Results 161 to 170 of about 3,147 (201)

Seasonal patterns of abscisic acid in roots of Acer saccharum

Plant Science Letters, 1978
Abstract Levels of abscisic acid (ABA) in the roots of sugar maple ( Acer saccharum Marsh.) were monitored at monthly intervals throughout the year. The highest concentrations were observed during the period of maximum shoot extension in May and June while low levels were associated with the periods of vigorous root growth that occur prior to bud ...
D.B. Cohen, E.B. Dumbroff, D.P. Webb
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Tradeoffs between Growth and Reproduction in Acer rubrum and A. saccharum

2023
Though forests are vital ecosystems to humans many aspects of forest dynamics remain unknown, including how reproduction of tree species may shift under climate change. Most studies have focused on predicting tree growth, i.e., plant productivity, under novel environmental conditions, but understanding how reproduction may also be affected will be ...
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Seasonal changes in the physiology of shade leaves of Acer saccharum

Journal of Plant Physiology, 2000
Summary Changes in the physiology of shade leaves of sugar maple trees (Acer saccharum Marsh.) in eastern Massachusetts were monitored throughout several growing seasons. In the late spring, following leaf expansion, the sugar maple leaves showed high photosynthetic rates and a high carboxylation efficiency which increased only slightly into the ...
Martina Königer, Gary C. Harris, Elise Kibler   +2 more
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The chemical constituents from leaves of Acer saccharum.

Zhong yao cai = Zhongyaocai = Journal of Chinese medicinal materials, 2009
To study the chemical constituents of leaves of Acer saccharum.The leaves of Acer saccharum were extracted by ethanol. The concentrated material was partitioned by petroleum ether, ethyl acetate, and n-butanol. After extracted by ethyl acetate, the extract was isolated and purified by silica gel column chromatography and recrystallization. The compound
Yu, Zhang, Hong, Zhao
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HETEROPHYLLY AND NEOFORMATION OF LEAVES IN SUGAR MAPLE (ACER SACCHARUM)

American Journal of Botany, 1982
Variation in leaf form and timing of leaf initiation were investigated in vigorous leader shoots of open‐grown saplings and larger forest trees of sugar maple (Acer saccharum Marsh.). Winter buds of leader shoots usually contained 6 or 8 leaf primordia and embryonic leaves, whereas 12 to 18 leaves typically expanded along the shoots each year ...
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Suppression and Release during Canopy Recruitment in Acer saccharum

Bulletin of the Torrey Botanical Club, 1985
CANHAM, C.D. (Institute of Ecosystem Studies, Cary Arboretum, Box AB, Millbrook, New York 12545). Suppression and release during canopy recruitment in Acer saccharum. Bull. Torrey Bot. Club. 112: 134-145. 1985.-Patterns of radial growth were used to reconstruct the history of suppression and release during canopy recruitment of Acer saccharum Marsh. in
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THE CONSTITUTION OF A HEMICELLULOSE FROM SUGAR MAPLE (ACER SACCHARUM)

Canadian Journal of Chemistry, 1959
Partial hydrolysis of the main hemicellulose constituent of sugar maple (Acersaccharum) has yielded D-xylose, D-galacturonic acid, 4-O-methyl-D-glucuronic acid, and 2-O-(4-O-methyl-α-D-glucosyluronic acid)-D-xylose. Hydrolysis of the fully methylated polysaccharide gave a mixture of 2-O- and 3-O-methyl-D-xylose, 2,3-di-O-methyl-D-xylose, 2,3,4-tri-O ...
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Acer saccharum (sugar maple)

PlantwisePlus Knowledge Bank, 2022
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Multiple Seedlings in Acer saccharum

Bulletin of the Torrey Botanical Club, 1972
Clayton M. Carl, Harry W. Yawney
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cpDNA of Acer saccharum and Acer nigrum are Very Similar

1997
The number of species and sub-species that comprise North American sugar maples has remained in dispute since their first characterization over 100 years ago. The taxonomic distinctiveness of Acer nigrum (black maples) and A saccharum (sugar maples) has been particularly controversial. An analysis of the nucleotide sequences from a non-coding region of
Skepner, Adam P., Krane, Dan E.
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