BROW
发表于 2025-3-30 10:29:59
Regulation of Cambium Activity,iation of secondary vascular tissues. The cambium produces new cells that build the secondary xylem (the wood) and secondary phloem tissues which increase the thickness of stems and roots. The mechanisms that regulate cambial activity enable perennial trees to become the oldest organisms on earth by
国家明智
发表于 2025-3-30 13:45:57
Regulation of Juvenile-Adult Transition and Rejuvenations,, which occurs gradually during tree development, is regulated by hormonal signals and their gradients along the plant axis, with opposing mechanisms in conifers versus angiosperms. Gibberellin is a key controlling signal in juvenile-adult transition. GA promotes the transition from the juvenile to
Antioxidant
发表于 2025-3-30 18:20:00
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botany
发表于 2025-3-30 21:17:48
Circular Vascular Tissues, Vessel Endings and Tracheids in Organ Junctions, that the induced vessel elements in these rings responded to the circular flux, rather than to a gradient or concentration of the auxin signal. The circular vessels are frequent in branch junctions, and they do not function in water transport and may interrupt water flow. Throughout the plant body,
装入胶囊
发表于 2025-3-31 03:07:37
Ray Differentiation: The Radial Pathways,and the phloem and vice versa. The chapter discusses the mechanism of how rays are induced and their dimensions are regulated. The rays are induced by a radial moving signal, which also induces the development of radial rays inside a vascular ray. The gaseous hormone ethylene, which is naturally syn
ticlopidine
发表于 2025-3-31 07:43:43
Environmental Adaptation of Vascular Tissues,afety mechanisms against drought and freezing. Conversely, forest trees and lianas, which characterize the tropics and rain forests, have low density vessels of very wide diameter at the base of their stems, which afford maximal efficiency of water conduction. To understand the mechanism that contro
mechanical
发表于 2025-3-31 10:12:16
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mechanism
发表于 2025-3-31 15:24:56
Hormonal Control of Reaction Wood Formation,sition. In gymnosperm trees, the reaction wood is called . that develops in the lower side of curved stem. Compression wood is characterized by short, rounded tracheids that have thick walls with increased lignin content and increased microfibril angles that push the stem to upright position. In ang
GIDDY
发表于 2025-3-31 21:28:40
Hormonal Control of Wood Evolution,ulate gene expression by different epigenetic means such as histone modification, DNA methylation, silencing, and anti-silencing molecular mechanisms. Evidence shows that epigenetic modifications can be transmitted across generations. The environment control over gene expression and inheritance indi
故意
发表于 2025-4-1 00:17:32
Textbook 2021the whole plant as an integrated operating organism, and is written in a straightforward manner, making it appealing to anyone interested in plants. Further, it reflects the latest findings for scientists and students in the fields of plant sciences, biology, agriculture, forestry, ecology, vascular