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Single seed Near Infrared Spectroscopy discriminates viable and non-viable seeds of Juniperus polycarpos

Daneshvar, Abolfazl and Tigabu, Mulualem and Karimidoost, Asaddollah and Oden, Per Christer (2015). Single seed Near Infrared Spectroscopy discriminates viable and non-viable seeds of Juniperus polycarpos. Silva Fennica. 49:5, 1-14
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Abstract

A large quantity of non-viable (empty, insect-attacked and shriveled) seeds of Juniperus polycarpos (K. Koch) is often encountered during seed collection, which should be removed from the seed lots to ensure precision sowing in the nursery or out in the field. The aims of this study were to evaluate different modelling approaches and to examine the sensitivity of the change in detection system (Silicon-detector in the shorter vis-a-vis InGsAs-detector in the longer NIR regions) for discriminating non-viable seeds from viable seeds by Near Infrared (NIR) spectroscopy. NIR reflectance spectra were collected from single seeds, and discriminant models were developed by Partial Least Squares - Discriminant Analysis (PLS-DA) and Orthogonal Projection to Latent Structures - Discriminant Analysis (OPLS-DA) using the entire or selected NIR regions. Both modelling approaches resulted in 98% and 100% classification accuracy for viable and non-viable seeds in the test set, respectively. However, OPLS-DA models were superb in terms of model parsimony and information quality. Modelling in the shorter and longer wavelength region also resulted in similar classification accuracy, suggesting that prediction of class membership is insensitive to change in the detection system. The origins of spectral differences between non-viable and viable seeds were attributed to differences in seed coat chemical composition, mainly terpenoids that were dominant in non-viable seeds and storage reserves in viable seeds. In conclusion, the results demonstrate that NIR spectroscopy has great potential as seed sorting technology to upgrade seed lot quality that ensures precision sowing.

Authors/Creators:Daneshvar, Abolfazl and Tigabu, Mulualem and Karimidoost, Asaddollah and Oden, Per Christer
Title:Single seed Near Infrared Spectroscopy discriminates viable and non-viable seeds of Juniperus polycarpos
Series/Journal:Silva Fennica (0037-5330)
Year of publishing :2015
Volume:49
Number:5
Page range:1-14
Number of Pages:14
Publisher:The Finnish Society of Forest Science
ISSN:0037-5330
Language:English
Publication Type:Journal article
Refereed:Yes
Article category:Scientific peer reviewed
Version:Published version
Full Text Status:Public
Agris subject categories.:K Forestry > K01 Forestry - General aspects
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 401 Agricultural, Forestry and Fisheries > Forest Science
Keywords:Iran, juniper, near infrared spectroscopy, NIRS, OPLS, seed sorting
URN:NBN:urn:nbn:se:slu:epsilon-e-3368
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-e-3368
Additional ID:
Type of IDID
Web of Science (WoS)000365778800004
DOI10.14214/sf.1334
ID Code:13201
Faculty:S - Faculty of Forest Sciences
Department:(S) > Southern Swedish Forest Research Centre
Deposited By: SLUpub Connector
Deposited On:07 Apr 2016 09:06
Metadata Last Modified:08 Sep 2017 11:34

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