Inheritance of a cream petal mutant in Ethiopian mustard

1993 ◽  
Vol 73 (4) ◽  
pp. 1075-1076 ◽  
Author(s):  
A. Getinet ◽  
G. Rakow ◽  
R. K. Downey
Keyword(s):  
Key Words ◽  
Brassica Carinata ◽  
Petal Colour ◽  
Colour Inheritance ◽  
Ethiopian Mustard ◽  
Colour Mutant

The inheritance of a cream petal colour mutant in Ethiopian mustard (Brassica carinata A. Braun) was studied in backcross and F2 generations of a cross between a cream-petalled mutant and a normal yellow-petalled cultivar. The cream petal characteristic was controlled by one pair of recessive alleles. Key words: Brassica carinata, petal colour, inheritance

Repression of seed coat pigmentation in Ethiopian mustard

1997 ◽  
Vol 77 (4) ◽  
pp. 501-505 ◽  
Author(s):  
A. Getinet ◽  
G. Rakow
Keyword(s):  
Seed Coat ◽  
Brassica Species ◽  
Brassica Carinata ◽  
Seed Colour ◽  
Pigment Synthesis ◽  
Yellow Seed ◽  
Repressor Gene ◽  
Colour Inheritance ◽  
Ethiopian Mustard ◽  
Light Yellow

The inheritance of seed colour in Brassica carinata A. Braun was investigated in backcross and F2 generations derived from two crosses between the brown seeded cultivar S-67 and two, true breeding, yellow seeded lines, PGRC/E 21164 and PGRC/E 21224 of the Plant Gene Resources Centre of Ethiopia. F1 seed was identical in colour to self-pollinated seed borne on the respective brown and yellow seeded parents indicating maternal control of seed colour in B. carinata. F1 plants of reciprocal crosses produced yellow seed that was somewhat darker than that of the yellow-seeded parent indicating incomplete dominance of yellow over brown. Backcross F1 plants, derived from the backcross to the brown parent, segregated brown and light yellow-brown/yellow seeded plants in a 1:1 ratio, while backcrosses to both yellow seeded parents produced only light yellow-brown/yellow seeded plants. The F2 generation segregated brown and light yellow-brown/yellow seeded plants in a 1:3 ratio. These results are in contrast to seed colour inheritance pattern observed in other Brassica species, where brown seed colour was fully or partially dominant over yellow. The apparent dominance of the absence of a gene product in yellow seed over its presence in brown seed, was explained by the presence of a dominant repressor gene (Rp) in yellow seed which inhibits the expression of seed coat pigment synthesis genes. The repressor gene is absent in brown seeded plants. The significance of this finding in relation to the development of yellow seeded lines in other Brassica species is discussed. Key words: Brassica carinata, seed colour inheritance, repressor

scholarly journals Genetics and Molecular Mapping of Black Rot Resistance Locus Xca1bc on Chromosome B-7 in Ethiopian Mustard (Brassica carinata A. Braun)

PLoS ONE ◽  
2016 ◽  
Vol 11 (3) ◽  
pp. e0152290 ◽  
Author(s):  
Brij Bihari Sharma ◽  
Pritam Kalia ◽  
Devendra Kumar Yadava ◽  
Dinesh Singh ◽  
Tilak Raj Sharma
Keyword(s):  
Molecular Mapping ◽  
Brassica Carinata ◽  
Black Rot ◽  
Resistance Locus ◽  
Ethiopian Mustard

scholarly journals The last missing piece of the Triangle of U: the evolution of the tetraploid Brassica carinata genome

2022 ◽  
Author(s):  
Won Cheol Yim ◽  
Mia L. Swain ◽  
Dongna Ma ◽  
Hong An ◽  
Kevin A Bird ◽  
...  
Keyword(s):  
Agronomic Traits ◽  
Diploid Species ◽  
Gene Families ◽  
Brassica Carinata ◽  
Marginal Lands ◽  
Polyploid Evolution ◽  
Ethiopian Mustard ◽  
Biodiesel Feedstock ◽  
Brassica Spp

Ethiopian mustard (Brassica carinata) is an ancient crop with significant potential for expanded cultivation as a biodiesel feedstock. The remarkable stress resilience of B. carinata and desirable seed fatty acid profile addresses the ongoing food vs. fuel debate as the crop is productive on marginal lands otherwise not suitable for even closely related species. B. carinata is one of six key Brassica spp. that share three major genomes: three diploid species (AA, BB, CC) that spontaneously hybridized in a pairwise manner, forming three allotetraploid species (AABB, AACC, and BBCC). Each of these genomes has been researched extensively, except for that of B. carinata. In the present study, we report a high-quality, 1.31 Gbp genome with 156.9-fold sequencing coverage for B. carinata var. Gomenzer, completing and confirming the classic Triangle of U, a theory of the evolutionary relationships among these six species that arose almost a century ago. Our assembly provides insights into the genomic features that give rise to B. carinata's superior agronomic traits for developing more climate-resilient Brassica crops with excellent oil production. Notably, we identified an expansion of transcription factor networks and agronomically-important gene families. Completing the Triangle of U comparative genomics platform allowed us to examine the dynamics of polyploid evolution and the role of subgenome dominance in domestication and agronomical improvement.

scholarly journals Brassica carinata genome characterization clarifies U’s triangle model of evolution and polyploidy in Brassica

2021 ◽  
Author(s):  
Xiaoming Song ◽  
Yanping Wei ◽  
Dong Xiao ◽  
Ke Gong ◽  
Pengchuan Sun ◽  
...  
Keyword(s):  
Genome Sequencing ◽  
Agronomic Traits ◽  
Repetitive Sequences ◽  
Genomic Analysis ◽  
Brassica Species ◽  
Brassica Carinata ◽  
Comparative Genomic ◽  
Ethiopian Mustard ◽  
A Genome ◽  
Genome Triplication

Abstract Ethiopian mustard (Brassica carinata) in the Brassicaceae family possesses many excellent agronomic traits. Here, the high-quality genome sequence of B. carinata is reported. Characterization revealed a genome anchored to 17 chromosomes with a total length of 1.087 Gb and an N50 scaffold length of 60 Mb. Repetitive sequences account for approximately 634 Mb or 58.34% of the B. carinata genome. Notably, 51.91% of 97,149 genes are confined to the terminal 20% of chromosomes as a result of the expansion of repeats in pericentromeric regions. Brassica carinata shares one whole-genome triplication event with the five other species in U’s triangle, a classic model of evolution and polyploidy in Brassica. Brassica carinata was deduced to have formed ∼0.047 Mya, which is slightly earlier than B. napus but later than B. juncea. Our analysis indicated that the relationship between the two subgenomes (BcaB and BcaC) is greater than that between other two tetraploid subgenomes (BjuB and BnaC) and their respective diploid parents. RNA-seq datasets and comparative genomic analysis were used to identify several key genes in pathways regulating disease resistance and glucosinolate metabolism. Further analyses revealed that genome triplication and tandem duplication played important roles in the expansion of those genes in Brassica species. With the genome sequencing of B. carinata completed, the genomes of all six Brassica species in U’s triangle are now resolved. The data obtained from genome sequencing, transcriptome analysis, and comparative genomic efforts in this study provide valuable insights into the genome evolution of the six Brassica species in U’s triangle.

scholarly journals Variation in Plant Morphology and Sinigrin Content in Ethiopian Mustard (Brassica carinata L.)

2019 ◽  
Vol 5 (5) ◽  
pp. 205-212 ◽  
Author(s):  
Tesfay Teklehaymanot ◽  
Haijing Wang ◽  
Jianli Liang ◽  
Jian Wu ◽  
Runmao Lin ◽  
...  
Keyword(s):  
Plant Morphology ◽  
Brassica Carinata ◽  
Ethiopian Mustard
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