MONITORING OF BLACK CURRANT VARIETIES RESISTANCE TO COLUMNAR RUST

1970 ◽  
pp. 37-40
Author(s):  
А. Yu. Bakhotskaya ◽  
S. D. Knyazev
Keyword(s):  
Powdery Mildew ◽  
Wild Species ◽  
Selection Process ◽  
Inheritance Of Resistance ◽  
Hybrid Progeny ◽  
Black Currant ◽  
Protective Measures ◽  
Remote Hybridization ◽  
Derivatives Of ◽  
Variety Testing

As a result of the studies, we found that the bulk of the studied black currant varieties are more or less susceptible to columnar rust. Both derivatives of the European, Siberian subspecies and dikusha currant and species obtained with usage Scandinavian subspecies are characterized by high sensibility to this disease. In the European zone the most widespread and harmful are the fungal diseases of black currant - septoriosis, anthracnose, powdery mildew. Substantial damage to this culture plantations is caused by epiphytoty which repeated every three to four years. In contrast to American mildew, columnar rust intensely affects plants during the mass ripening of berries, which makes it difficult to carry out protective measures. The most effective method for solving this problem was the remote hybridization which is participation of wild species with the necessary characteristics, but their involvement leads to deceleration of the selection process, as apart from the necessary characteristics they have those that reduce the value of hybrid progeny, and it takes several hybrid generations to achieve the necessary results. In the Institute on the base on disjoining of hybrid progeny was established the oligogenic nature of the inheritance of resistance to columnar rust in currant derivatives. It was revealed that it confers immunity to columnar rust in addition combines immunity with American powdery mildew. As a result, the Re gene was identified, as well as Kipian and Gamma varieties, which are actively used as immunity donors. Assessment of varieties for resistance to diseases and pests was carried out in the areas of primary variety testing according to the methodology for the study of fruit, berry and nut-bearing crops.

PRELIMINARY ASSESSMENT OF A BLACK CURRANT NEW HYBRID MATERIAL FOR RESISTANCE TO BIOTIC FACTORS

1970 ◽  
pp. 37-39
Author(s):  
А. Yu. Bakhotskaya ◽  
S. D. Knyazev
Keyword(s):  
Powdery Mildew ◽  
High Resistance ◽  
Selection Process ◽  
Cultivated Plants ◽  
Biotic Factors ◽  
Preliminary Assessment ◽  
Black Currant ◽  
Speed Up ◽  
Derivatives Of

 Resistance to diseases and pests is one of the main tasks of a breeder when creating varieties of cultivated plants. On perennial plants, which include black currants, diseases have a significant impact on the quantity and quality of the formed yield, as well as on the laying of the subsequent yield. Constant screening of new breeding material allows not only to select and isolate promising highly resistant forms at the early stages of ontogenesis, but also, as a result, to speed up the entire selection process of creating immune varieties. As a result of our research, we found that the bulk of the studied hybrid seedlings in 2019-2020 were resistant to American powdery mildew and columnar rust. High resistance to American powdery mildew is characteristic of derivatives of glutinous currant and the Scandinavian subspecies of black currant. Also, the derivatives of glutinous currant are characterized by high resistance to columnar rust.

NEW VARIETIES OF CURRANTS AND GOOSEBERRY BREEDING PLANTS

1970 ◽  
pp. 41-46
Author(s):  
O. D. Golyaeva ◽  
O. V. Kurashev ◽  
S. D. Knyazev ◽  
А. Yu. Bakhotskaya
Keyword(s):  
Powdery Mildew ◽  
Genetic Basis ◽  
Black Currant ◽  
Leaf Spots ◽  
Agricultural Sciences ◽  
Berry Crops ◽  
New Varieties ◽  
First Time ◽  
Red Currant

The main goal of the scientific institution was and remains to improve the assortment of fruit and berry crops for the development of domestic horticulture. Black currant breeding at VNIISPK was started by A.F Tamarova and continued by the doctor of agricultural Sciences T.P.Ogoltsova and doctor of agricultural Sciences S.D. Knyazev. A long-term breeding program has been developed. The main goals of the program are to create black currant cultivars with continuous resistance to diseases, first of all powdery mildew, as wells resistance to pests, i.e. bud mite. As a result of the long-term work, over 40 black currant cultivars have been developed, 14 of them are zoned. Red currant breeding was led by the candidate of agricultural Sciences L.V. Bayanova; since 2001 the work has been continued by the candidate of agricultural Sciences O.D. Golyaeva. ‘Heinemanns Rote Spӓtlese’, the descendant of R. multiflorum Kit., was involved in the red currant breeding for the first time in Russia. On its genetic basis, a series of late maturing cultivars with long and dense racemes was created. At the Institute, in total 21cultivars of red currants have been developed, 13 of them are zoned. At present, red currant cultivars make up 25.5% of the zoned assortment in Russia. The first research on gooseberries was stated by V.P. Semakin and A.F Tamarova; since 1992 the systematic gooseberry breeding has been carried out by the candidate of agricultural Sciences O.V. Kurashev. On the basis of Grossularia robusta, we have created gooseberry forms that are resistant to powdery mildew and leaf spots. These forms are highly productive, weakly thorned, having bush habit suitable for mechanized harvest. The result of breeding activities was the transfer of 6 gooseberry cultivars to State agricultural testing: ‘Solnechny Zaychik’, ‘Nekrasovsky’, ‘Yupiter’, ‘Zemlianichny’, ‘Moryachok’ and ‘Discovery’.

Achievements in breeding and main directions for improving black currant adssortment in Federal Horticultural Research Center for Breeding, Agrotechnology and Nursery

2021 ◽  
Vol 67 ◽  
pp. 18-28
Author(s):  
F. F. Sazonov
Keyword(s):  
Powdery Mildew ◽  
Base Station ◽  
Research Center ◽  
Sources Of Resistance ◽  
Black Currant ◽  
Genetic Origin ◽  
State Register ◽  
Leaf Spots ◽  
Breeding Research ◽  
Horticultural Research

The article presents the main results of twenty years of research carried out at the Federal Horticultural Research Center for Breeding, Agrotechnology and Nursery (Kokino Base Station) on the search and creation of various genetic origin genotypes and the possibility of their use in further breeding work on black currants. The created genetic sources of resistance to American powdery mildew, leaf spots (canker, septoria, cercosporosis), large-fruited, berries’ high vitamin С content, fruit strength, plant productivity are presented: 7-37-2 (Litvinovskaya × Dar Smolyaninovoy), 37-27-4/05 (Debryansk, free pollination), 63-35-1 (Lentyay × Debryansk), 68-03-1 (Charodey × Yadryonaya), 5-66-5 (Dobrynya, free pollination), 13-51-1 (Shalunya, free pollination), 33-27-1 (Strelets × Selechenskaya 2) etc. As a result of breeding research, 12 black currant varieties have been created, eight of which (Bryanskiy Agate, Debryansk, Mif, Vera, Gamayun, Strelets, Charodey, Barmaley) are included in the State Register of Breeding Achievements, approved for using.

Inheritance of resistance to powdery mildew in flax

2005 ◽  
Vol 27 (3) ◽  
pp. 404-409 ◽  
Author(s):  
Khalid Rashid ◽  
Scott Duguid
Keyword(s):  
Powdery Mildew ◽  
Inheritance Of Resistance

Chromosome constitution and origin analysis in three derivatives of Triticum aestivum – Leymus mollis by molecular cytogenetic identification

Genome ◽  
2014 ◽  
Vol 57 (11/12) ◽  
pp. 583-591 ◽  
Author(s):  
Xiaofei Yang ◽  
Changyou Wang ◽  
Chunhuan Chen ◽  
Hong Zhang ◽  
Zengrong Tian ◽  
...  
Keyword(s):  
Triticum Aestivum ◽  
Powdery Mildew ◽  
Common Wheat ◽  
Stripe Rust ◽  
Wheat Breeding ◽  
Chromosome Constitution ◽  
Disease Resistances ◽  
Derivatives Of ◽  
Leymus Mollis

Leymus mollis (2n = 4x = 28, NsNsXmXm) is an important tetraploid species in Leymus (Poaceae: Triticeae) and a useful genetic resource for wheat breeding because of the stress tolerance and disease resistance of this species. The development of Triticum aestivum (common wheat) – L. mollis derivatives with desirable genes will provide valuable bridge materials for wheat improvement, especially regarding powdery mildew resistance genes, which are rarely documented in L. mollis. In the present study, three derivatives of common wheat cultivar 7182 and L. mollis, namely M47, M51, and M42, were subjected to chromosomal characterization via cytogenetic identification, the analysis of molecular markers, and genomic in situ hybridization. These derivatives were all morphologically and cytogenetically stable. M47 was highly resistant to powdery mildew and nearly immune to stripe rust at the adult stage, and the chromosome constitution of this derivative can be expressed as 2n = 56 = 42T.a + 14L.m (where T.a = T. aestivum chromosomes; L.m = L. mollis chromosomes). Compared to M47, M42 was also resistant to stripe rust but was susceptible to powdery mildew; the chromosome constitution of M42 was 2n = 54 = 42T.a + 12L.m, in which a pair of homoeologous group 7 L.m chromosomes was eliminated. Finally, M51 was susceptible to powdery mildew and stripe rust and had a chromosome constitution of 2n = 48 = 42T.a + 6L.m, in which four pairs of L.m chromosomes from homoeologous groups 2, 4, 5, and 7 were eliminated. The differing disease resistances of the three derivatives are discussed in this report in the context of their chromosomal variations; this information can thus contribute to breeding disease resistant wheat with the potential for applying these derivatives as useful bridge materials.

scholarly journals Evaluation and Pre-selection of New Grapevine Genotypes Resistant to Downy and Powdery Mildew, Obtained by Cross-Breeding Programs in Spain

2021 ◽  
Vol 12 ◽  
Author(s):  
Leonor Ruiz-García ◽  
Pilar Gago ◽  
Celia Martínez-Mora ◽  
José Luis Santiago ◽  
Diego J. Fernádez-López ◽  
...  
Keyword(s):  
Molecular Markers ◽  
Powdery Mildew ◽  
Simple Sequence Repeat ◽  
Selection Process ◽  
Sequence Repeat ◽  
Sources Of Resistance ◽  
Breeding Programs ◽  
Phenotypic Resistance ◽  
Simple Sequence ◽  
Selection Of

The need to develop an environmentally friendly, sustainable viticulture model has led to numerous grapevine improvement programmes aiming to increase resistance to downy and powdery mildew. The success of such programmes relies on the availability of protocols that can quantify the resistance/susceptibility of new genotypes, and on the existence of molecular markers of resistance loci that can aid in the selection process. The present work assesses the degree of phenotypic resistance/susceptibility to downy and powdery mildew of 28 new genotypes obtained from crosses between “Monastrell” and “Regent.” Three genotypes showed strong combined resistance, making them good candidates for future crosses with other sources of resistance to these diseases (pyramiding). In general, laboratory and glasshouse assessments of resistance at the phenotype level agreed with the resistance expected from the presence of resistance-associated alleles of simple sequence repeat (SSR) markers for the loci Rpv3 and Ren3 (inherited from “Regent”), confirming their usefulness as indicators of likely resistance to downy and powdery mildew, respectively, particularly so for downy mildew.

Inheritance of Resistance to Powdery Mildew in Wheat 1

1954 ◽  
Vol 46 (8) ◽  
pp. 379-383 ◽  
Author(s):  
D. A. Ray ◽  
T. T. Hebert ◽  
G. K. Middleton
Keyword(s):  
Powdery Mildew ◽  
Inheritance Of Resistance
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