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Diseases

Pear Brown Rot

Pyrus communis L.

A fungal disease of pear trees manifesting as fruit rot and blossom blight. The causative agent is predominantly the ascomycete Monilinia fructigena.

In the reference 35 varieties crop European pear, where this is mentioned in the description.

The primary pathogen of fruit rot in pears is the ascomycete Monilinia fructigena, whereas blossom blight is more commonly associated with the fungus Monilinia cinerea. Resistance of pear cultivars to this disease is polygenic in nature, and specific resistance genes have not been identified.

With fruit rot, brown spots form on the pear fruits, and the flesh becomes spongy and develops an alcoholic taste. Conidial spore cushions, often arranged in concentric circles, form on the fruit surface. Under storage conditions, the fruits mummify, turn black, and develop a glossy sheen.

Blossom blight manifests as the browning and wilting of flowers, ovaries, and fruit twigs, which do not fall off for a long time. The penetration of mycelium into the wood can lead to the death of affected branches. Intraspecific differentiation of the pathogen into specific races for pears is not applied in agronomic practice.

General information about the subject — on the page Moniliasis (fruit rot).

Sources8

Varieties of European pear 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.

Verdi

Active

Pyrus communis L. · European pear

VERHAEGH JACOBUS JOHANNES

BE FR HU IT NL PL
17 records

Selija

Active

Pyrus communis L. · European pear

Rudolfs Dumbravs

LV
2 records

Kadi

Active

Pyrus communis L. · European pear

Kalju Kask 100%

EE
4 records

Merodova

Active

Pyrus communis L. · European pear

CZ SK
5 records

Windsorská

Active

Pyrus communis L. · European pear

CZ
4 records

Lucas

Active

Pyrus communis L. · European pear

SI
2 records

Gute Graue

Active

Pyrus communis L. · European pear

SI
5 records

Dvorní

Active

Pyrus communis L. · European pear

CZ
4 records

VELTE

Terminated

Pyrus communis L. · European pear

Rudolfs Dumbravs

LV
1 record

Liepona

Terminated

Pyrus communis L. · European pear

Lietuvos agrarinių ir miškų mokslų centro filialas Sodininkystės ir daržininkystės institutas

LT
1 record

Gaisra

Terminated

Pyrus communis L. · European pear

Lietuvos agrarinių ir miškų mokslų centro filialas Sodininkystės ir daržininkystės institutas

LT
1 record