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 webcite

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]


Detailed descriptions of the traits are here: http://genenetwork.org/dbdoc/SXMPublish.html webcite

Environments/years/source:

1 – SCRI, 2002; 2 – SCRI, 2003; 3 – SCRI, 2004; 4 – SCRI, 2005; 5 – SCRI; 2006; 6 – Minnesota; 7 – Crookston, Minnesota; 8 – Ithaca, New York; 9 – Guelph, Ontario; 10 – Pullman, Washington; 11 – Brandon, Manitoba; 12 – Outlook, Saskatchewan; 13 – Goodale, Saskatchewan; 14 – Saskatoon, Saskatchewan; 15 – Tetonia, Idaho; 16 – Bozeman, Montana (irrigated); 17 – Bozeman, Montana (dryland); 18 – Aberdeen, Idaho; 19 -Klamath Falls, Oregon; 20 – Pullman, Washington; 21 – Bozeman, Montana (irrigated); 22 – Bozeman, Montana (dryland); 23 – Japan (Kazuhiro Sato, seeds for morphometrics); 24 – Wageningen; 25 – Giessen. cp – current paper.

Druka et al. BMC Genetics 2008 9:73   doi:10.1186/1471-2156-9-73

Open Data