viabilityconstants: Viability constants

In aravind-j/viabilitymetrics: Seed Viability Calculations and Curve Fitting

Description

A dataset of the known species-specific seed viability constants estimated from the 'improved seed viability equation' of \insertCiteellis_improved_1980;textualviabilitymetrics.

Usage

viabilityconstants

Format

A data frame with 7 columns:

Index

A unique index value, called by the vcindex argument in different functions.

Species

The species for which the constants were estimated.

Ke

The species-specific moisture constant K_E

Cw

The species-specific moisture constant C_W

Ch

The species-specific temperature constant C_H

Cq

The species-specific temperature constant C_Q

Reference

Source of the data.

Details

Various functions such as Sigma, StorageMC use the viability constants from this dataset for computation through the argument vcindex.

Note

Viability constants derived from storage experiment at a single temperature are highlighted by "*" in species column. In such cases, C_H and C_Q are the universal temperature coefficients (0.0329 and 0.000478 respectively).

Source

Primarily from \insertCitehong_seed_1996;textualviabilitymetrics, updated with more species. The source for each record is mentioned in the Reference column. \insertNoCiteali_determination_2014,alivand_germination_2013,baladi_evaluation_2016,balouchi_influence_2017,bam_storage_2008,belletti_influence_1991,bonner_predicting_1994,chaves_controlled_2004,crawford_one-step_2013,daniel_comparative_2011,daniel_controlled_2013,daniel_predicting_2012,daniel_storage_2003,dehghan_viability_2015,demir_derivation_2009,demir_determination_2011,dickie_effects_1991,dickie_estimation_1985,dickie_observations_1995,dickie_prospects_1988,dickie_temperature_1990,ellis_comparison_1989,ellis_influence_1980,ellis_influence_1982,ellis_logarithmic_1986,ellis_low-moisture-content_1988,ellis_low-moisture-content_1992,ellis_low_1990,ellis_quantification_1981,ellis_quantitative_2007,ellis_viability_1988,fantinatti_seed_2007,ghaderi_determination_2010,hay_onestep_2003,hong_seed_1996,ignacio_germinacao_2013,kebreab_effect_1999,kraak_seed_1987,kruse_seed_2005,kundu_prediction_2008,kuo_effects_1990,kuo_prediction_1991,lee_analysis_2017,muthoka_moisture_2009,pozitano_seed_2009,reza_estimation_2014,reza_prediction_2014,simoes_controlled_2008,sinicio_longevity_2009,tabatabaei_determination_2014,tompsett_effect_1984,tompsett_effect_1986,tompsett_review_1992,usberti_performance_2007,usberti_prediction_2006,usberti_seed_1998,wilson_probit_1989,zewdie_response_1991viabilitymetrics

References

\insertAllCited

Examples

# Soybean
viabilityconstants[grepl("glycine", x = viabilityconstants$Species,
                         ignore.case = TRUE),]
# Rice
viabilityconstants[grepl("oryza", x = viabilityconstants$Species,
                         ignore.case = TRUE),]
# Wheat
viabilityconstants[grepl("triticum", x = viabilityconstants$Species,
                         ignore.case = TRUE),]
## Not run: 
# View dataset
View(viabilityconstants)

## End(Not run)

aravind-j/viabilitymetrics documentation built on May 15, 2021, 9:10 a.m.