PHYSIOLOGICAL STUDIES ON SAP FLOW IN THE SUGAR MAPLE, ACER SACCHARUM MARSH.

1945 ◽  
Vol 23c (6) ◽  
pp. 192-197 ◽  
Author(s):  
L. P. V. Johnson
Keyword(s):  
Hydrostatic Pressure ◽  
Beneficial Effect ◽  
Oxygen Concentration ◽  
Sap Flow ◽  
Living Cell ◽  
Acer Saccharum ◽  
Sugar Maple ◽  
Living Cells ◽  
Sugar Maples ◽  
Relative Solubility

Sap flow from the stumps of sugar maples was over five times as great as that from the trunks of the same trees, which were detached in November, January and March. There was no consistent variation in the sugar concentration of sap samples drawn from stumps and trunks, but samples taken from points above girdles were consistently higher in sugar than those taken from below.Sap flow is attributed mainly to the activities of living cells, and it is suggested that the oxygen concentration of the sap and the release of hydrostatic pressure in tapped trees are related to cell activities.The beneficial effect of alternating cold nights and warm days on sap flow is attributed to an increase in availability of oxygen to the living cell through the agency of the relative solubility levels of oxygen in water at low and high temperatures.

Gas Chromatographic Determination of Nonvolatile Organic Acids in Sap of Sugar Maple (Acer saccharum Marsh.)

1984 ◽  
Vol 67 (6) ◽  
pp. 1125-1129
Author(s):  
Joseph N Mollica ◽  
Maria Franca Morselli
Keyword(s):  
Organic Acids ◽  
Sap Flow ◽  
Acer Saccharum ◽  
Sugar Maple ◽  
Internal Standard ◽  
Chromatographic Determination ◽  
Anion Exchange Chromatography ◽  
Exchange Chromatography ◽  
Maple Sap

Abstract Qualitative analysis of organic acids has never been reported for sugar maple sap, but only for its products, "sugar sand" and maple syrup. A gas chromatographic (GC) method is described for the simultaneous determination of up to 13 nonvolatile organic acids in sugar maple sap. Sap is filtered through Celite, and acids are isolated via cation- and anion-exchange chromatography. Reaction of dried acids with BSA [N,O-bis(trimethylsilyl)acetamide] in the presence of pyridine and methoxyamine hydrochloride yields the more volatile TMS (trimethylsilyl) esters. Oxalic, succinic, fumaric, L-malic, tartaric, cis-aconitic, citric, and/or shikimic acids were found in maple sap at concentrations ranging from less than 50 ppb to more than 45 ppm, depending on the particular acid and the date of sap flow. Percent recoveries and coefficients of variation for the acids at the 500 ppm level were 46.0 (3.2), 92.0 (2.9), 73.0 (0.77), 94.0 (2.0), 95.0 (−), 72.0 (−), and 97.0 (0.38), respectively. Various amounts of nonvolatile organic acids are reported in the sap of one sugar maple tree throughout a sap season, and of 3 individual maples during an early sap flow. Quantitation limits were as low as 15 ppb for individual acids in the analysis of a 100 mL sap sample. Esters were separated on a mixed liquid phase column of 4% SE-52/2% SE-30 on Chromosorb W-HP. They were identified by relative retention time, using a dual flame ionization detector. Naphthalene was used as the internal standard. Concurrent identification of pyruvic, malonic, glutaric, α-ketoglutaric, cis-aconitic, and isocitric acids with those previously mentioned is also possible.

scholarly journals Root and Shoot Growth Periodicity of Pot-in-Pot Red and Sugar Maple

1999 ◽  
Vol 17 (2) ◽  
pp. 80-83 ◽  
Author(s):  
J. Roger Harris ◽  
Jody Fanelli
Keyword(s):  
Root Growth ◽  
Acer Saccharum ◽  
Sugar Maple ◽  
Acer Rubrum ◽  
Shoot Elongation ◽  
Red Maple ◽  
Sugar Maples ◽  
Root And Shoot Growth ◽  
Second Year ◽  
Substrate Temperatures

Abstract Red maple (Acer rubrum L. ‘Franksred’) and sugar maple (Acer saccharum Marsh. ‘Green Mountain’) trees were grown in a 56 liter (15 gal) pot-in-pot system for two years. During the second year of production, root growth was observed through observation plates fitted into the container sidewalls, and shoot extension was periodically measured. Root growth began in early March, approximately one month before budbreak for both species. Root growth dramatically slowed down at the onset of budbreak, but quickly resumed and was concurrent with shoot elongation. Root growth slowed dramatically in the fall when substrate temperatures dropped to 5–7C (40–45F). Root growth stopped during the winter for red maple, but some nominal root growth continued throughout the winter for sugar maple. Red maples had over 5 times more total root length against observation plates at the end of the experiment than sugar maples.

Impact of Eutypella Canker on the Maple Resource of the Owen Sound and Wingham Forest Districts

1984 ◽  
Vol 60 (1) ◽  
pp. 18-21 ◽  
Author(s):  
H. L. Gross
Keyword(s):  
Acer Saccharum ◽  
Regression Models ◽  
Sugar Maple ◽  
Positive Function ◽  
Tree Density ◽  
Tree Size ◽  
Percentage Content ◽  
Timber Quality ◽  
Sugar Maples

Sugar maple (Acer saccharum Marsh.) stands of the Owen Sound and Wingham districts in southwestern Ontario were sampled to assess the importance of cankers caused by Eutypella parasitica Davidson and Lorenz. Stands in the Owen Sound District had Eutypella cankers on 7.4% of the sugar maples. Cankered trees had an average cull loss of 12.4% total cubic volume and 49.2% merchantable cubic volume. The incidence of cankering was significantly less for the Wingham District where maple stands have better overall timber quality than do stands in the Owen Sound District. The incidence of Eutypella canker was a positive function of the percentage content of maple in a stand, maple tree density, and maple tree size. Cull loss due to cankers was related to canker size and tree size and to the position of the canker with respect to log production. Regression models illustrating these relationships are presented.

scholarly journals Impact of liming on the abundance and vigor of Armillaria rhizomorphs in Allegheny hardwoods stands

2000 ◽  
Vol 30 (12) ◽  
pp. 1847-1857 ◽  
Author(s):  
B Marçais ◽  
P M Wargo
Keyword(s):  
Acer Saccharum ◽  
Sugar Maple ◽  
Dead Wood ◽  
Basal Area ◽  
Soil Samples ◽  
Potato Tubers ◽  
Somatic Incompatibility ◽  
Sugar Maples ◽  
Major Species ◽  
Root Collar

Abundance of rhizomorphs of Armillaria was characterized in 1995-1996 in 32 plots located in sugar maple (Acer saccharum Marsh.) stands in the Susquehannock State Forest (Pennsylvania, U.S.A.). All of the plots were thinned, and half of the plots were limed in 1985 when the plots were established. Frequency and abundance of Armillaria rhizomorphs in soil samples, on dead wood food bases (stumps, snags, fallen logs), and on the root collar of living sugar maples were determined in each plot. Rhizomorph vigor was evaluated by measuring their ability to colonize fresh striped maple (Acer pennsylvanicum L.) stem sections in the soil, or potato tubers in the laboratory. Isolates of Armillaria were obtained from rhizomorphs in the soil samples and species were determined by somatic incompatibility tests. Armillaria calvescens Bérubé & Dessureault was the major species present, representing about 66% of the isolates. Armillaria gemina Bérubé & Dessureault and Armillaria mellea (Vahl:Fr.) Kummer were also identified in the plots. Frequency of rhizomorphs in the soil, on food bases, abundance of rhizomorphs on root collars, as well as the proportion of rhizomorphs per plot that regenerated and (or) colonized fresh substrates were all correlated. However, abundance of ectotrophic rhizomorphs on the root collar was only weakly correlated with the other components of rhizomorph abundance and vigor. Frequency of the rhizomorphs as well as their ability to colonize fresh substrates were greater in plots either limed or with a high proportion of the basal area in sugar maple prior to thinning. By contrast, abundance of ectotrophic rhizomorphs on root collars was not affected by these factors.

Effects of liming on the nutrition, vigor, and growth of sugar maple at the Lake Clair Watershed, Québec, Canada

2000 ◽  
Vol 30 (5) ◽  
pp. 725-732 ◽  
Author(s):  
Jean-David Moore ◽  
Claude Camiré ◽  
Rock Ouimet
Keyword(s):  
Acer Saccharum ◽  
Sugar Maple ◽  
Negative Impact ◽  
Acid Soil ◽  
Beneficial Effects ◽  
The Third ◽  
Experimental Station ◽  
Sugar Maples ◽  
Foliar Concentrations ◽  
Lime Application

In the 1980s, sugar maple (Acer saccharum Marsh.) dieback was observed across its range in Quebec. In spite of the recovery of the majority of stands during recent years, some have continued to show signs of dieback progression. At the Lake Clair Watershed experimental station, a study was undertaken to evaluate the effect of liming on the nutrition, vigor, and growth of sugar maple in an acid soil, poor in available Ca and Mg. A completely randomized experiment was established and selected sugar maples were treated in 1994 with dolomitic lime in amounts of 0, 0.5, 1, 2, 5, 10, 20, or 50 t·ha-1. Four years after the lime application, improvements in foliar concentrations of N, P, Ca, and Mg were noted. Liming increased the radial growth of sugar maple by 45% for rates from 1 to 10 t·ha-1 and by 90% for rates of 20 t·ha-1, compared with the control trees. The beneficial effects of lime on dieback appeared only very slightly at the third and fourth years after treatment. The negative impact of liming on sugar maple K nutrition could be mitigated by application of potassium sulphate.

Bud break in sugar maple submitted to changing conditions simulating a northward migration

2020 ◽  
Author(s):  
Ping Ren ◽  
Eryuan LEY Liang ◽  
Patrica Raymond ◽  
Sergio Rossi
Keyword(s):  
Acer Saccharum ◽  
Sugar Maple ◽  
Growth Period ◽  
Adaptive Strategy ◽  
Bud Break ◽  
Assisted Migration ◽  
Local Conditions ◽  
Delayed Effects ◽  
Sugar Maples ◽  
Northern Regions

Assisted migration, the human-mediated movement of species and populations, is one adaptive strategy to climate change. Plant phenology affects the survival and distribution of species to local conditions, and its potential modifications need to be explored in the context of assisted migration. We conducted identical experiments in January and April (experiment I and II) and monitored the timing of bud break in sugar maple (<i>Acer saccharum</i> Marshall) under cooling and longer photoperiod to simulate a northward migration. The budbreak in experiment II started 55 days earlier than experiment I. In experiment I, longer photoperiod was more effective than warming in advancing bud break. Compared to experiment II, cooling and long photoperiod had stronger effect in experiment I . Our results demonstrated the significant effect of chilling and confirmed that photoperiod outweighs temperature in initiating bud break when the chilling requirement is unfulfilled. These findings suggest that the future mild winters in the southern range of sugar maple may reduce chilling accumulation and result in the delayed bud break. Sugar maples migrating northward could benefit from longer day lengths, which could partly counteract the delayed effects of colder springs in northern regions, thus ensuring a sufficient growth period.

scholarly journals 571 EVALUATION AND PROPAGATION OF SUPERIOR CADDO MAPLES

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 513e-513 ◽  
Author(s):  
John C. Pair
Keyword(s):  
Drought Stress ◽  
Acer Saccharum ◽  
Sugar Maple ◽  
Green Mountain ◽  
Xylem Water Potential ◽  
Leaf Quality ◽  
Leaf Emergence ◽  
South Central ◽  
Sugar Maples ◽  
Early Fall

In 1983, a trial was initiated to compare numerous selections of sugar maple (Acer saccharum) for adaptability to stressful conditions in south central Kansas (zone 6). Included were seedlings of Caddo maple, a southern ecotype, collected from a population native to central Oklahoma. Selected trees have shown superior resistance to scorch and leaf tatter compared to cultivars in the trade. Pre-dawn measurements indicated higher xylem water potential than `Green Mountain' and `Fairview' under drought stress. Leaf emergence of Caddo maples has been earlier in the spring, and fall color develops later than other sugar maples. Propagation of potential cultivars with early fall color has been principally by T-budding on Caddo understock in July and August, although side-veneer grafting in winter has been successful. In addition to superior summer leaf quality, growth in caliper and total height has been greater than other A. saccharum cultivars.

scholarly journals Effects of Climatic Conditions on Sap Flow in Sugar Maple

1985 ◽  
Vol 61 (4) ◽  
pp. 303-307 ◽  
Author(s):  
Y. T. Kim ◽  
R. H. Leech
Keyword(s):  
Sap Flow ◽  
Acer Saccharum ◽  
Sugar Maple ◽  
Climatic Conditions ◽  
Climatic Factor

Temperature, sunlight and precipitation were studied to examine their influence on sugar maple (Acer saccharum Marsh) sap flow over a five-year period. Temperature was the most important climatic factor influencing the amount of sap flow. Sunlight also increased the sap flow, but rain one day before the sap collection reduced it.

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