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 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.

Boglarka

Active

Cicer arietinum L. · Chickpea

2 records

Acclaim

Active

Pisum sativum L. · Pea

2 records

Brigit

Active

Phaseolus vulgaris L. · Common bean

2 records

Rozanna

Active

Cicer arietinum L. · Chickpea

2 records

Macho

Active

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

2 records

ZOCO

Active

Cicer arietinum L. · Chickpea

INIA/U.CORDOBA/J.ANDALUCI

2 records

Symfoniia

Terminated

Glycine max (L.) Merr. · Soybean

Sheliakin Viktor Oleksiiovych, Tymchuk Serhii Mykhailovych, Sierikova Liubov Hryhorivna, Chernyshenko Pavlo Volodymyrovych, Riabukha Serhii Stanislavovych, Sokol Tetiana Volodymyrivna,

3 records

SAORET

Active

Vicia narbonensis L. · French vetch

INIA/IFAPA(Salvador Nadal Moyano, Clara Isabel González Verdejo, Eva María Córdoba Jiménez)

2 records

Ҫakir

Active

Cicer arietinum L. · Chickpea

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

1 record

ZEGRI

Terminated

Cicer arietinum L. · Chickpea

INIA-OTRI

1 record

Veselyk

Terminated

Pisum sativum L. · Pea

Yanivs`kyi Ihor Mykolaiovych, Bodnarenko Klavdiia Borysivna, Ukrainets` Viktor Valentynovych, Kaz`miruk Halyna Fedorivna, Stebnovs`ka Anzhela IAkymivna, Kaliuzhna Emiliia Al`oziivna, Kuz` Vasyl` Volodymyrovych, Rozvadovs`kyi Al`ozii Martynovych,

2 records

Taverna

Active

Glycine max (L.) Merr. · Soybean

Mursakaiev El`dar Shamil`ovych, Molodchenkova Olha Olehivna, Bushulian Oleh Volodymyrovych, Hanzhelo Olha Ivanivna, Lavrova Halyna Dmytrivna, Sichkar Viacheslav Ivanovych,

2 records

Soltan

Active

Helianthus annuus L. · Sunflower

Hyskie Ivan Mykolaiovych, Bohdan Ihor` Vyktorovych,

2 records

Stego

Terminated

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

Instytut Hodowli i Aklimatyzacji Roslin Panstwowy Instytut Badawczy

2 records

Snaigiai

Terminated

Lupinus angustifolius L. · Narrow-leaf lupin

Lietuvos agrarinių ir miškų mokslų centro Vokės filialas

1 record

Rahel

Withdrawn

Pisum sativum L. · Pea

Saima Kalev 70%, Harri Hindoalla 30%

2 records

Rais F1

Active

Cucumis sativus L. · Cucumber

Shevkunov Valerii Mykolaiovych, Shamshyna Hanna Viacheslavivna, Portiankin Oleksii IEvhenovych, Havrysh Serhii Fedorovych,

2 records

Prystan`

Active

Pisum sativum L. · Pea

Bushulian Oleh Volodymyrovych, Sichkar V'iacheslav Ivanovych, Koblai Svitlana Volodymyrivna, Khukhlaiev Ivan Ivanovych,

2 records

Optimal

Terminated

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

Danko Hodowla Roslin Sp.z.o.o.

2 records

Oriana

Terminated

Glycine max (L.) Merr. · Soybean

Sherepitko Valentyn Vasyl`ovych, Kolot Valentyna Vasylivna, Mykhailov Viktor Oleksandrovych, Kolot Viktor Mykolaiovych, Kolisnyk Serhii Ivanovych, Temchenko Inna Viktorivna, Petrychenko Vasyl Florovych, Ivaniuk Serhii Vasyl`ovych, Babych Anatolii Oleksand

1 record

Olga

Terminated

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

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

2 records

Merlin

Terminated

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

SELGEN A.S

1 record

Mel`pomena

Terminated

Glycine max (L.) Merr. · Soybean

Hanzhelo Olha Ivanivna, Lavrova Halyna Dmytrivna, Sichkar V'iacheslav Ivanovych,

2 records

Loki

Withdrawn

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

Norddeutsche Pflanzenzucht Hans-Georg Lembke KG

1 record

1 2 3 4 5 6 7 8 9 10 11 12 Next

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.