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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 Common bean 8 Cucumber 8 Lentil 4 Common vetch 3 Hairy 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.

Strike

Protection expired

Pisum sativum L. · Pea

PURE LINE SEEDS

3 records

Pulsion

Active

Pisum sativum L. · Pea

Institut national de recherche pour l'agriculture, l'aliment (FR)/Agri Obtentions SA (FR)

DK FR
4 records

Vera

Active

Pisum sativum L. · Pea

TIMINA LIDIYa TIMOFEEVNA / EPIHOV VIKTOR ALEKSANDROVICh / PRONINA EKATERINA PAVLOVNA / SARAZhINSKAYa NADEZhDA IVANOVNA

SE
5 records

Tarchalska

Active

Pisum sativum L. · Pea

Danko Hodowla Roslin Sp.z.o.o.

PL
4 records

Milwa

Active

Pisum sativum L. · Pea

Hodowla Roslin Smolice Sp.z o.o Grupa IHAR

PL
4 records

Jutta

Terminated

Pisum sativum L. · Pea

W VON BORRIES-ECKENDORF GMBH & CO. KOMMANDITGESELLSCHAFT

DE
4 records

Horol

Active

Glycine max (L.) Merr. · Soybean

Sonets` Viktor Andriiovych, Pylypchenko Andrii Vasylovych, Tymchenko Viktor Naumovych, Marc Ham, Andre Letourneau, Alain Letourneau,

UA
6 records

Goksu

Active

Cicer arietinum L. · Chickpea

Mehmet Fatih Olgun

UA
3 records

Foudre

Active

Pisum sativum L. · Pea

Agri-Obtentions S.A., Institut National de Recherche pour l'Agriculture l'Alimentation et l'Environnement (INRAE)

FR
4 records

Belmondo

Active

Pisum sativum L. · Pea

Lemaire-Deffontaines

AT
4 records

Azkan

Active

Cicer arietinum L. · Chickpea

Geçit Kusagi Tarimsal Arst.Enst.Müd. (TR)

BG
3 records

Gobo

Terminated

Vicia faba L. · Broad bean

STEUCKARDT| Dr. Rudolf Steuckardt in Fa. Saatzucht Gotha-Friedrichswerth GmbH / SCHEYBAL| S. Scheybal in Fa. Thueringer Pflanzenzucht GmbH Gotha-Friedrichswerth / SCHNABEL| A.M. Schnabel in Fa. Thueringer Pflanzenzucht GmbH Gotha-Friedrichswerth

DE
6 records

Vulcain

Terminated

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

Serasem, FR

FR
2 records

Tytan

Active

Pisum sativum L. · Pea

Poznanska Hodowla Roslin Sp. z o.o

PL
3 records

Valma

Terminated

Pisum sativum L. · Pea

Maia Raudseping 70%, Valve Jaagus 25%, Kaljo Kask 5%

EE
3 records

Triada

Active

Glycine max (L.) Merr. · Soybean

Semtsov Anatolyi Vasl`ovych, Vil`hota Mykola Volodymyrovych, Babych Anatolii Oleksandrovych, Kolisnyk Serhii Ivanovych, Petrychenko Vasyl` Florovych, Temchenko Inna Viktorivna, Ivaniuk Serhii Vasyl`ovych,

UA
3 records

Tangenta

Terminated

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

Norddeutsche Pflanzenzucht Hans-Georg Lembke KG. Herrn Dr. Martin Frauen / Dr. O. Sass

DE
3 records

Taxi

Terminated

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

FRAUEN| Norddeutsche Pflanzenzucht Hans-Georg Lembke KG. Herrn Dr. Martin Frauen / SASS| Dr. O. Sass

DE
3 records

Tattoo

Terminated

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

Norddeutsche Pflanzenzucht Hans-Georg Lembke KG. Herrn Dr. Martin Frauen / Dr. O. Sass

DE
3 records

Sultano

Active

Cicer arietinum L. · Chickpea

CRINO' PAOLA / IAIANI MARCELLO / SACCARDO FRANCO

IT
3 records

Sokolik

Active

Pisum sativum L. · Pea

Poznanska Hodowla Roslin Sp. z o.o

PL
3 records

Rubis

Protection expired

Glycine max (L.) Merr. · Soybean

Caussade Semences SA (FR)/DAIRYLAND SEED Co Inc. (US)

FR
3 records

Protina

Active

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

P.H.PETERSEN SAATZUCHT LUNDSGAARD

IE
2 records

Pyramid

Terminated

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

Limagrain Advanta Nederland BV (NL)

FR
2 records