DOI: 10.5281/zenodo.18485277
title: Data used for 'Inter-population variation of black-grass (Alopecurus myosuroides) in sensitivity to cereal allelochemicals'

description: A set of data files used in testing the inhibitory potential of a number of benzoxazinoid cereal allelochemicals towards the problematic grass weed black-grass (Alopecurus myosuroides), at different concentrations and towards multiple populations collected from English fields. Commercial British wheat (Triticum aestivum) varieties are also examined. 

A more detailed description of all data files provided in the zip file:

allbxs_dr 

Dose-response effects of six benzoxazinoid compounds on the development of a herbicide-susceptible English population of black-grass (Alopecurus myosuroides), following one week of growth after radicle emergence in Petri-dish conditions. ‘doseconc’ indicates concentration of the benzoxazinoid (‘chem’) in µM. ‘shootno’ and ‘rootno’ indicate number of shoots and roots respectively, while ‘rootspshoot’ is short for ‘roots per shoot’, calculated using these values. ‘avgshoot’ and ‘avgroot’ indicate the mean shoot and root length respectively, as a sum of all lengths per replicate, divided by ‘shootno’ and ‘rootno’ respectively.

dbr

Dose-response effects of the benzoxazinoid compound DIBOA on the development of four English black-grass populations. Follows largely the same methodology and structure as ‘allbxs_dr’, but examines four populations rather than one (‘population’), and at a lower dose range.

dbrshmeans

A second file related to ‘dbr’, containing mean values for shoot length (‘avgshoot’).

v3b_pendim

Percentage inhibition of the discriminatory dose (500 µM) of DIMBOA on root length compared to negative controls (‘dimboa_percentagerootreduction’) of 21 English black-grass populations (‘pop’); derived from the dataset ‘v3b_r’, to be described hereafter. Also contains data of percentage shoot reduction upon treatment with 5 ppm of the herbicide pendimethalin compared to negative controls (‘pendimethalin_percentageshootreduction_normal_germination’), from Comont et al., 2024 (https://doi.org/10.1002/ps.8021), and the percentage survivorship upon treatment with approximate field rates of the herbicides ‘Atlantis’ (a mix of mesosulfuron and iodosulfuron; depicted in the column ‘atl_surv_perc’), cycloxydim (‘cyclox_surv_perc’),and fenoxaprop (‘fenox_surv_perc’), from Hicks et al., 2018 (https://doi.org/10.1038/s41559-018-0470-1).

v3b_r

Effect of three chemical treatments (‘treat’), specifically a negative control (‘CTL’), and the discriminatory doses of 500 µM of DIMBOA (‘DIM’), and 100 µM of DIBOA (‘DIB’), on the shoot and root development of 22 English black-grass populations (specified by ‘pop’); data otherwise follow the structure of other data files within this set.

V3W_R

A similarly-structured data file to those described above, especially ‘v3b_r’ above, which follows the same methodology, but including also ‘shootno’, ‘rootno’, and ‘rootpshoot’, as in ‘allbxs_dr’. Instead of black-grass populations, ‘pop’ represents 11 commercial British cultivars, specifically ‘Bassett’ (‘BAS’), ‘Cadenza’ (‘CAD’), ‘Costello’ (‘COS’), ‘KWS Firefly’ (‘FIR’), ‘Graham’ (‘GHM’), ‘Gleam’ (‘GLE’), ‘RGT Gravity’ (‘GRA’), ‘Shabras’ (‘SHA’), ‘KWS Siskin’ (‘SKN’), ‘LG Skyscraper’ (‘SKY’), ‘LG Spotlight’ (‘SPO’), and ‘KWS Zyatt’ (‘ZYA’).