tomato.dat: Longitudinal data for an experiment to investigate tomato...

In growthPheno: Functional Analysis of Phenotypic Growth Data to Smooth and Extract Traits

Longitudinal data for an experiment to investigate tomato response to mycorrhizal fungi and zinc

Description

The data is from an experiment in a Smarthouse in the Plant Accelerator and is decribed by Watts-Williams et al. (2019). The experiment involves 32 plants, each placed in a pot in a cart, and the carts were assigned 8 treatments using a randomized complete-block design. The main response is Projected Shoot Area (PSA for short), being the sum of the plant pixels from three images. The eight treatments were the combinations of 4 Zinc (Zn) levels by two Arbuscular Mycorrhiza Fungi (AMF) levls. Each plant was imaged on 35 different days after planting (DAPs). It is used to explore the analysis of growth dynamics.

Usage

data(tomato.dat)

Format

A data.frame containing 1120 observations on 16 variables. The names of the columns in the data.frame are:

Column	Name	Class	Description
1	Lane	factor	the Lane in the 2 Lane x 16 Positions grid.
2	Position	factor	the Position in the 2 Lane x 16 Positions grid.
3	DAP	factor	the numbers of days after planting on which the current
			data was observed.
4	Snapshot.ID.Tag	character	a unique identifier for each cart in the experiment.
5	cDAP	numeric	a centered numeric covariate for DAP.
6	DAP.diffs	numeric	the number of days between this and the previous
			observations (all one for this experiment).
7	cPosn	numeric	a centered numeric covaariate for Positions.
8	Block	factor	the block of the randomized complete-block design to
			which the current cart belonged.
9	Cart	factor	the number of the cart within a block.
10	AMF	factor	the AMF treatment (- AMF, +AMF) assigned to the
			cart.
11	Zn	factor	the Zinc level (0, 10, 40, 90) assigned to the cart.
12	Treatments	factor	the combined factor formed from AMF and Zn with
			levels: (-,0; -,10; -,40; -,90; +,0; +,10; +,40; +,90).
12	Weight.After	numeric	the weight of the cart after watering.
13	Water.Amount	numeric	the weight of the water added to the cart.
14	WU	numeric	the weight of the water used since the previous watering.
15	PSA	numeric	the Projected Shoot Area, being the total number of
			plant pixels in three plant images.

References

Watts-Williams SJ, Jewell N, Brien C, Berger B, Garnett T, Cavagnaro TR (2019) Using high-throughput phenotyping to explore growth responses to mycorrhizal fungi and zinc in three plant species. Plant Phenomics, 2019, 12.

growthPheno documentation built on Sept. 11, 2024, 6:42 p.m.