Disease Resistance of Wheat Varieties: Can Private Varieties Withstand the Pressure?

Table 3

Results from substate disease resistance comparison of group means between public and private wheat varieties in the South East Kansas (2004–2008).

Type of disease	Ownership	Number of varieties	Mean	Statistical significance of difference in group means (at 5%)
BYD	Public	24	6.0
	Private	10	6.8	No
WSM	Public	27	6.1
	Private	13	5.8	No
SBM	Public	26	1.6
	Private	12	1.4	No
Leaf rust	Public	27	7.3
	Private	12	6.0	Yes
Stripe rust	Public	27	4.4
	Private	12	4.3	No
PM	Public	27	5.2	No
	Private	12	6.1

(Source: Kansas Performance Tests with Winter Wheat varieties, 2004–2008. Reports of Progress 930, 947, 967, 982, and 999. Kansas State University, Manhattan). Note that disease resistance rankings range from 1–9, with 9 as the lowest resistance.