INHERITANCE OF THE MAJOR GLUCOSINOLATES OF RAPESEED (<i>BRASSICA NAPUS</i>) MEAL

Kondra, Z. P.; Stefansson, B. R.

doi:10.4141/cjps70-122

Cited by 97 publications

(43 citation statements)

References 5 publications

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“…Control of seed glucosinolates by the maternal genotype has been reported previously (e.g. Brassica napus, 15,18). Such data indicate that biosynthesis of leaf glucosinolates is dependent on enzymes encoded by the zygotic genome, whereas the biosynthesis of seed glucosinolate is dependent on enzymes encoded by the maternal genome.…”

Section: Time (Minutes)mentioning

confidence: 60%

Biochemical Genetics of Plant Secondary Metabolites in Arabidopsis thaliana

Haughn¹,

Davin²,

Giblin³

et al. 1991

Plant Physiol.

156

123

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Mutants of Arabidopsis thaliana with a glucosinolate content different from wild type were isolated by screening a mutagenized population of plants. Six mutants were detected out of a population of 1200 screened. One of these mutants, TUI, was analyzed in detail. Leaf and seed tissues of line TUl lack or have reduced amounts of many of the aliphatic glucosinolates found in the wild type due to a recessive allele, gsml, of a single nuclear gene, GSM1. The seed phenotype is inherited as a maternal effect suggesting that the embryo is dependent on the maternal tissue for its glucosinolates. Experiments involving feeding of "4C-labeled intermediates suggested that the gsml allele results in a metabolic block which decreases the availability of several amino acid substrates required for glucosinolate biosynthesis: 2-amino-6-methylthiohexanoic acid, 2-amino-7-methylthioheptanoic acid, and 2-amino-8-methylthiooctanoic acid. The mutation does not result in any obvious changes in morphology or growth rate. A pathway for the biosynthesis of glucosinolates in A. thaliana is proposed.Glucosinolates are anionic thioglucosides (Fig. 1) synthesized by many species of the order Capparales including all the Brassicaceae (for reviews see refs. 6 and 26). The primary biological function of glucosinolates is unknown, although a role in plant defense against bacterial and fungal pathogens and insect predators has been suggested (reviewed by Fenwick et al. [6]).The presence of glucosinolates in crop species has several important consequences. First, dietary problems in livestock can result when fodder with high levels of glucosinolates are consumed. Thus, glucosinolates severely restrict the amount of glucosinolate-containing meal that can be used in animal feed supplements (24). Second, the distinctive flavor associated with Brassicaceae species which serve as vegetable and

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Section: Time (Minutes)mentioning

confidence: 60%

Biochemical Genetics of Plant Secondary Metabolites in Arabidopsis thaliana

Haughn¹,

Davin²,

Giblin³

et al. 1991

Plant Physiol.

156

123

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“…The erucic acid content depends on the embryo genotype, but not the female parent, and is controlled by additive effects of two pairs of genes (Jonsson 1977;Chen and Beversdorf 1990;Qi et al 2001), whereas glucosinolate content is controlled by the maternal genotype (Kondra and Stefasom 1970;Mou and Liu 1990;Zhang et al 2004). However, until now there is no recognized model for the genetics of oil content in B. napus.…”

Section: Introductionmentioning

confidence: 96%

Genetic analysis on oil content in rapeseed (Brassica napus L.)

et al. 2009

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High oil content is one of the most important characteristics of rapeseed (Brassica napus L.) breeding. In order to understand the genetic basis of seed oil content, a series of reciprocal crosses between rapeseed parents with high oil content (53110, 61616 and 6F313), medium-oil content (Zhongshuang 9) and low oil content (51070 and 93275) were conducted. It was found that the oil content of F 1 hybrid seeds in rapeseed was mainly controlled by the maternal genotype. The maternal effect value of oil content was estimated to be 0.86. The pollen parent had a xenia effect on oil content, estimated to be 0.14 which changed the mean value by 1.86 percent. The inheritance of oil content was studied in a set of 8 9 8 diallel crosses of different varieties. The results indicated that the inheritance of oil content could be explained by an additivedominant-epistasis model. Although the dominant and additive effects played major roles and accounted for more than 70% of the total variance, there was also a small epistatic effect. The broad and narrow sense heritability of oil content was 83.88 and 36.94%, respectively. Based on the oil content differences between the reciprocal crosses in the same offspring generation (F 1 and F 2 ) in rapeseed, it could be concluded that there were significant cytoplasmic effects on oil content. In this study, two lines with significantly cytoplasmic effects, either positive or negative, were selected.

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“…Erucic acid concentration, controlled by two genes with additive alleles at both loci, has high heritability (Harvey and Downey 1964;Kondra and Stefansson 1965) and glucosinolate concentration, controlled by three dominant-recessive genes, also has high heritability (Kondra and Stefansson 1970;Friedt and Lu¨hs 1998). This suggests that environmental differences between the greenhouse and the field may not be particularly important factors affecting seed quality differences between these two environments.…”

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confidence: 80%

Relationship of seed quality traits for greenhouse-grown versus field-grown high erucic acid rapesseed: Is seed quality trait selection for greenhouse-grown seed worthwhile?

Bahrani¹,

McVetty²

2008

Can. J. Plant Sci.

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Bahrani, J. and McVetty, P. B. E. 2008. Relationship of seed quality traits for greenhouse-grown versus field-grown high erucic acid rapeseed: Is seed quality trait selection for greenhouse-grown seed worthwhile? Can. J. Plant Sci. 88: 419{423. A study of the relationship of seed quality traits for greenhouse-grown and field-grown seed samples was conducted. Early generation high erucic acid rapeseed (HEAR) cross progeny were grown in the greenhouse, selfed and then the selfed seeds were grown in the field at the University of Manitoba. The oil, protein, erucic acid and glucosinolate concentrations of greenhouse-grown versus field-grown seed samples were compared. There were differences (P50.01) between the means of all seed quality traits for greenhouse-grown versus field-grown seed samples. The mean oil, protein and erucic acid concentrations of field-grown seed samples were higher than for greenhouse-grown seed samples. In contrast, the mean glucosinolate concentration of greenhouse-grown seed samples was higher than for field-grown seed samples. Rank correlations between greenhouse-grown seed samples and field-grown seed samples for all seed quality traits were significant but moderate in magnitude. Selection for oil, protein, erucic acid and glucosinolate concentration in greenhouse-grown seed samples dramatically increased the number of high seed quality F 4 families in the field and was successful for all seed quality traits. It is concluded that seed quality selection in greenhouse-grown seed samples is worthwhile and that this procedure could lead to greater efficiencies in Brassica plant breeding programs.Key words: Rapeseed (Brassica napus L.), oil, protein, erucic acid, glucosinolates Bahrani, J. et McVetty, P. B. E. 2008. Liens entre les parame`tres de la qualite´grainie`re du colza a`haute teneur en acide e´rucique cultive´en serre ou au champ : vaut-il la peine de se´lectionner les semences re´colte´es en serre en fonction de leur qualite´? Can. J. Plant Sci. 88: 419Á423. Les auteurs se sont inte´resse´s aux liens existant entre les parame`tres de la qualite´des graines de colza re´colte´es en serre ou au champ. À cette fin, ils ont cultive´les hybrides d'une des premie`res ge´ne´rations de colza a`haute teneur en acide e´rucique en serre, re´colte´les graines de la S1 puis cultive´ces dernie`res en pleine terre, al 'Universite´du Manitoba. Ensuite, ils ont compare´la concentration d'huile, de prote´ines, d'acide e´rucique et de glucosinolates des semences re´colte´es en serre et au champ. La moyenne des deux e´chantillons varie (P50,01) pour tous les parame`tres de la qualite´grainie`re. Les e´chantillons pre´leve´s au champ avaient une plus forte concentration moyenne d'huile, de prote´ines et d'acide e´rucique que les e´chantillons recueillis en serre qui, en revanche, e´taient plus riches en glucosinolates. Apre`s classement, les corre´lations entre le rang des semences re´colte´es en serre et celles re´colte´es au champ s'ave`rent significatives pour tous les parame`tres de la qualite´, mais ...

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INHERITANCE OF THE MAJOR GLUCOSINOLATES OF RAPESEED (BRASSICA NAPUS) MEAL

Abstract: ABSTRACT

Cited by 97 publications

References 5 publications

Biochemical Genetics of Plant Secondary Metabolites in Arabidopsis thaliana

Biochemical Genetics of Plant Secondary Metabolites in Arabidopsis thaliana

Genetic analysis on oil content in rapeseed (Brassica napus L.)

Relationship of seed quality traits for greenhouse-grown versus field-grown high erucic acid rapesseed: Is seed quality trait selection for greenhouse-grown seed worthwhile?

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