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Diseases

Rice blast

Oryza sativa L.

A fungal disease of rice caused by Pyricularia oryzae, affecting all above-ground plant organs. It is characterized by high pathogen variability and the presence of specific Pi- resistance genes in the crop genotype.

In the reference 159 varieties crop Rice, where this is mentioned in the description.

The disease is caused by the imperfect fungus Pyricularia oryzae Cavara. The pathogen population includes over 30 physiological races with a high capacity for variability, which leads to the rapid overcoming of varietal resistance. The disease manifests in leaf, nodal, and panicle forms, causing leaf necrosis, stem breakage, and panicle sterility.

In rice breeding, resistance to the pathogen is controlled by specific genes with the Pi- prefix (e.g., Pi-ta2, Pi-9, Pi-2, Pi-b, Pi-1, Pi-33, Pi-40, Pi-z(t)). The modern protection strategy is based on pyramiding several such genes into a single genotype, which allows for increased stability of resistance against local fungal populations.

General information about the subject — on the page Rice blast.

Sources8

Varieties of Rice mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.

CL 71

Active

Oryza sativa L. · Rice

ENTE NAZIONALE RISI

IT
5 records

CL 26

Active

Oryza sativa L. · Rice

ENTE NAZIONALE RISI

IT
5 records

Vasco

Active

Oryza sativa L. · Rice

LUGANO LEONARDO SRL

IT
6 records

Musa

Active

Oryza sativa L. · Rice

Sardo Piemontese Sementi Soc. Coop. Società Agricola

IT
6 records

Meco

Active

Oryza sativa L. · Rice

SECE SAS

IT
6 records

Guadiagran

Active

Oryza sativa L. · Rice

INSTITUTO HISPANICO DEL ARROZ, S.A. (HISPARROZ)

ES
7 records

Gloria

Active

Oryza sativa L. · Rice

LUGANO LEONARDO SRL

IT
6 records

Zena

Active

Oryza sativa L. · Rice

S.I.S. SOCIETA' ITALIANA SEMENTI

IT PT
5 records

Thaibonnet

Active

Oryza sativa L. · Rice

CALIF.CO.RICE

ES IT
6 records

Cripto

Active

Oryza sativa L. · Rice

EN.N.RISI

ES IT
5 records

Vulcano

Active

Oryza sativa L. · Rice

Sardo Piemontese Sementi Soc. Coop. Società Agricola

IT
5 records

Teti

Active

Oryza sativa L. · Rice

Almo S.p.A.

IT
6 records

Teseo

Active

Oryza sativa L. · Rice

Almo S.p.A.

IT
5 records

Sprint

Active

Oryza sativa L. · Rice

ZELENSKIJ GRIGORIJ LEONIDOVICh / LOS' GALINA DANILOVNA / ALEShIN EVGENIJ PAVLOVICh / TRET'YaKOV ALEKSANDR RYuRIKOVICh / SEMENOVA LARISA MIHAJLOVNA

IT
4 records

Ninfa

Active

Oryza sativa L. · Rice

Almo S.p.A.

IT
5 records

Nerone

Active

Oryza sativa L. · Rice

LUGANO LEONARDO SRL

IT
5 records

Mirko

Active

Oryza sativa L. · Rice

LUGANO LEONARDO SRL

IT
5 records

Medea

Active

Oryza sativa L. · Rice

Almo S.p.A.

IT
5 records

Mare CL

Active

Oryza sativa L. · Rice

Sardo Piemontese Sementi Soc. Coop. Società Agricola

IT
5 records

Giano

Active

Oryza sativa L. · Rice

Almo S.p.A.

IT
5 records

Giglio

Active

Oryza sativa L. · Rice

S.I.S. SOCIETA' ITALIANA SEMENTI

IT
5 records

Fedra

Active

Oryza sativa L. · Rice

Almo S.p.A.

IT
5 records

Eurosis

Active

Oryza sativa L. · Rice

S.I.S. SOCIETA' ITALIANA SEMENTI

IT
6 records

Elettra

Active

Oryza sativa L. · Rice

Almo S.p.A.

IT
5 records