Table 1.

Segregation of the HR and Resistance in a Cross between Di-17 and Col-0 Plants

			Phenotype of Plants
Crossa	Generation	Total No. of Plants	HR+/Sc	HR+/Rd	HR−/S	HR−/R	χ2b	P
Di-17 × Col-0	F1	6	6	0	0	0
	F2	458	280	85	93	0	0.01	>0.8

^aThe pollen-accepting plant is indicated first and the pollen donor second.

^bCalculation based on a 13:3 segregation.

^cSusceptible, disease symptoms include crinkling of leaves and drooping of the bolt.

^dResistant, no disease symptoms.