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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.

Oryza sativa L. · Rice

BASF S.A

ES
2 records

Tigre

Active

Oryza sativa L. · Rice

ENTE NAZIONALE RISI

IT
3 records

Oryza sativa L. · Rice

NAIK Öntözési és Vízgazdálkodási Önálló Kutatási Oszály, Szarvas

HU
2 records

Susan

Terminated

Oryza sativa L. · Rice

Semillas Certificadas Castells S.L.

ES
3 records

Salvo

Terminated

Oryza sativa L. · Rice

Giampiero Vale^^^Elisabetta Lupotto

IT
3 records

Mirwa

Active

Oryza sativa L. · Rice

BILONI MASSIMO ITALY

BG
2 records

Mareny

Terminated

Oryza sativa L. · Rice

INIA/IVIA

ES
3 records

Mida

Terminated

Oryza sativa L. · Rice

ENTE NAZIONALE RISI

IT
2 records

Luxor

Terminated

Oryza sativa L. · Rice

CREA-CENTRO DI RICERCA INGEGNERIA E TRASFORMAZIONI AGROALIMENTARI (CREA-IT-RM)

IT
2 records

Icaro

Terminated

Oryza sativa L. · Rice

ENTE NAZIONALE RISI

IT
2 records

Ispaniki "A"

Protection expired

Oryza sativa L. · Rice

HAO-DEMETER - Cereal Institute

GR
3 records

Oryza sativa L. · Rice

Massimo Biloni

BG
3 records

Clxl729

Active

Oryza sativa L. · Rice

RICE TEC INC.

IT
2 records

Oryza sativa L. · Rice

COOP. PRODUCTORES SEMILLAS DE ARROZ, SCL (COPSEMAR)

ES
2 records

Oryza sativa L. · Rice

IVIA (DPTO. ARROZ)/INIA

ES
3 records

CL261

Active

Oryza sativa L. · Rice

Louisiana State University Agricultural Center

IT
2 records

Baixet

Terminated

Oryza sativa L. · Rice

IVIA (DPTO. ARROZ)/INIA

ES
3 records

Oryza sativa L. · Rice

Eugenio Gentinetta (IT)

BG
2 records

SJKK

Active

Oryza sativa L. · Rice

Bertone Sementi S.p.A.

2 records

Oryza sativa L. · Rice

Società Agricola Melotti Giuseppe & C. s.s.

2 records

Oryza sativa L. · Rice

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

ES
4 records

Oryza sativa L. · Rice

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

ES
3 records

Renar

Active

Oryza sativa L. · Rice

Tuman`ian Natalia Heorhiivna, Kharchenko Olena Semenivna, Kharitonov IEvhenii Mykhailovych, Kizinek Serhii Volodymyrovych, Los` Halyna Danylivna, Zynnyk Oleksandr Mykolaiovych, Kovalev Viktor Saveliiovych,

UA
4 records

Hispasen

Active

Oryza sativa L. · Rice

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

ES
3 records