Die Entwicklung des Anbaues und der Züchtung von Ölpflanzen in Mitteleuropa I

Schuster, W.

doi:10.1002/lipi.19870890105

Cited by 4 publications

(3 citation statements)

References 16 publications

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“…This underlines previous suggestions (e.g. Röbbelen and Nitsch 1975, Thompson 1983, Schuster 1987 that B. napus genotypes containing high levels of erucic acid and GSL represent a comparatively genetically divergent source of germplasm for hybrid breeding.…”

Section: Discussionsupporting

confidence: 87%

“…This severely hinders the generation of genetically diverse germplasm pools for hybrid development. On the other hand, B. napus genotypes containing high levels of erucic acid (C22:1) and seed glucosinolates (++ quality) represent a comparatively genetically divergent source of germplasm for hybrid breeding (Röbbelen and Nitsch 1975, Thompson 1983, Schuster 1987, and novel B. napus genotypes with ++ quality can also be resynthesised from interspecific crosses between the two diploid ancestors of B. napus, namely Brassica rapa (A genome, 2n = 20) and B. oleracea (C genome, 2n = 18). Oilseed rape F1-hybrids generated from crosses between resynthesised rapeseed and elite breeding lines can exhibit high levels of yield heterosis .…”

Section: Introductionmentioning

confidence: 99%

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New Oilseed Rape (<i>Brassica napus</i>) Hybrids with High Levels of Heterosis for Seed Yield under Nutrient-poor Conditions

et al. 2007

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Winter oilseed rape (Brassica napus L.) is the most important oil crop in Europe. Due to a continually increasing demand for rapeseed oil for food and non-food uses, the production of hybrid cultivars with higher seed and oil yields has become increasingly important in recent years. However, the systematic use of heterosis for hybrid breeding in oilseed rape is limited by the relatively narrow genetic basis of adapted germplasm, which can impede the generation of distinct heterotic pools. In the present study experimental hybrids were developed from a population of 190 DH lines derived from a cross between an elite, double-low seed quality (zero erucic acid, low glucosinolate content) winter oilseed rape variety and a semi-synthetic line derived from a genetically diverse resynthesised rapeseed line with high erucic acid and glucosinolate contents. The DH lines were crossed with a male sterile tester and the resulting test hybrids were examined for yield performance at two locations in Hesse, Germany, that exhibit extreme differences in climatic conditions and soil characteristics. Mid-parent heterosis for seed yield was determined at both the agronomically optimal location Rauischholzhausen and the marginal site Niederhörlen. A value of up to 43% mid-parent heterosis for seed yield could be observed among selected test hybrids compared to that of their parental DH lines. The heterosis level for yield was particularly high at the nutrient-poor site, where the best test hybrids showed significantly higher yields than elite open-pollinating and hybrid varieties. This demonstrates the suitability and adaptability of highly heterotic rapeseed hybrids on marginal locations and suggests the existence of a strong heterotic effect on nutrient uptake efficiency.

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Section: Discussionsupporting

confidence: 87%

Section: Introductionmentioning

confidence: 99%

New Oilseed Rape (<i>Brassica napus</i>) Hybrids with High Levels of Heterosis for Seed Yield under Nutrient-poor Conditions

et al. 2007

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“…2006), and genetically diverse heterotic pools of adapted genotypes are difficult to develop. On the other hand, B. napus genotypes containing high levels of erucic acid (C22:1) and seed glucosinolates (so‐called ++ quality) represent a comparatively genetically divergent source of germplasm for hybrid breeding (Röbbelen 1975, Thompson 1983, Schuster 1987); however, the introgression of novel genetic diversity from ++ rapeseed normally requires extensive backcrossing to eliminate all unwanted alleles contributing to high seed erucic acid and glucosinolate contents. With each recurrent backcross the genomic contribution of the genetically diverse ++ parent is reduced, and with it the proportion of novel alleles that can potentially contribute to heterosis in hybrids derived from such lines.…”

mentioning

confidence: 99%

Marker‐assisted increase of genetic diversity in a double‐low seed quality winter oilseed rape genetic background

et al. 2007

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Generation of novel genetic diversity for maximization of heterosis in hybrid production is a significant goal in winter oilseed rape breeding. Here, we demonstrate that doubled haploid (DH) production using microspore cultivation can simultaneously introgress favourable alleles for double-low seed quality (low erucic acid and low-glucosinolate content) into a genetically diverse Brassica napus genetic background. The DH lines were derived from a cross between a double-low quality winter rapeseed variety and a genetically diverse semisynthetic B. napus line with high erucic acid and high glucosinolates (++ quality). Twenty-three low-glucosinolate lines were identified with a genome component of 50-67% derived from the ++ parent. Four of these lines, with a genome component of 50-55% derived from the ++ parent, also contained low erucic acid. Heterosis for seed yield was confirmed in test-crosses using these genetically diverse lines as pollinator. The results demonstrate the potential of marker-assisted identification of novel genetic pools for breeding of double-low quality winter oilseed rape hybrids.

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Zum Einfluß genetischer Merkmale und umweltspezifischer Faktoren auf die Zusammensetzung von Sojabohnen

Mieth

Krausse

Erhardt

et al. 1988

Nahrung

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Es werden vergleichende Untersuchungen zur Zusammensetzung der Basiskomponenten und wertbestimmender Inhaltsstoffe von ausgewahlten Sojabohnen-Sorten aus dem Weltsortiment (9 Genotypen) und von Dornburger-Neuziichtungen (4 Mutationsstamme) durchgefiihrt. Dabei wird auch auf den EinfluD von Umweltfaktoren (3 Anbaugebiete, 9 Impfversuche) eingegangen. Die Ergebnisse werden unter ernlhrungsphysiologischen, anwendungstechnischen und ziichterischen Aspekten diskutiert. EinfGhrung und Zielstellung

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Die Entwicklung des Anbaues und der Züchtung von Ölpflanzen in Mitteleuropa I

Cited by 4 publications

References 16 publications

New Oilseed Rape (<i>Brassica napus</i>) Hybrids with High Levels of Heterosis for Seed Yield under Nutrient-poor Conditions

New Oilseed Rape (<i>Brassica napus</i>) Hybrids with High Levels of Heterosis for Seed Yield under Nutrient-poor Conditions

Marker‐assisted increase of genetic diversity in a double‐low seed quality winter oilseed rape genetic background

Zum Einfluß genetischer Merkmale und umweltspezifischer Faktoren auf die Zusammensetzung von Sojabohnen

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