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 North Dakota during 2000 to 2002.

 

 

 

Entry*

Plump kernels (%)

Kernel weight (mg)

Barley protein (%)

Malt extract (%)

Wort protein (%)

Wort N/

total N (%)

Diastatic power (L)

Alpha-amylase

(20 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.