Pear, Asian Cultivar Susceptibility

Pear, Asian (Pyrus spp.) — Cultivar Susceptibility

Cultivar

Chojuro

4.0

I

R

S

M

?

Hosui

3.0

S

R

S

M

I

Kikusui

3.5

I

?

?

M

R

Kosui

S

S

R

R

M

I

Niitaka

4.0

I-R

R

R

L

S-I

Nijisseiki
(20th Century)

3.0

I

S

S

M

R

Seigyoku

3.0

R

?

R

E

I

Seuri

6.5

S

R

R

L

?

Shinko

7.5

S

S

R

L

?

Shinseiki

3.5

S-I

S

S

E

I

Shinsui

I

I-R

?

?

E

R

Tsu Li

I

I

?

?

L

S

Ya Li

7.0

I

?

?

L

S

Bartlett

1.0

?

S

?

?

R

1 USDA Fire Blight Rating (Plant Disease Reporter 54:835-839)

10 = no blight, 1 = dead tree. Beyl, C.A. 1988. Fire blight incidence in Asian pears: 1988 season. Proceedings of the 1988 Southeast Professional Fruit Workers Conference, Athens, GA.

2 R = resistant, I = intermediate, S = susceptible.

Based on observations at Joseph Klein Nursery and the National Clonal Germplasm Repository at Corvallis, OR. At this time it is unknown if this is really scab or some other disease.

3 E = early, M = midseason, L = late

4 Field observations, Pscheidt and Postman, 2015.