By F. C. Steward
Plant body structure, quantity VA: research of progress: habit of crops and their Organs describes the most occasions of progress as visible during the habit of crops and their organs at an organismal point. This booklet discusses the quantitative interpretation of development; the results of environmental components; the remedy of tropism; and the consequences of many exogenous growth-regulating compounds.
Organized into 5 chapters, the e-book at the start describes mathematically the plant development mechanisms as they relate to the criteria that ensure morphogenesis. The textual content additionally discusses equipment for assessing the results of exterior stipulations and of age on definite vital physiological features of plant development. the following bankruptcy bargains with phyllotaxis as a specific point of the translation of progress and shape. The 3rd bankruptcy describes numerous phototropically and geotropically delicate platforms impinge upon on plant progress. This bankruptcy additionally covers a few reversible nastic events of organs and the strategy pursuits of unfastened swimming cells. the following bankruptcy bargains with kinfolk among the chemical constitution of artificial compounds and their organic motion. The final bankruptcy specializes in the modulation of progress and improvement via good points of our surroundings and likewise upon experimental manipulation and lower than managed stipulations of progress.
This quantity is a useful source for plant biologists, physiologists, and researchers.
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Extra info for Analysis of Growth: Behavior of Plants and their Organs
It has been stated ( 1 1 5 ) that a discussion of the reasons why a theoretical equation succeeds or fails is of more interest than a dispute as to whether or not it does in fact succeed; while it might seem that no such discussion can profitably be pursued until the disputed point has been decided, un doubtedly the implied attitude to the problem is wholesome. No matter which of the two approaches the investigator adopts, his first requirement is some understanding of the more important func tions available to him and of the methods by which these can be fitted to growth data.
Since the inflection point occurs selection of this particular time to represent at the time (logeb)/k, t = 0 renders b = 1 and eliminates the constant from the growth equa tion. The curve is indeed frequently presented in the form where tx is the time at which half the maximum size is attained. The very early part of the curve closely approximates exponential growth, but toward the other end its form approaches that of the monomolecu lar function. 1. T H E QUANTITATIVE ANALYSIS OF GROWTH 29 The resemblance between the typical S-curve of growth, whether plant or animal, and the progress of an autocatalyzed monomolecular reaction led Loeb, Ostwald, and Robertson to the conclusion that growth is indeed determined by some such chemical means, the view being fully expounded by Robertson ( 8 7 ) .
As re gards either the entire plant or a single organ, the successive growth increments per unit time may at first increase approximately exponen tially, but soon they become progressively smaller than would be ex pected from the law. After reaching some maximum size the increments decline, eventually becoming nil; growth has ceased. This type of growth history was first described clearly by Sachs ( 8 9 ) , who designated the time period over which it occurred the grand period of growth, and a graph of the increments against time the grand curve of growth.