Research on Two-rowed Feed Barley
Jerome Franckowiak
NDSU Department of Plant
Sciences
Breeding of two-rowed feed
barley at NDSU has focused on development of high yielding lines that have good
yield stability over environments.
Periodic droughts and heat stress in the western two-thirds of North
Dakota cause large variations in yield.
Preliminary tests indicate that barley cultivars with large kernels can
limit the adverse affects of hot, dry weather.
The breeding line ND19119 was developed in part to test this
hypothesis. Compared to older cultivars,
ND19119 has a 15 percent increase in seed size and a 1 percent increase in malt
extract (percent starch). The grain protein
levels are about 1 percent below those of other barley cultivars (Table
1). ND19119 has good resistance to leaf
spot diseases that are common in North Dakota.
Release of ND19119 is anticipated to occur early in 2005.
If the large kernel trait of
ND19119 is accepted by growers and feeders, its frequency in breeding materials
will need to be increased. A large
number of crosses have been made in anticipation of this possibility. The crosses were made to lines that should
help improve tolerance to heat stress.
Table
1. Malt quality
comparisons for 2ND19119 and check cultivars using data obtained from analyses
of barley samples
grown in
|
Entry* |
Plump kernels (%) |
Kernel weight (mg) |
Barley protein (%) |
Malt extract (%) |
Wort protein (%) |
Wort N/ total N (%) |
Diastatic power (ºL) |
Alpha-amylase (20º DU) |
|
Trials |
7 |
7 |
7 |
7 |
7 |
7 |
7 |
7 |
|
2ND19119 |
93.3 |
46.9 |
12.6 |
81.0 |
6.36 |
50.5 |
87 |
67.1 |
|
Conlon |
89.5 |
40.0 |
13.3 |
79.4 |
5.47 |
41.1 |
120 |
67.2 |
|
Drummond |
77.7 |
32.5 |
14.0 |
78.6 |
5.79 |
41.4 |
190 |
68.3 |
*Data courtesy of the USDA-ARS, Cereal Crops Research
Unit, Madison, WI.