterbrush

McConnell¹,

Smith²

1977

Journal of Range Management

View full text Add to dashboard Cite

Highlight: Significant relationships were found between yield and age of bitterbrush. Individual plants that were heavily grazed during the spring and early summer produced more forage than plants that were moderately grazed during late summer and fall. Under the heavy grazing treatment, however, plant longevity was sharply reduced and fewer plants survived until the age of maximum production. As a result, only 88 kg/ha of air-dry forage was produced under heavy early-season grazing compared with 172 kg/ha under moderate late-season grazing.

show abstract

Seasonal Variations of Available Carbohydrates in Bitterbrush

Cited by 15 publications

References 5 publications

Variations in Physiological Metabolites and Chlorophyll in Sexual Phenotypes of 'Rincon' Fourwing Saltbush

Variations in Physiological Metabolites and Chlorophyll in Sexual Phenotypes of 'Rincon' Fourwing Saltbush

Root Weights and Carbohydrate Reserves of Big Sagebrush

Influence of Grazing on Age-Yield Interactions in Bitterbrush

Contact Info

Product

Resources

About