Full TGIF Record # 79522
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Web URL(s):http://www.grassland.org.nz/publications/nzgrassland_publication_282.pdf
    Last checked: 02/03/2017
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Author(s):Fiorelli, C. F.; Woodward, S. J. R.; Wastney, M. E.; Thom, E. R.; Bahmani, I.
Author Affiliation:Fiorelli, Wastney, Thom and Bahmani: Dexcel Limited, Hamilton, New Zealand; Woodward: AgResearch Limited, Hamilton, New Zealand; Fiorelli: Institut National Agronomique Paris-Grignon, France; Bahmani: Institut National Polytechnique de Lorraine, Nancy, France
Title:Modelling factors affecting reproductive development of perennial ryegrass in Waikato dairy pastures
Section:Poster papers
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Source:Proceedings of the New Zealand Grassland Association. Vol. 63, October/November 2001, p. 165-170.
# of Pages:6
Publishing Information:Wellington: New Zealand Grassland Association
Keywords:TIC Keywords: Models; Reproduction; Lolium perenne; Pastures; Flowering; Tillers (vegetative)
Cultivar Names:Ellett; Grasslands Ruanui
Abstract/Contents:"A mechanistic model was developed to identify biological processes responsible for differences in reproductive tillering between 'Ellett' and 'Grasslands Ruanui' perennial ryegrass cultivars. In the model, a field perennial ryegrass tiller population was represented with six compartments: vegetative, emerging reproductive, mature reproductive and dead tillers (three compartments). The biological processes driving the transfer of tillers from one compartment to another were: conversion of vegetative tillers to reproductive tillers, maturation of emerging reproductive tillers, senescence of mature reproductive tillers, and the death of reproductive tillers due to grazing. The model was used to analyze data from Waikato dairy pastures. This enabled some of the effects of irrigation, nitrogen, cultivar and season (weather) on the biological processes to be identified. During spring and early summer, the proportion of reproductive tillers in 'ellett' pastures was always higher than in 'Grasslands Ruanui', regardless of treatment and year. The model explained this difference by a higher conversation rate of 'Ellett' vegitative tillers to reproductive tillers, and suggested that conversation rate is the key to process determining reproductive development in perennial ryegrass. Opportunities to control reproductive tillering are discussed."
Language:English
References:10
Note:Figures
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Fiorelli, C. F., S. J. R. Woodward, M. E. Wastney, E. R. Thom, and I. Bahmani. 2001. Modelling factors affecting reproductive development of perennial ryegrass in Waikato dairy pastures. Proc. N.Z. Grassland Assoc. 63:p. 165-170.
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http://www.grassland.org.nz/publications/nzgrassland_publication_282.pdf
    Last checked: 02/03/2017
    Requires: PDF Reader
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