Cargando…

THE NATURE OF THE GROWTH RATE

1. The growth rate of organisms may be considered as a chemical reaction which gives the mature organism as its end-product. The organism grows at a definite rate which is, at any moment, proportional to the amount of growth yet to be made. 2. Shoots of young pear trees measured at weekly intervals...

Descripción completa

Detalles Bibliográficos
Autor principal: Reed, H. S.
Formato: Texto
Lenguaje:English
Publicado: The Rockefeller University Press 1920
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2140392/
https://www.ncbi.nlm.nih.gov/pubmed/19871830
_version_ 1782143971595649024
author Reed, H. S.
author_facet Reed, H. S.
author_sort Reed, H. S.
collection PubMed
description 1. The growth rate of organisms may be considered as a chemical reaction which gives the mature organism as its end-product. The organism grows at a definite rate which is, at any moment, proportional to the amount of growth yet to be made. 2. Shoots of young pear trees measured at weekly intervals during the growing season showed a rate similar to that of an autocatalytic reaction. 3. Young walnut trees showed distinct cycles of growth in a single season, but the growth in each cycle proceeded at a rate corresponding to an autocatalytic reaction. 4. The growth rate follows a definite, quantitative course though judged by different criteria. Data are presented for maize in which green weight, dry weight, and height of the plant are used. Data for cattle show that either weight or height of the animal may be used as a criterion.
format Text
id pubmed-2140392
institution National Center for Biotechnology Information
language English
publishDate 1920
publisher The Rockefeller University Press
record_format MEDLINE/PubMed
spelling pubmed-21403922008-04-23 THE NATURE OF THE GROWTH RATE Reed, H. S. J Gen Physiol Article 1. The growth rate of organisms may be considered as a chemical reaction which gives the mature organism as its end-product. The organism grows at a definite rate which is, at any moment, proportional to the amount of growth yet to be made. 2. Shoots of young pear trees measured at weekly intervals during the growing season showed a rate similar to that of an autocatalytic reaction. 3. Young walnut trees showed distinct cycles of growth in a single season, but the growth in each cycle proceeded at a rate corresponding to an autocatalytic reaction. 4. The growth rate follows a definite, quantitative course though judged by different criteria. Data are presented for maize in which green weight, dry weight, and height of the plant are used. Data for cattle show that either weight or height of the animal may be used as a criterion. The Rockefeller University Press 1920-05-20 /pmc/articles/PMC2140392/ /pubmed/19871830 Text en Copyright © Copyright, 1920, by The Rockefeller Institute for Medical Research This article is distributed under the terms of an Attribution–Noncommercial–Share Alike–No Mirror Sites license for the first six months after the publication date (see http://www.rupress.org/terms). After six months it is available under a Creative Commons License (Attribution–Noncommercial–Share Alike 4.0 Unported license, as described at http://creativecommons.org/licenses/by-nc-sa/4.0/).
spellingShingle Article
Reed, H. S.
THE NATURE OF THE GROWTH RATE
title THE NATURE OF THE GROWTH RATE
title_full THE NATURE OF THE GROWTH RATE
title_fullStr THE NATURE OF THE GROWTH RATE
title_full_unstemmed THE NATURE OF THE GROWTH RATE
title_short THE NATURE OF THE GROWTH RATE
title_sort nature of the growth rate
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2140392/
https://www.ncbi.nlm.nih.gov/pubmed/19871830
work_keys_str_mv AT reedhs thenatureofthegrowthrate
AT reedhs natureofthegrowthrate