Inheritance of Seed Coat Color in <i>Brassica campestris</i> L. Variety Toria<sup>1</sup>

Ahmed, S. U.; Zuberi, M. I.

doi:10.2135/cropsci1971.0011183x001100020047x

Cited by 29 publications

(16 citation statements)

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“…In B. campestris (AA), the present results were in support of a single gene controlling seed colour although a distorted segregation pattern was observed in some generations (Table 1). Cases with one, two or three genes governing the inheritance of seed colour have been also reported in this species (Mohammad et al, 1942;Ahmed & Zuberi, 1971;J6nsson, 1975;Stringam, 1980;Hawk, 1982;Schwetka, 1982). In B. juncea (AABB), it is generally found that the black or brown seed colour was governed by two independent dominant genes with duplicated effect (Vera et al, 1979;Vera & Woods, 1982;Anand et al, 1985;Chauhan & Kumar, 1987).…”

Section: Genetics Of Seed Colour In Brassica and Breeding For Yellow-mentioning

confidence: 81%

“…Schwetka (1982) supports the paternal influence of seed colour whereas other researchers either do not mention this problem or deny it (Mohammad et al, 1942;Ahmed & Zuberi, 1971;Stringam, 1980;Shirzadegan, 1986). Our results support the idea that seed colour is mainly controlled by the maternal genotype but influenced by the interplay between the maternal and endosperm and/or embryonic genotypes.…”

Section: Influence Of Embryonic Genotype On Seed Colourmentioning

confidence: 96%

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Inheritance of seed colour in Brassica campestris L. and breeding for yellow-seeded B. napus L.

Chen

Heneen

1992

Euphytica

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Seed colour inheritance was studied in five yellow-seeded and one black-seeded B. campestris accessions. Diallel crosses between the yellow-seeded types indicated that the four var. yellow sarson accessions of Indian origin had the same genotype for seed colour but were different from the Swedish yellow-seeded breeding line. Black seed colour was dominant over yellow. The segregation patterns for seed colour in F2 (including reciprocals) and BCI (backcross of F1 to the yellow-seeded parent) indicated that the black seed colour was conditioned by a single dominant gene. Seed colour was mainly controlled by the maternal genotype but influenced by the interplay between the maternal and endosperm and/or embryonic genotypes. For developing yellow-seeded B. napus genotypes, resynthesized B. napus lines containing genes for yellow seed (Chen et al., 1988) were crossed with B. napus of yellow/brown seeds, or with yellow-seeded B. carinata. Yellow-seeded F2 plants were found in the crosses that involved the B. napus breeding line. However, this yellow-seeded character did not breed true up to F 4. Crosses between a yellow-seeded F 3 plant and a monogenomically controlled black-seeded B. napus line of resynthesized origin revealed that the black-seeded trait in the B. alboglabra genome was possibly governed by two independently dominant genes with duplicated effect. Crossability between the resynthesized B. napus lines as female and B. carinata as male was fairly high. The sterility of the F1 plants prevented further breeding progress for developing yellow-seeded B. napus by this strategy.

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Section: Genetics Of Seed Colour In Brassica and Breeding For Yellow-mentioning

confidence: 81%

Section: Influence Of Embryonic Genotype On Seed Colourmentioning

confidence: 96%

Inheritance of seed colour in Brassica campestris L. and breeding for yellow-seeded B. napus L.

Chen

Heneen

1992

Euphytica

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“…Single gene control of seed colour with brown completely dominant over yellow was found in crosses that involved two reddish-brown toria lines and two yellow sarson lines (Ahmed and Zuberi 1971). Similarly, Hawk (1982) and Chen and Heneen (1992) also reported dominant single gene control of brown seed colour in annual oilseed B. rapa types in crosses with yellow sarson.…”

mentioning

confidence: 76%

Repression of seed coat pigmentation in Ethiopian mustard

Getinet¹,

Rakow²

1997

Can. J. Plant Sci.

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Getinet, A. and Rakow, G. 1997. Repression of seed coat pigmentation in Ethiopian mustard. Can. J. Plant Sci. 77: 501-505. The inheritance of seed colour in Brassica carinata A. Braun was investigated in backcross and F 2 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. F 1 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. F 1 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 F 1 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 F 2 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, repressorGetinet, A. et Rakow, G. 1997. Inhibition de la pigmentation du tégument séminal chez la moutarde d'Éthiopie. Can. J. Plant Sci. 77: 501-505. Nous avons examiné le mode de transmission héréditaire de la coloration de la graine de Brassica carinata A. Braun dans des rétrocroisements et des générations F 2 issus de deux croisements entre le cultivar à graine brune S-67 et deux lignées homozygotes à graine jaune PGRC/E 21164 et PGRC/E 21224. Ces travaux étaient réalisés au Centre de ressources phytogénétiques de l'Éthiopie. Les graines F 1 avaient la même coloration que les graines obtenues par autopollinisation, portées par les parents respectifs à graines brunes et à graines jaunes, laissant penser à une régulation maternelle de la couleur des graines chez cette espèce. Le jaune des graines produites par les F 1 de croisements réciproques était quelque peu plus foncé que celui des graines du parent à graine jaune, ce qui suggérerait une dominance incomplète du jaune sur le brun. Les plantes F 1 dérivées du rétro-croisement au parent à graines brunes produisaient des descendances à graines brunes et à graines brun-jaune pâle/jaune dans la proportion 1:1, alors que dans le rétrocroisement aux deux parents à graine jaune les F 1 ne produisaient que des graines brun-jaune pâ...

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“…In B. rapa, Ahmed and Zuberi (1971) reported that a single gene is responsible for the dominant brown seed color of the Indian 'Toria' lines over the yellow-seeded 'Yellow Sarson' lines. But Stringam (1980) found that brown seed color trait was determined by two independent dominant genes in B. rapa.…”

Section: Introductionmentioning

confidence: 99%

Map-based cloning and characterization of a gene controlling hairiness and seed coat color traits in Brassica rapa

et al. 2008

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A glabrous, yellow-seeded doubled haploid (DH) line and a hairy, black-seeded DH line in Chinese cabbage (B. rapa) were used as parents to develop a DH line population that segregated for both hairiness and seed coat color traits. The data showed that both traits completely co-segregated each other, suggesting that one Mendelian locus controlled both hairiness and seed coat color in this population. A fine genetic map was constructed and a SNP marker that was located inside a Brassica ortholog of TRANSPARENT TESTA GLABRA 1 (TTG1) in Arabidopsis showed complete linkage to both the hairiness and seed coat color gene, suggesting that the Brassica TTG1 ortholog shared the same gene function as its Arabidopsis counterpart. Further sequence analysis of the alleles from hairless, yellow-seeded and hairy, black-seeded DH lines in B. rapa showed that a 94-base deletion was found in the hairless, yellow-seeded DH lines. A nonfunctional truncated protein in the hairless, yellow-seeded DH lines in B. rapa was suggested by the coding sequence of the TTG1 ortholog. Both of the TTG1 homologs from the black and yellow seeded B. rapa lines were used to transform an Arabidopsis ttg1 mutant and the results showed that the TTG1 homolog from the black seeded B. rapa recovered the Arabidopsis ttg1 mutant, while the yellow seeded homolog did not, suggesting that the deletion in the Brassica TTG1 homolog had led to the yellow seeded natural mutant. This was the first identified gene in Brassica species that simultaneously controlled both hairiness and seed coat color traits.

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Inheritance of Seed Coat Color in Brassica campestris L. Variety Toria¹

Cited by 29 publications

References 0 publications

Inheritance of seed colour in Brassica campestris L. and breeding for yellow-seeded B. napus L.

Inheritance of seed colour in Brassica campestris L. and breeding for yellow-seeded B. napus L.

Repression of seed coat pigmentation in Ethiopian mustard

Map-based cloning and characterization of a gene controlling hairiness and seed coat color traits in Brassica rapa

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Inheritance of Seed Coat Color in Brassica campestris L. Variety Toria1

Cited by 29 publications

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Inheritance of seed colour in Brassica campestris L. and breeding for yellow-seeded B. napus L.

Inheritance of seed colour in Brassica campestris L. and breeding for yellow-seeded B. napus L.

Repression of seed coat pigmentation in Ethiopian mustard

Map-based cloning and characterization of a gene controlling hairiness and seed coat color traits in Brassica rapa

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Inheritance of Seed Coat Color in Brassica campestris L. Variety Toria¹