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Title of Journal: Ann Bot

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Abbravation: Annals of Botany

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Narnia

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DOI

10.1002/chin.200720065

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0305-7364

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Measuring the RGR of Individual Grass Plants

Authors: GROENEVELD HENRI W
Publish Date: 1998/12/01
Volume: 82, Issue: 6, Pages: 803-808
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Abstract

Vegetative growth of grasses was analysed by dry mass increase of growing leaves Holcus lanatus was grown in a controlled environment and leaf extension rates of leaf numbers 5–10 of the main tiller were monitored daily Leaf appearance and leaf extension rates LER of leaves 5–7 enabled the prediction of the final length and dry mass of leaf 8 during its growth A linear increase of leaf mass per unit leaf length LML of leaf 8 was observed during growth After harvest the daily increase in dry mass of growing leaves was calculated from the LER and corresponding increase in LML The relative growth rate RGR of the main tiller showed daytoday fluctuations and was gradually reduced by 50 over a 16d period The RGR of the shoot was maintained by tillering The RGR of a single grass plant can be calculated from four parameters only LER LML leaf appearance and tillering Variation of RGR over a period can be reconstructed after harvest and the impact of these four parameters on RGR can be established Copyright 1998 Annals of Botany Company

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