NDLI: Non-destructive, stereological estimation of plant root lengths, branching pattern and diameter distribution

Content Provider	Springer Nature Link
Author	Wulfsohn, Dvoralai Nyengaard, Jens R. Gundersen, Hans Jørgen G. Cutler, Adrian J. Squires, Timothy M.
Copyright Year	1999
Abstract	The total length of a linear structure contained in an unbounded, transparent reference space can be estimated from ‘total vertical projections’ obtained by rotating the linear structure about an arbitrary ‘vertical’ axis, and projecting the linear structure onto a plane parallel to the axis of rotation. The total number of intersections between cycloid arcs with their minor axis perpendicular to the axis of rotation and the projected linear structure then provides an unbiased estimator of the total length of the structure. In this study, a stereological procedure based on the method of ‘total vertical projections’ was used to non-destructively estimate total root length, number of branches, diameter distribution and mean root diameter of crested wheatgrass plants (Agropyron cristatum L.) growing in a transparent medium. Root lengths, diameters, and number of branching points of various orders were determined at 3-day intervals over a 4-week growing period. The length estimator was very robust and efficient with sampling coefficients of error usually less than 5% for a total of 50–150 grid intersection counts over two projection directions per plant. Biological coefficients of variance for total length were between 30–70%, and were largely related to variation in the extent of branching.
Starting Page	15
Ending Page	26
Page Count	12
File Format	PDF
ISSN	0032079X
Journal	Plant and Soil
Volume Number	214
Issue Number	1-2
e-ISSN	15735036
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1999-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Ecology Plant Sciences Plant Physiology Soil Science & Conservation
Content Type	Text
Resource Type	Article
Subject	Soil Science Plant Science

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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