Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 333124
Title Rapid change in relative growth rate between the vegetative and reproductive stage of the life cycle in Plantago coronopus
Author(s) Koelewijn, H.P.
Source New Phytologist 163 (2004)1. - ISSN 0028-646X - p. 67 - 76.
Department(s) Centre for Ecosystem Studies
Wageningen Environmental Research
Publication type Refereed Article in a scientific journal
Publication year 2004
Keyword(s) energy allocation patterns - lanceolata - genetics - size - age
Abstract A growth experiment with seedlings from Plantago coronopus, originating from small (0.13 mg) and large (0.20 mg) seeds, was conducted under optimum nutrient conditions to gain insight into the physiological processes associated with the vegetative and generative phase of plant growth. The relative growth rate (RGR) during the vegetative stage was 300 mg g-1 d-1and dropped at the initiation of flowering buds to 60 mg g-1 d-1, a fivefold reduction, while remaining exponential. Investment in reproductive structures had prevalence over vegetative structures during the generative phase of the life cycle. The RGR of reproductive structures was 105 mg g-1 d-1. The initiation of flowering was stage-dependent. After the formation of about 14 leaves, plants started to form flowering buds, independent of weight or leaf size. The shoot : root ratio stayed the same during both the vegetative and generative stages. The change from a two-compartment system (shoot and root) to a three-compartment system (shoot, root and reproductive structures) did not change the balance or functional equilibrium between root and shoot. Seed size effects lasted until the end of the experiment and were reflected in all morphological measurements.
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