scholarly journals Mapping clubroot resistance of Brassica rapa introgressed into Brassica napus and development of molecular markers for the resistance

Crop Science ◽  
2021 ◽  
Author(s):  
Muhammad Jakir Hasan ◽  
Rubeena Shaikh ◽  
Urmila Basu ◽  
Habibur Rahman
Keyword(s):  
Molecular Markers ◽  
Brassica Napus ◽  
Brassica Rapa ◽  
Clubroot Resistance

Resynthesis of Brassica napus with Brassica oleracea or Brassica rapa Cytoplasm

2010 ◽  
Vol 36 (8) ◽  
pp. 1280-1285 ◽  
Author(s):  
Jun LI ◽  
Li-Xia LUO ◽  
Zhuan WANG ◽  
Jun LI ◽  
Kun-Rong CHEN ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Brassica Oleracea ◽  
Brassica Rapa

scholarly journals Detection of self-incompatible oilseed rape plants (Brassica napus L.) based on molecular markers for identification of the class I S haplotype

2014 ◽  
Vol 37 (3) ◽  
pp. 556-559 ◽  
Author(s):  
Lenka Havlícková ◽  
Eva Jozová ◽  
Miroslav Klíma ◽  
Vratislav Kucera ◽  
Vladislav Curn
Keyword(s):  
Molecular Markers ◽  
Brassica Napus ◽  
Oilseed Rape ◽  
Class I ◽  
Brassica Napus L ◽  
S Haplotype

Fitness of hybrids between rapeseed (Brassica napus) and wild Brassica rapa in natural habitats

2006 ◽  
Vol 15 (4) ◽  
pp. 1175-1184 ◽  
Author(s):  
J. ALLAINGUILLAUME ◽  
M. ALEXANDER ◽  
J. M. BULLOCK ◽  
M. SAUNDERS ◽  
C. J. ALLENDER ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Brassica Rapa ◽  
Natural Habitats

scholarly journals Virulence Spectrum of Single-Spore and Field Isolates of Plasmodiophora brassicae Able to Overcome Resistance in Canola (Brassica napus)

Plant Disease ◽  
2021 ◽  
Vol 105 (1) ◽  
pp. 43-52 ◽  
Author(s):  
Homa Askarian ◽  
Alireza Akhavan ◽  
Victor P. Manolii ◽  
Tiesen Cao ◽  
Sheau-Fang Hwang ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Confidence Interval ◽  
Plasmodiophora Brassicae ◽  
Large Collection ◽  
Single Spore ◽  
Brassica Napus L ◽  
Clubroot Resistance ◽  
Field Isolates ◽  
Virulence Spectrum ◽  
Important Disease

Clubroot, caused by Plasmodiophora brassicae Woronin, is an important disease of canola (Brassica napus L.) that is managed mainly by planting clubroot-resistant (CR) cultivars. Field isolates of P. brassicae can be heterogeneous mixtures of various pathotypes, making assessments of the genetics of host–pathogen interactions challenging. Thirty-four single-spore isolates were obtained from nine field isolates of the pathogen collected from CR canola cultivars. The virulence patterns of the single-spore and field isolates were assessed on the 13 host genotypes of the Canadian Clubroot Differential (CCD) set, which includes the differentials of Williams and Somé et al. Indices of disease (IDs) severity of 25, 33, and 50% (±95% confidence interval) were compared as potential thresholds to distinguish between resistant and susceptible reactions, with an ID of 50% giving the most consistent responses for pathotype classification purposes. With this threshold, 13 pathotypes could be distinguished based on the CCD system, 7 on the differentials of Williams, and 3 on the hosts of Somé et al. The highest correlations were observed among virulence matrices generated using the three threshold IDs on the CCD set. Genetically homogeneous single-spore isolates gave a clearer profile of the P. brassicae pathotype structure. Novel pathotypes, not reported in Canada previously, were identified among the isolates. This large collection of single-spore isolates can serve as a reference in screening and breeding for clubroot resistance.

Identification of molecular markers associated with linoleic acid desaturation in Brassica napus

1998 ◽  
Vol 96 (6-7) ◽  
pp. 897-903 ◽  
Author(s):  
D. J. Somers ◽  
K. R. D. Friesen ◽  
G. Rakow
Keyword(s):  
Molecular Markers ◽  
Linoleic Acid ◽  
Brassica Napus

scholarly journals Larval phenologies and parasitoids of two seed-feeding weevils associated with hoary cress and shepherd's purse (Brassicaceae) in Europe

2011 ◽  
Vol 143 (4) ◽  
pp. 399-410 ◽  
Author(s):  
Franck J. Muller ◽  
Lloyd M. Dosdall ◽  
Peter G. Mason ◽  
Ulrich Kuhlmann
Keyword(s):  
Biological Control ◽  
Brassica Napus ◽  
North America ◽  
Host Specificity ◽  
Brassica Rapa ◽  
Ceutorhynchus Obstrictus ◽  
Hoary Cress ◽  
Cabbage Seedpod Weevil ◽  
Alien Pest ◽  
Host Associations

AbstractIn Europe, Ceutorhynchus turbatus Schultze and Ceutorhynchus typhae (Herbst) (Coleoptera: Curculionidae) feed on seeds from hoary cress and shepherd's purse (Cardaria draba (L.) Desv. and Capsella bursa-pastoris (L.) Medik.); both plants are invasive in North America. In North America, C. turbatus is a candidate for biological control of hoary cress, C. typhae is adventive, and both are sympatric with cabbage seedpod weevil (Ceutorhynchus obstrictus (Marsham)), an invasive alien pest of canola (Brassica napus L. and Brassica rapa L., Brassicaceae). We investigated host associations among C. turbatus, C. typhae, and their parasitoids in Europe. Of particular interest was host specificity of Trichomalus perfectus (Walker) and Mesopolobus morys (Walker) (Hymenoptera: Pteromalidae), candidates for biological control of C. obstrictus in North America. We found no evidence that T. perfectus attacks C. turbatus or C. typhae; however, M. morys was the most common parasitoid associated with C. turbatus.

scholarly journals Agrobacterium-mediated genetic transformation of two varieties of Brassica: optimization of protocol

1970 ◽  
Vol 34 (2) ◽  
pp. 287-301 ◽  
Author(s):  
MMA Khan ◽  
ABMAHK Robin ◽  
MAN Nazim-Ud-Dowla ◽  
SK Talukder ◽  
L Hassan
Keyword(s):  
Brassica Napus ◽  
Agrobacterium Tumefaciens ◽  
Genetic Transformation ◽  
Brassica Rapa ◽  
Binary Vector ◽  
Gus Assay ◽  
Key Words Transformation ◽  
Gus Reporter ◽  
Best Response ◽  
Transformation Experiment

 Two rapeseed varieties, namely Tori-7 and BARI Sarisha-8, respectively, from Brassica rapa and Brassica napus were selected to observe the transformation ability. Petioles were inoculated in Agrobacterium tumefaciens strain LBA 4404 carrying a binary vector pBl2l with GUS (reporter) and nptII (kanamycin resistant) gene. The transformation experiment was performed by optimizing two important factors: preculture time and co-cultivation time and also selected out the best variety. Infection was most effective when explants were pre-cultured for 72 hours (80% GUS positive). and co-cultivated for 72 hours (72% GUS positive). The variety Tori-7 showed the best response to GUS assay (65% GUS positive). Callus induction was the highest in Tori-7, which were 6% with 72 hours of preculture period and 9% in 48 hours of co-cultivation. Number of putative transformed plantlets were highest in Tori-7 (7 plants) followed by BARI Sarisha-8 (3 plants). Key words: Transformation; Brassica; GUS; Agrobacterium. DOI: 10.3329/bjar.v34i2.5802Bangladesh J. Agril. Res. 34(2): 287-301, June 2009

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