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Diseases

Blossom-end rot

Blossom-end rot is a physiological metabolic disorder caused by a local calcium deficiency in fruit tissues. It manifests as sunken dark spots at the blossom end of the fruit under conditions of water or temperature stress.

Mentioned in descriptions 922 varieties reference book.

Blossom-end rot is a non-infectious physiological disorder caused by impaired calcium transport to the fruits. A watery spot forms at the apex of the developing fruit, which eventually darkens, becomes sunken, and turns dark brown or black with a dry surface.

The development of the disease depends on environmental conditions, including water and temperature stress, as well as nutrient imbalances in the soil. Risk factors include sudden fluctuations in moisture, high air temperatures, excessive nitrogen or calcium antagonist levels, and increased soil acidity.

Genetic resistance of a variety is determined by the plant's ability to effectively distribute calcium and the structural stability of the fruit cell walls. Varieties with elongated fruit shapes, large-fruited types, and pink-fruited forms are the most susceptible to the pathology due to anatomical features and thinner skin.

Resistance assessment in variety trials is conducted through phytopathological monitoring, taking into account the percentage of affected plants and the intensity of necrosis. To differentiate genetic resistance from the influence of agrotechnical factors, trials require standardized growing conditions.

Sources10

Breakdown by crop

Found in these crops

Varieties that feature this in their description

Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.

Solanum lycopersicum L. · Tomato

Domaine Public (FR)

FR
2 records

CBA 500

Active

Capsicum annuum L. · Bell pepper

Paulina Bartkowska Gospodarstwo Hodowlano - Nasienne Bartkowscy

PL
2 records

Clipeo

Active

Capsicum annuum L. · Bell pepper

RAMIRO ARNEDO, S.A.

ES
2 records

Christian

Terminated

Solanum lycopersicum L. · Tomato

WESTERN SEED ESPAÑA, S.A.

ES
2 records

Solanum lycopersicum L. · Tomato

Enza Zaden Beheer B.V.

NL
3 records

Bossanova

Terminated

Capsicum annuum L. · Bell pepper

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
3 records

Solanum lycopersicum L. · Tomato

HM.Clause S.A.S.

FR
3 records

Solanum lycopersicum L. · Tomato

Bejo Zaden B.V.

NL
3 records

Baroncino

Application submitted

Solanum lycopersicum L. · Tomato

Syngenta Crop Protection AG

NL
3 records

Capsicum annuum L. · Bell pepper

PLANTICO HODOWLA I NASIENNICTWO OGRODNICZE ZIELONKI SP. Z O.O.

PL
2 records

Armylla

Active

Solanum lycopersicum L. · Tomato

SEMILLAS FITO, S.A.

ES
2 records

Solanum lycopersicum L. · Tomato

UNITED GENETICS SEEDS CO

PT
2 records

Araldino

Active

Solanum lycopersicum L. · Tomato

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
4 records

Alderney

Active

Capsicum annuum L. · Bell pepper

Enza Zaden Beheer B.V.

NL
3 records

Capsicum annuum L. · Bell pepper

CZ IT
3 records

Multiset

Terminated

Solanum lycopersicum L. · Tomato

CZ NL SK
3 records

Katinka

Active

Solanum lycopersicum L. · Tomato

NL SK
4 records

Lozorno

Active

Capsicum annuum L. · Bell pepper

NL
3 records

Ferrari

Active

Capsicum annuum L. · Bell pepper

NL
3 records

Solanum lycopersicum L. · Tomato

SI
2 records

Bellisa

Active

Capsicum annuum L. · Bell pepper

NL
3 records

Solanum lycopersicum L. · Tomato

NL
2 records

Torero

Terminated

Capsicum annuum L. · Bell pepper

DE
2 records