Using a Scanner-based Minirhizotron System to Characterize Sweetpotato Adventitious Root Development During the Initial Storage Root Bulking Stage

Arthur Villordon, Don Labonte, Julio Solis Sarmiento

Research output: Contribution to journalArticlepeer-review

12 Scopus citations

Abstract

A scanner-based minirhizotron (MR) system detected initial adventitious root (AR) development associated with transplant establishment. The system also documented the transition of ARs into pencil roots (PRs) and, in some cases, storage roots (SRs). In general, the MR system underestimated destructive sampling-based (DS) estimates of newly initiated AR (NAR), PR, and SR counts. Angled or vertical single sampling tubes underestimated NAR count by 85% and 79%, respectively. Regardless of installation position, single tube-based measurements underestimated PR and SR count by 83% and 95%, respectively. However, it was found that two vertically installed tubes underestimated NAR count by only 48%. The potential ability of paired sampling tubes to discriminate NAR count differences in response to experimental treatments was confirmed in a simple rain shelter experiment. The paired MR and DS systems detected 83%and 56% reduction in NAR count among plots with rain shelters, respectively. However, it appeared that the presence of tubes interfered with SR formation of monitored AR segments. Despite this limitation, the results show the potential for incorporating MR systems in ongoing and future studies that aim to qualitatively and quantitatively document sweetpotato AR system response to agroclimatic variables and management interventions during the initial SR bulking stage.

Original languageEnglish
Pages (from-to)513-517
Number of pages5
JournalHortscience: A Publication of the American Society for Hortcultural Science
Volume46
Issue number3
DOIs
StatePublished - Mar 2011
Externally publishedYes

Bibliographical note

Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.

Keywords

  • Anomalous cambium
  • Ipomoea batatas
  • Lateral roots
  • Storage root initiation

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