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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.

Ducato

Active

Oryza sativa L. · Rice

Giampiero Vale^^^Elisabetta Lupotto

IT
5 records

Dardo

Active

Oryza sativa L. · Rice

Almo S.p.A.

IT
6 records

Cl111

Active

Oryza sativa L. · Rice

Louisiana State University Agricultural Center

IT
5 records

CL28

Active

Oryza sativa L. · Rice

ENTE NAZIONALE RISI

IT
5 records

CL12

Active

Oryza sativa L. · Rice

Ente Nazionale Risi, BASF Agrochemical Products B.V.

IT
5 records

CL46

Active

Oryza sativa L. · Rice

Ente Nazionale Risi, BASF Agrochemical Products B.V.

IT
5 records

CL33

Active

Oryza sativa L. · Rice

ENTE NAZIONALE RISI

IT
5 records

Albatros

Active

Oryza sativa L. · Rice

Almo S.p.A.

IT
5 records

Halilbey

Active

Oryza sativa L. · Rice

Trakya Agricultural Research Institute (TR)

BG
4 records

VI.NA.RPi

Active

Oryza sativa L. · Rice

BERTONE SEMENTI SPA / CREA- CENTRO DI RICERCA PER LA CEREALICOLTURA (CREA-CI-VC)

IT
4 records

IRES 1117

Active

Oryza sativa L. · Rice

BILONI MASSIMO

IT
3 records

Copsemar 7

Active

Oryza sativa L. · Rice

Cooperativa de Productores de Semillas de Arroz S.C.L.

ES
4 records

Copsemar 9

Active

Oryza sativa L. · Rice

Cooperativa de Productores de Semillas de Arroz S.C.L.

ES
4 records

CL142-AR

Active

Oryza sativa L. · Rice

The Board Of Trustees Of The University Of Arkansas

2 records

CL181-AR

Active

Oryza sativa L. · Rice

The Board Of Trustees Of The University Of Arkansas

2 records

Tarriso

Terminated

Oryza sativa L. · Rice

IT PT
4 records

Onda

Active

Oryza sativa L. · Rice

IT PT
5 records

Maratelli

Active

Oryza sativa L. · Rice

HR IT
5 records

Bomba

Active

Oryza sativa L. · Rice

ES
4 records

Leda

Active

Oryza sativa L. · Rice

INIA/IVIA

ES IT
4 records

Stradivari

Active

Oryza sativa L. · Rice

S.I.S. SOCIETA' ITALIANA SEMENTI

IT
4 records

Forte

Active

Oryza sativa L. · Rice

BILONI MASSIMO

IT
3 records

Caroly

Active

Oryza sativa L. · Rice

RISO GALLO S.P.A.

IT
4 records

Virgo

Active

Oryza sativa L. · Rice

Sardo Piemontese Sementi Soc. Coop. Società Agricola

IT
4 records