White rust resistance and its association with parental species type and leaf waxiness in Brassica juncea L. Czern & Coss � Brassica napus L. crosses under the action of EDTA and gamma-ray

Euphytica ◽  
1994 ◽  
Vol 74 (1-2) ◽  
pp. 1-7 ◽  
Author(s):  
Prasanta Kumar Subudhi ◽  
Ram Narayan Raut
Keyword(s):  
Brassica Napus ◽  
Brassica Juncea ◽  
Rust Resistance ◽  
Gamma Ray ◽  
Parental Species ◽  
Brassica Napus L ◽  
White Rust ◽  
Species Type ◽  
Leaf Waxiness

scholarly journals Analysis of diseases affecting winter and spring forms of Brassica napus L. and Brassica juncea L. in the central zone of the Krasnodar region

2021 ◽  
Vol 937 (3) ◽  
pp. 032114
Author(s):  
O A Serdyuk ◽  
V S Trubina ◽  
L A Gorlova
Keyword(s):  
Brassica Napus ◽  
Brassica Juncea ◽  
High Frequency ◽  
Bacterial Blight ◽  
Low Frequency ◽  
Central Zone ◽  
Occurrence Frequency ◽  
Brassica Napus L ◽  
White Rust ◽  
Krasnodar Region

Abstract The purpose of the research was a comparative evaluation of the disease affection of spring and winter forms of Brassica napus and Brassica juncea on the central zone of the Krasnodar region. Phytosanitary monitoring of diseases was carried out from the seedling stage. In 2011-2020, there were identified the diseases affecting winter and spring crops Brassica napus and Brassica juncea to the same extent: the occurrence frequency of downy mildew and powdery mildew was high, of Alternaria blight – from medium to high, of phytoplasma and bacterial blight – low. Differences are established for Sclerotinia disease, Phoma rot, Fusarium blight, white rust, gray rot. The occurrence frequency of Sclerotinia disease on winter form of Brassica napus and Brassica juncea varied in research years from low to medium, of Phoma rot – from medium to high; on spring forms, these diseases were noted in certain years with the low frequency. Fusarium blight affected only sowings of spring forms of Brassica napus and Brassica juncea with medium and high frequency, except for 2018-2019, when it was low. White rust affected only spring from of Brassica napus, gray rot – only winter forms of Brassica napus and Brassica juncea in certain years with the low frequency.

scholarly journals Inheritance of resistance to Albugo candida in rape (Brassica napus L.)

1983 ◽  
Vol 25 (5) ◽  
pp. 420-424 ◽  
Author(s):  
Z. Fan ◽  
S. R. Rimmer ◽  
B. R. Stefansson
Keyword(s):  
Brassica Napus ◽  
Genetic Study ◽  
Rust Resistance ◽  
Resistant Cultivar ◽  
Inheritance Of Resistance ◽  
Brassica Napus L ◽  
Albugo Candida ◽  
White Rust ◽  
Dominant Genes

Canadian cultivars of Brassica napus are resistant to white rust caused by Albugo candida while many cultivars of this species grown in China are susceptible. Two Chinese lines susceptible to race 7, GCL, and 2282-9, and one Canadian resistant cultivar, 'Regent,' were chosen for a genetic study of resistance to this pathogen. Inheritance of white rust resistance is conditioned by independent dominant genes at three loci; these were designated Ac7-1, Ac7-2, and Ac7-3. The resistance is conferred by dominance at any one of the three loci and plants with recessive alleles at all loci are susceptible. Since different F2 and BC ratios were obtained for populations derived from different individual plants of 'Regent,' this 'Regent' population is not homogeneous for resistance to white rust. All 'Regent' plants appear to be homogeneous for resistance at two loci while, in addition, some may also carry resistance at a third locus.

Validation of molecular markers for marker-assisted pyramiding of white rust resistance loci in Indian Mustard (Brassica juncea L.)

2015 ◽  
Vol 95 (5) ◽  
pp. 939-945 ◽  
Author(s):  
Binay K. Singh ◽  
Divakar Nandan ◽  
Supriya Ambawat ◽  
Bhagirath Ram ◽  
Arun Kumar ◽  
...  
Keyword(s):  
Molecular Markers ◽  
Brassica Juncea ◽  
Rust Resistance ◽  
Indian Mustard ◽  
Resistance Locus ◽  
White Rust ◽  
Pcr Products ◽  
Percent Disease Index ◽  
Different Populations

Singh, B. K., Nandan, D., Supriya, A., Ram, B., Kumar, A., Singh, T., Meena, H. S., Kumar, V., Singh, V. V., Rai, P. K. and Singh, D. 2015. Validation of molecular markers for marker-assisted pyramiding of white rust resistance loci in Indian Mustard (Brassica juncea L.). Can. J. Plant Sci. 95: 939–945. Successful application of molecular markers in marker-assisted pyramiding relies on effective determination of the target phenotype. In this respect, evaluation of the efficiency of markers for marker-assisted selection through cross-validation in different genetic backgrounds and in different populations is a crucial step. In the present study, the previously identified Arabidopsis-derived intron polymorphic (IP) markers At5g41560 and At2g36360, which were highly linked with AcB1-A4.1 and AcB1-A5.1, respectively, were validated in a set of 25 genotypes of Indian Mustard and in three different F2 populations. The relationships between the variation of PCR products of the two markers with the percent disease index (PDI) of the tested genotypes, and the co-segregation analysis of the markers with disease phenotype in F2 populations clearly indicated that At5g41560 and At2g36360 are genotype-nonspecific markers and are closely linked to white rust resistance loci AcB1-A4.1 and AcB1-A5.1, respectively. It also became evident from the present study that AcB1-A4.1 and an another white rust resistance locus Ac(2)t are likely the same gene locus.

Molecular markers linked to white rust resistance in mustard Brassica juncea

1998 ◽  
Vol 97 (5-6) ◽  
pp. 865-870 ◽  
Author(s):  
K. V. Prabhu ◽  
D. J. Somers ◽  
G. Rakow ◽  
R. K. Gugel
Keyword(s):  
Molecular Markers ◽  
Brassica Juncea ◽  
Rust Resistance ◽  
White Rust

scholarly journals Comparing the Resynthesis of Brassica napus L. by Interspecific Somatic and Sexual Hybridization. I. Producing and Identifying Hybrids

1994 ◽  
Vol 119 (4) ◽  
pp. 808-815 ◽  
Author(s):  
Richard H. Ozminkowski ◽  
Pablo Jourdan
Keyword(s):  
Polyethylene Glycol ◽  
Brassica Napus ◽  
Parental Species ◽  
Somatic Hybrids ◽  
Embryo Rescue ◽  
Leaf Tissue ◽  
Brassica Napus L ◽  
Intraspecific Hybridization ◽  
Sexual Hybridization ◽  
Total Dna

Brassica napus (genome aacc), a natural allotetraploid derived from hybridization between B. oleracea L. (genome cc) and B. rapa L. (genome aa), was synthesized by sexual and somatic interspecific hybridizations from the same parent plants to compare the two methods of combining genomes and assess the genetic consequences of bypassing the gametophytic phase before hybrid formation. Highly heterozygous species parents were first produced by intraspecific hybridization between two subspecies each of B. oleracea and B. rapa. Leaf tissue from young plants of both parental species served as a source of protoplasts for fusion; the same plants were later used for crosses. Seventy-two somatic hybrids were produced using a polyethylene glycol-mediated fusion protocol and 27 sexual hybrids were obtained by embryo rescue. Somatic hybrids were produced between one B. oleracea and two sibling B. rapa plants. Sexual hybrids were successfully produced with only one of the two B. rapa siblings. Hybrids were identified by morphology, isozyme patterns, and total DNA content. Although fertile allotetraploid somatic hybrids were obtained within 7 months after seeding parent lines, >1 year was required to produce fertile sexual hybrids.

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