Results 151 to 160 of about 2,081 (191)

Hormone levels in the cambial region of intact Picea abies during the onset of cambial activity

Physiologia Plantarum, 1991
Microdialysis probes were used to sample the cambial region of Picea abies stems during the cambial reactivation period. The concentrations of ethylene and zeatinriboside in each sample were measured by gas chromatography and enzyme‐linked immuno‐sorbent assay, respectively.
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Short-term Effects of Some Chemicals on Cambial Activity

Journal of Experimental Botany, 1969
Aqueous solutions of indol-3yl-acetic acid (IAA), I-naphthyl-acetic acid (NAA), 2,4-dichlorophenoxyacetic acid (2,4-D), gibberellic acid (GA), 6-furfuryl aminopurine (FAP), myo-inositol, and sucrose were applied singly and in mixtures to the apical ends of disbudded stem segments of willow.
A. W. ROBARDS, ELAINE DAVIDSON, PARVEEN KIDWAI   +2 more
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Wave nature and a theory of cambial activity

Canadian Journal of Botany, 1985
A Kontron MOP system (electromagnetic electronic image analyser with built-in microprocessor system) was used for the quantitative microscopic analysis of trunks from sycamore maple and elm. It was established that the radial sizes of the derivative cells (mainly wood fibres) from each single cambium mother cell occur in a wave pattern over time which
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Auxin Stimulation of Cambial Activity in Pinus silvestris I. The Differential Cambial Response

Physiologia Plantarum, 1973
AbstractIsolated stem segments of Pinus silvestris L. produce new xylem in sterile culture for 5 weeks if sucrose and IAA are present in the medium. The response of cambium varies in the course of the season and along the tree stem. The cambium is more sensitive in spring and in the stem portion closer to tree apex than later in the season and closer ...
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Periodicity of cambial activity in Abies balsamea. I. Effects of temperature and photoperiod on cambial dormancy and frost hardiness

Physiologia Plantarum, 1992
The relationship between from hardiness and growth potential, and their dependence on temperature and photoperiod, was investigated in the one‐year‐old cambium of balsam fir [Abies balsamea (L.) Mill.]. Six‐year‐old trees were exposed for 9 weeks to either the natural environment or one of 4 controlled environments in the fall (18 September‐18 November)
E. J. Mellerowicz, W. K. Coleman, R. T. Riding, C. H. A. Little   +3 more
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Xylem Structure and Cambial Activity in Prosopis Flexuosa DC.

IAWA Journal, 1985
A description of the wood structure of Prosopis flexuosa DC. (Legum.) is given. It is semiring-porous, shows pores solitary, in multiples and in clusters; small to large-sized vessels with simple perforation plates, and thick vessel walls. Rays multiseriate and homogeneous. Paratracheal axial parenchyma and libriform fibres.
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Correlation of Cambial Activity with Flowering and Regeneration

Botanical Gazette, 1938
1. If certain species of plants are allowed to reach an advanced stage of reproductiveness under favorable environmental conditions, the meristematic tissue of their stems tends to become entirely differentiated into xylem and phloem elements.
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MITOTIC ACTIVITY IN THE CAMBIAL ZONE OF PINUS STROBUS

American Journal of Botany, 1966
Mitotic activity in the cambial zone of 20‐year‐old Pinus strobus L. trees was determined quantitatively, using mitotic counts from serial tangential sections of sample pieces. Counts from nine cores 1.6 mm in diameter from each sample piece were averaged and expressed as the number of mitoses per core with the sampling error.
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Interaction between Indole-acetic Acid and Gibberellic Acid in Cambial Activity

Nature, 1958
IT has been reported that spraying spur-shoots of apricot with gibberellin stimulates cambial activity and leads to increased xylem development1. On the other hand, it is well known that indole-acetic acid stimulates cambial activity2. These observations raise the question as to what are the relative roles of this acid and native gibberellins in normal
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Photoperiodic Control of Leaf Growth and Cambial Activity in Pinus sylvestris

Nature, 1949
IT has long been known1 that geographical races of Pinus sylvestris from northern latitudes show reduced growth of the shoot when planted in more southern localities. Sylven2 and Langlet3 suggested that this is probably a photoperiodic effect, arising from differences in the natural length of day between different localities.
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