Diseases

Ascochyta blight

Ascochyta

Ascochyta blight is a group of fungal plant diseases characterized by the appearance of spots with punctate sporulation on leaves, stems, and pods. The disease significantly reduces seed germination and crop productivity, causing yield losses of up to 50% or more.

Mentioned in descriptions 821 varieties reference book.

Ascochyta blight manifests as spots of varying color — from light brown with a dark rim to dark brown with a depressed center. A characteristic diagnostic sign of the infection is the presence of small black dots in the center of the spots, called pycnidia. The infection affects the above-ground organs of plants, leading to thinning of seedlings, stem breakage, and underdevelopment of fruits.

The development of the pathogen depends on the presence of infection in the soil, on plant residues or seeds, as well as on environmental conditions. Optimal conditions for the fungus are high air humidity above 90% and a temperature range from +16 to +25°C. Factors contributing to the spread of the disease include prolonged rains, dense sowing, and excessive nitrogen nutrition, while temperatures above +30°C slow down or stop the development of the disease.

The assessment of variety resistance in variety trials is carried out on an artificial or provocative infection background created by irrigation and regulation of plant density. During the breeding process, the degree of organ damage, yield stability under different infection loads, and plant homeostaticity are analyzed, i.e., their genetic ability to maintain productivity when exposed to the pathogen and environmental stress factors.

Sources10

Breakdown by crop

Ascochyta blight of pea 114 Ascochyta blight of chickpea 46 Ascochyta blight of soybean 25 Ascochyta blight of fava bean 19 Ascochyta blight of fava bean 14 Ascochyta blight of faba bean 11 Ascochyta blight of cucumber 9 Ascochyta blight of bean 7 Ascochyta blight of melon 4 Ascochyta blight of lentil 4 Ascochyta blight of common vetch 3 Ascochyta blight of hairy vetch 3

Found in these crops

Pea 120 Chickpea 48 Soybean 25 Tick Bean 23 Broad bean 16 Horse bean 13 Cucumber 8 Common bean 8 Lentil 4 Hairy vetch 3 Common vetch 3 Sunflower 2

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.

LSP 1259

Withdrawn

Pisum sativum L. · Pea

LABOULET SEMENCES

1 record

Longimuna

Terminated

Phaseolus vulgaris L. · Common bean

SCHREIBER FRITZ (DE)

1 record

Kamir

Terminated

Vicia faba L. var. equina St.-Amans · Horse bean

Hodowla Roslin Szelejewo sp.z.o.o.

1 record

Kadet F1

Terminated

Cucumis sativus L. · Cucumber

Prutenskaia Nataliia Oleksiivna, Shamshyna Anna Viacheslavovna, Portiankin Alieksiei IEvhenovych, Havrysh Serhii Fedorovych,

1 record

Kingsford

Application submitted

Vicia villosa Roth · Hairy vetch

South Australian Research and Development Institute (Sardi)

1 record

Jasny

Terminated

Vicia faba L. var. equina St.-Amans · Horse bean

Instytut Hodowli i Aklimatyzacji Roslin Panstwowy Instytut Badawczy

2 records

ITALICA

Active

Cicer arietinum L. · Chickpea

AGROVEGETAL, S.A.

2 records

Ilgiai

Terminated

Pisum sativum L. · Pea

Lietuvos agrarinių ir miškų mokslų centro filialas Žemdirbystės institutas

1 record

Harri

Terminated

Lens culinaris Medik. · Lentil

HELIUKH VOLODYMYR MYKOLAIOVYCH, KARPENKO OLEKSANDR OLEKSANDROVYCH, KARPENKO OLEKSANDR OLEKSANDROVYCH

2 records

GL Arabella

Terminated

Vicia faba L. var. equina St.-Amans · Horse bean

Saatzucht Gleisdorf

1 record

Granit

Active

Vicia faba L. var. equina St.-Amans · Horse bean

Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR

2 records

GARBELO

Active

Cicer arietinum L. · Chickpea

SEMILLAS BATLLE, S.A.

1 record

GARABITO

Active

Cicer arietinum L. · Chickpea

ITACYL (CASTILLA Y LEON)

1 record

FARDON

Active

Cicer arietinum L. · Chickpea

INIA-OTRI

1 record

EL ENCIN G 2 ALMENA

Terminated

Cicer arietinum L. · Chickpea

INIA-OTRI

1 record

ERFORDIA

Protection expired

Vicia faba L. var. minuta (hort. ex Alef.) Mansf. · Tick Bean

VEG SAATZUCHT

2 records

Erygel

Terminated

Pisum sativum L. · Pea

INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR

2 records

Domino

Active

Vicia faba L. var. equina St.-Amans · Horse bean

Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR

2 records

Diego

Active

Vicia faba L. var. equina St.-Amans · Horse bean

Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR

2 records

Diietychnyi

Terminated

Avena nuda L. · Naked oat

Skoryk Viktor Varfolomiiovych, Yehorova Tetiana Volodymyrivna, Vorozhko Svitlana Pavlivna, Parii Myroslav Fedorovych, Parii IUliia Oleksandrivna, Parii IAroslav Fedorovych, Kulyk IUliia Fedorivna, Riabovol Liudmyla Olehivna, Necheporenko Liudmyla Pavlivna

2 records

CHICO

Active

Pisum sativum L. · Pea

VARIOS OBTENTORES

1 record

CHICANA

Active

Pisum sativum L. · Pea

Diego Rubiales Olmedo/Ana Moral Jiménez/María José González Bernal

1 record

Bobas

Active

Vicia faba L. var. equina St.-Amans · Horse bean

Danko Hodowla Roslin Sp.z.o.o.

2 records

Budzhak

Active

Cicer arietinum L. · Chickpea

Sichkar V'iacheslav Ivanovych, Bushulian Oleh Volodymyrovych,

2 records

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Diseases

Powdery mildew 33 570
Fusarium wilt and blight 29 887
Viral mosaic diseases 22 022
Downy mildew 16 384
Leaf spot diseases 15 926
Rust 14 859
Verticillium wilt 12 175
Scab 12 064

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Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.