Sr40

(Dyck, 1992) (Plate 3-41)

Synonym

SrA (Dyck, 1992).

Chromosome Location

Probably 2BS (Dyck, 1992). The arm location was based on linkage with other genes in chromosome 2B, that is, 0.01 with Lr13, 0.05 with Lr23, 0.34 with Lr16, 0.22 with Sr36 and 0.28 with Sr9.

 

A. and B. Seedling leaves of (L to R): R.L.6087, C.I.12632 = W1656 (Sr36) and Chinese Spring; infected with A. pt. 1 7-1, 2, 3, 7 [P36P40] and B. pt. 34-1, 2, 3, 4, 5, 6, 7 [p36P40]. Sr40 can be distinguished from Sr36 by low infection type (12-v. 0;) and pathogenicity as shown by comparing A. and B.
C. Seedling leaves of: R.L.6087 and Chinese Spring; infected with pt. 34-2, 4, 5, 7, 11 (L), pt. 34-1, 2, 3, 6, 7, 8, 9 (C) and pt. 126-5, 6, 7, 11 (R).