LIST OF GENES IN PISUM SATIVUM FOR RESISTANCE TO VIRUSES

48 PNL Volume 19 1987 RESEARCH REPORTS

Provvidenti, R. Department of Plant Pathology

New York State Agricultural Experiment Station
Cornell University, Geneva, NY 14456

In 1934, W. H. Pierce (7) reported resistance in the cultivar Wisconsin Perfection to a newly
characterized viral disease caused by bean yellow mosaic virus. However, it was not until
1956 that Yen & Fry in Australia (15) elucidated the inheritance of this resistance. Since then,
a number of other genetic studies have been conducted in the USA and elsewhere, and presently
we recognize 10 genes which are able to confer resistance to the most common viruses
affecting Pisum sativum L. All these genes are monogenically inherited and 8 out of 10 are
recessive, conferring a high level of resistance to the pertinent viruses. Some of these genes
are strain- or pathotype-specific, whereas a few appear to be repetitive entities.

Gene symbol Character, virus, and reference

cyv Single recessive, temperature insensitive for resistance to clover vellow

vein virus (formerly the severe strain of bean yellow mosaic virus); on
chromosome 2, tightly linked to mo (9).

cyv-2 Single recessive, temperature insensitive for resistance to clover vellow
vein virus, having the same function as cyv, but independently inherited;
possibly a duplicate gene (9).

En Single dominant for a high level of tolerance to pea enation mosaic virus

(12); on chromosome 3 (3,6).

Ir Single recessive for resistance to bean (pea) leafroll virus (1).

mo Single recessive for resistance to bean yellow mosaic virus (15), temper-

ature sensitive, behaves as a single dominant at 18 C (14); confers
resistance also to watermelon mosaic virus 2 (13); on chromosome 2 (5);
tightly linked to cyv and sbm-2 (9,10).

Pmv Single dominant for a high level of resistance to plantago mottle virus (8).

PNL Volume 19 1987 RESEARCH REPORTS 49

Gene symbol Character, virus, and reference

sbm Single recessive, specific for resistance to the standard strain of pea

seedborne mosaic virus (4); on chromosome 6 (2).

sbm-2 Single recessive, specific for resistance to a lentil strain of pea seedborne
mosaic virus: temperature insensitive; on chromosome 2 and tightly linked
to mo (10).

sbm-3 Single recessive, specific for resistance to a lentil strain of pea seedborne
mosaic virus, having the same function as sbm-2. but independently
inherited; possibly a duplicate gene (10).

sbm-4 Single recessive, specific for resistance to the P4 strain of pea seedborne
mosaic virus, temperature insensitive (11).

1. Drijfhout, E. 1968. Euphytica 17:224-235

2. Gritton, E. T., & D. J. Hagedorn. 1975. Crop Sci. 15:447-448.

3. Gritton, E. T., & D. J. Hagedorn. 1980. PNL 12:26-27.

4. Hagedorn, D.J. & E. T. Gritton. 1973. Phytopathology 63:1130-1133.

5. Marx, G. A., & R. Prowidenti. 1979. PNL 11:28-29.

6. Marx, G. A., N. F. Weeden, & R. Prowidenti. 1985. PNL 17:57-60.
7 Pierce, W. H. 1934. Phytopathology 24:87-115.

8. Prowidenti, R. 1979. J. Heredity 70:350-351.

9. Prowidenti, R. 1987. J. Heredity 78: (Jan.-Feb. Issue)

10. Prowidenti, R., & R. Alconero. 1987. J. Heredity (Submitted)

11. Prowidenti, R., & R. Alconero. HortScience (In preparation, 1987)

12. Schroeder, W. T., & D. W. Barton. 1958. Phytopathology 48:628-632

13. Schroeder, W. T., & R. Prowidenti. 1971. Phytopathology 61:846-848.

14. Schroeder, W. T., R. Prowidenti, D.W. Barton, & W. Mishanec. 1966.
Phytopathology 56:113-117.

15. Yerr, D. E. & P. R. Fry. 1956. Austral. J. Agr. Res. 7:272-280.

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