Latitudinal variation in plant size and relative growth rate in Arabidopsis thaliana

Oecologia ◽  
1998 ◽  
Vol 115 (3) ◽  
pp. 293-301 ◽  
Author(s):  
Bo Li ◽  
Jun-Ichirou Suzuki ◽  
Toshihiko Hara
Keyword(s):  
Growth Rate ◽  
Arabidopsis Thaliana ◽  
Relative Growth Rate ◽  
Plant Size ◽  
Latitudinal Variation ◽  
Relative Growth

scholarly journals Partitioning the Components of Relative Growth Rate: How Important Is Plant Size Variation?

2010 ◽  
Vol 176 (6) ◽  
pp. E152-E161 ◽  
Author(s):  
Mark Rees ◽  
Colin P. Osborne ◽  
F. Ian Woodward ◽  
Stephen P. Hulme ◽  
Lindsay A. Turnbull ◽  
...  
Keyword(s):  
Growth Rate ◽  
Relative Growth Rate ◽  
Size Variation ◽  
Plant Size ◽  
Relative Growth

The relative importance of embryo size and endosperm size in causing the effects associated with seed size in wheat

1963 ◽  
Vol 61 (1) ◽  
pp. 139-145 ◽  
Author(s):  
P. M. Bremner ◽  
R. N. Eckersall ◽  
R. K. Scott
Keyword(s):  
Growth Rate ◽  
Relative Growth Rate ◽  
Seed Size ◽  
Plant Size ◽  
Considerable Effect ◽  
Relative Importance ◽  
Reserve Material ◽  
Relative Growth ◽  
Embryo Size ◽  
The Relationship

1. The growth of wheat plants at two depths of planting, from seed in which embryo size and endosperm size were varied independently was studied.2. Embryo size was shown to have a negligible effect on growth, whilst endosperm size had a considerable effect; the influence of neither embryosize nor endosperm size appeared to be in any way modified by depth of planting. It is suggested that the relationship between seed size and plant size is governed by the amount of reserve material present in the seed.3. During the first 6 days of growth small embryos had a higher relative growth rate than large ones, apparently regardless, within wide limits, of the amount of reserve material in the seed. Thereafter until the exhaustion of reserves growth appeared to be related to the amount of reserve material present.

scholarly journals Image-based methods for phenotyping growth dynamics and fitness components in Arabidopsis thaliana

2017 ◽  
Author(s):  
François Vasseur ◽  
George Wang ◽  
Justine Bresson ◽  
Rebecca Schwab ◽  
Detlef Weigel
Keyword(s):  
Growth Rate ◽  
Arabidopsis Thaliana ◽  
Relative Growth Rate ◽  
Large Scale ◽  
Growth Dynamics ◽  
Dry Mass ◽  
Relative Growth ◽  
Fruit Number ◽  
Wide Range ◽  
Plant Dry Mass

AbstractBackgroundThe model species Arabidopsis thaliana has extensive resources to investigate intraspecific trait variability and the genetic bases of ecologically relevant traits. However, the cost of equipment and software required for high-throughput phenotyping is often a bottleneck for large-scale studies, such as mutant screening or quantitative genetics analyses. Simple tools are needed for the measurement of fitness-related traits, like relative growth rate and fruit production, without investment in expensive infrastructures. Here, we describe methods that enable the estimation of biomass accumulation and fruit number from the analysis of rosette and inflorescence images taken with a regular camera.ResultsWe developed two models to predict plant dry mass and fruit number from the parameters extracted with the analysis of rosette and inflorescence images. Predictive models were trained by sacrificing growing individuals for dry mass estimation, and manually measuring a fraction of individuals for fruit number at maturity. Using a cross-validation approach, we showed that quantitative parameters extracted from image analysis predicts more 90% of both plant dry mass and fruit number. When used on 451 natural accessions, the method allowed modelling growth dynamics, including relative growth rate, throughout the life cycle of various ecotypes. Estimated growth-related traits had high heritability (0.65 < H2 < 0.93), as well as estimated fruit number (H2 = 0.68). In addition, we validated the method for estimating fruit number with rev5, a mutant with increased flower abortion.ConclusionsThe method we propose here is based on the automated computerization of plant images with ImageJ, and subsequent statistical modelling in R. It allows plant biologists to measure growth dynamics and fruit number in hundreds of individuals with simple computing steps that can be repeated and adjusted to a wide range of laboratory conditions. It is thus a flexible toolkit for the measurement of fitness-related traits in large plant populations.

scholarly journals A new method for measuring relative growth rate can uncover the costs of defensive compounds in Arabidopsis thaliana

2010 ◽  
Vol 187 (4) ◽  
pp. 1102-1111 ◽  
Author(s):  
Cloé Paul-Victor ◽  
Tobias Züst ◽  
Mark Rees ◽  
Daniel J. Kliebenstein ◽  
Lindsay A. Turnbull
Keyword(s):  
Growth Rate ◽  
Arabidopsis Thaliana ◽  
Relative Growth Rate ◽  
New Method ◽  
Relative Growth ◽  
Defensive Compounds
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