Table 1 Condensed list of barley traits that have been measured using the Steptoe × Morex DHL population and are available for analysis through GeneNetwork.
DEVELOPMENTAL TRAITS | |||
|---|---|---|---|
Trait ID | Method/equipment | Location | Reference |
Germination | Frequency of the germinating grains | 10 | cp |
Emergence of the second leaf (ESL) | Single-leaf frequency (ESL-f) and length ratio of the second and the first leaf (ESL-r) | 3 | cp |
Heading date | Time interval to heading or anthesis | 1–16, 17–20 | cp, [22] |
Height | Distance from ground to collar at maturity | 1–16, 17–20 | cp, [22] |
Lodging | Stems < 45 degree angle to ground (1–9) | 1–16, 17–20 | cp, [22] |
Maturity | Maturity of the plot (1–9) | 17–20 | cp |
Normalized difference vegetation index (NDVI) | GREENSEEKER http://www.ntechindustries.com | 17–20 | cp |
Head length | Distance from peduncle to the awn tip | 17–20 | cp |
Post harvest sprouting | Frequency of the germinating grains | 10 | cp |
Head loss | Frequency of the tillers with no heads | 3 | cp |
Grain loss | Frequency of the heads with no spikelets. | 3 | cp |
Thousand grain weight (TGW). | TGW = 1000 × weight/seed number. | 17–20, 25 | cp |
Grain morphometrics. | MARVIN and ImageJ | 17–20, 25 | cp |
QUALITY TRAITS | |||
Endosperm cell wall modification. | Calcuflor staining, ImageJ analysis | 20 | cp |
Nitrogen content or grain protein | Micromalting | 1–20 | cp, [22] |
Malt extract | Micromalting | 1–22 | cp,[22] |
Fementability | Micromalting | 1–3 | cp |
Hot water extract | Micromalting | 1–3 | cp |
Milling energy (J) | COMPARAMILL | 1–3 | cp |
Predicted spirit yield | Micromalting | 1–3 | cp |
Grain moisture content | Moisture content of sample % | 1–3 | cp |
Diastatic power | Micromalting | 7–22 | [22] |
Alpha amylase | Micromalting | 7–22 | [22] |
INTERACTION WITH PATHOGENS | |||
Leaf rust (Puccinia hordeii) | Relative Latency Period | 24 | [60] |
Net bloch (Pyrenophora teres) | Frequency of the infection types | 6 | [61] |
Scald (Rhyncosporium secalis) | Disease severity | 25 | cp |
Spot bloch (Cochliobolus sativus) | Frequency of the infection types | 6 | [62] |
Stem rust (Puccinia graminis) | Frequency of the infection types | 6 | [13] |