Next Article in Journal
Efficacy of Chicken Litter and Wood Biochars and Their Activated Counterparts in Heavy Metal Clean up from Wastewater
Next Article in Special Issue
Carbon Assimilation, Biomass Partitioning and Productivity in Grasses
Previous Article in Journal
The Role iNDF in the Regulation of Feed Intake and the Importance of Its Assessment in Subtropical Ruminant Systems (the Role of iNDF in the Regulation of Forage Intake)
Previous Article in Special Issue
Leaf Length Variation in Perennial Forage Grasses
Article Menu

Export Article

Open AccessArticle
Agriculture 2015, 5(3), 791-805; doi:10.3390/agriculture5030791

Growth Strategy of Rhizomatous and Non-Rhizomatous Tall Fescue Populations in Response to Defoliation

1
Faculty of Agriculture and Life Sciences, Lincoln University, P.O. Box 85084, Lincoln 7647, New Zealand
2
Institute of Agriculture and Environment, Massey University, Private Bag 11-222, Palmerston North 4442, New Zealand
*
Author to whom correspondence should be addressed.
Academic Editor: Les Copeland
Received: 6 July 2015 / Revised: 27 August 2015 / Accepted: 7 September 2015 / Published: 11 September 2015
(This article belongs to the Special Issue Forage Plant Ecophysiology)
View Full-Text   |   Download PDF [256 KB, uploaded 11 September 2015]   |  

Abstract

The aim of this study was to determine the morphology of rhizome production, in two contrasting rhizomatous (R) and non-rhizomatous (NR) tall fescue (Schedonorus arundinaceus (Schreb.) Dumort) populations, and to assess whether rhizome production is associated with changed biomass allocation or plant growth pattern. Growth of R and NR populations was compared, under hard defoliation (H, 50 mm stubble), lax defoliation (L, 100 mm stubble), or without defoliation (U, uncut). Populations were cloned and grown in a glasshouse and defoliated every three weeks, with destructive harvests performed at 6, 12 and 18 weeks. R plants allocated more biomass to root and less to pseudostem than NR plants. Plant tiller numbers were greatly reduced by defoliation, and R and NR populations differed in leaf formation strategy. R plants had narrower leaves than NR, but their leaves were longer, because of greater leaf elongation duration. R plants were more plastic than NR plants in response to defoliation. Ultimately, biomass allocation to rhizomes did not differ between populations but R plants exhibited a subtle shift in distribution of internode length with a few longer internode segments typically located on secondary and tertiary tillers. View Full-Text
Keywords: leaf appearance rate; site filling; plant morphology; Festuca arundinacea; relative tiller appearance leaf appearance rate; site filling; plant morphology; Festuca arundinacea; relative tiller appearance
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Bryant, R.H.; Matthew, C.; Hodgson, J. Growth Strategy of Rhizomatous and Non-Rhizomatous Tall Fescue Populations in Response to Defoliation. Agriculture 2015, 5, 791-805.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Agriculture EISSN 2077-0472 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top