HETEROSIS IN SUMMER RAPE (<i>Brassica napus</i> L.)

Sernyk, J. L.; Stefansson, B. R.

doi:10.4141/cjps83-046

Cited by 107 publications

(78 citation statements)

References 9 publications

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“…In this study, HEAR hybrids displayed significant growth vigor compared with their parents, with hybrids having higher growth vigor displaying higher high parent heterosis for seed yield. Sernyk and Stefansson (1983) and Brandle and McVetty (1989) also observed higher seedling vigor for canola hybrids compared with their parents. The more genetically divergent hybrids from among geographical group (UM )EU) crosses were much more vigorous than the less genetically divergent hybrids from within geographical group (UM )UM or EU )EU) crosses, confirming the reports of Sernyk and Stefansson (1983), Lefort-Buson et al (1986), Lefort-Buson et al (1987) and Brandle and McVetty (1989).…”

Section: Discussionmentioning

confidence: 90%

“…Spring habit canola-quality oilseed rape hybrids have been shown to out yield open-pollinated populations cultivars by as much as 60% (Sernyk and Stefansson 1983), 72% (Grant and Beversdorf 1985) and 20% (Brandle and McVetty 1989) due to heterosis. Winter habit canola )rapeseed hybrids have also been reported to out yield open-pollinated population cultivars by up to 15% (Lefort-Buson et al 1987).…”

mentioning

confidence: 99%

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Assessment of agronomic performance and heterosis for agronomic traits in hybrid high erucic acid rapeseed (HEAR)

Cuthbert¹,

Crow²,

McVetty³

2009

Can. J. Plant Sci.

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. 2009. Assessment of agronomic performance and heterosis for agronomic traits in hybrid high erucic acid rapeseed (HEAR). Can. J. Plant Sci. 89: 227Á237. Twelve genetically diverse and geographically distinct high erucic acid rapeseed (HEAR) Brassica napus L. cultivars/lines were selected and crossed by hand emasculation in a topcross design to produce 45 F 1 hybrid combinations. Seven of the twelve parents were HEAR cultivars/lines developed by the University of Manitoba (UM) and the remaining five parents were proprietary European (EU) HEAR cultivars/lines. Adequate seed was produced to evaluate the hybrids and parents in replicated yield trials in six environments in Manitoba during 2004 and 2005. Vigor, days to first flower, days to maturity, lodging, plant height, and seed yield were assessed. The hybrids were generally more vigorous, taller and more lodging resistant than their parents with similar days to first flower and days to maturity as their earlier parents. The best hybrids in this study displayed high parent heterosis for seed yield of up to 143% and commercial heterosis for seed yield of up to 99%. These hybrids were from the most genetically diverse UM)EU crosses. HEAR hybrids appear very promising approach to increase seed yields in this crop.

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Section: Discussionmentioning

confidence: 90%

mentioning

confidence: 99%

Assessment of agronomic performance and heterosis for agronomic traits in hybrid high erucic acid rapeseed (HEAR)

Cuthbert¹,

Crow²,

McVetty³

2009

Can. J. Plant Sci.

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“…Screening of 10 hybrid lines revealed that the protein content in hybrid lines ranged from 20.58 % to 25.15 %, while parental forms had a protein content of 18.41 % and 20.13 %. Sernyk and Stefansson (1983) found that seed oil concentration and seed protein concentration in canola were strongly negatively correlated.…”

Section: Discussionmentioning

confidence: 96%

“…In contrast, the first generation of these hybrids was intermediate, which is consistent with common observations (Mohanty et al 2009). Grant and Beversdorf (1985) reported that high parent heterosis for oil concentration did not occur in their canola hybrids, while Sernyk and Stefansson (1983) observed that their canola hybrids performed well, but did not exceed the oil concentration of the parents. Similar results to those of Sernyk and Stefansson (1983) were obtained in this study.…”

Section: Discussionmentioning

confidence: 99%

“…Grant and Beversdorf (1985) reported that high parent heterosis for oil concentration did not occur in their canola hybrids, while Sernyk and Stefansson (1983) observed that their canola hybrids performed well, but did not exceed the oil concentration of the parents. Similar results to those of Sernyk and Stefansson (1983) were obtained in this study. There were visible differences in oil content between tested hybrid lines and parents and among hybrid lines, so contrast lines with high and low rates could be selected.…”

Section: Discussionmentioning

confidence: 99%

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Chinese cabbage (Brassica rapa ssp. pekinensis) – a valuable source of resistance to clubroot (Plasmodiophora brassicae)

et al. 2016

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Clubroot, caused by the protozoan parasite Plasmodiophora brassicae Woronin, is one of the most damaging diseases of Brassica napus worldwide. Resistant plant material is valuable for cultivation in all areas of high incidence of the disease and intensive growth of oilseed rape. We have evaluated clubroot resistance, plant morphology and seed quality in 15 lines of an F 4 generation and selected six lines of F 5 generation of interspecific hybrids obtained from a cross between a male sterile line of B. napus 'MS8', selected from resynthesized oilseed rape (B. rapa ssp. chinensis × B. oleracea var. gemmifera) and an ecotype of B. rapa ssp. pekinensis. Clubroot resistance was evaluated using a bioassay with P 1 -P 5 pathotypes of P. brassicae (according to the classification of Somé et al. 1996). The resistance to the pathotype P 1 was successfully fixed in the F 5 generation, and improved in some lines in respect to the pathotypes P 2 -P 4 . The resistance to P 1 and the other tested pathotypes was not linked. Characterization of plant material included recent techniques of FISH and BAC-FISH with a special focus on the analysis of ribosomal DNA (rDNA) of selected individuals. Two hybrid lines combined high levels of resistance with appropriate plant morphology, good seed quality traits and a stable chromosome number and arrangement. Recent techniques of 'chromosome painting' provided good insight into chromosome organization in the hybrids obtained, and offered opportunities of further improvement of the breeding process.

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NDOLA‐2, a high‐yielding, open‐pollinated conventional spring type canola in North Dakota

Rahman

Mendoza

Anderson

et al. 2021

J of Plant Registrations

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NDOLA-2 (Reg. no. PI 698655) is an open-pollinated, non-genetically modified, spring-type canola (Brassica napus L.) developed at North Dakota State University (NDSU) and approved for specialty release by the North Dakota Agricultural Experiment Station. NDOLA-2 was tested as experimental line NDC-E16198 from 2017 to 2020 (16 location-years) in NDSU canola breeding nurseries and in 2019 and 2020 (8 location-years) in North Dakota Canola Variety Trials (ND-CVTs). NDOLA-2 has been identified as a germplasm with higher seed yield potential and disease tolerance. NDOLA-2 had 5.5% higher seed yield and 2.1% lower oil contents compared with those of commercial hybrid checks in NDSU canola breeding trials. Also, NDOLA-2 had 5.4% higher seed yield and 1.6% lower oil content over the means of commercial cultivars/hybrids in ND-CVTs. It has been identified as resistant to blackleg disease (Pathogenicity Group 4) and Sclerotinia stem rot disease of canola.NDOLA-2 flowers within 44 d from seeding, has a flowering period that lasts 22 d, and reaches maturity within 93 d from seeding with plants that are 103 cm tall. It is resistant to lodging, with a score of 2.1 out of 9, and has an overall breeder score of 8.0, where the trial mean score for all locations was 7.7. INTRODUCTIONRapeseed/canola (Brassica napus L., AACC, 2n = 4x = 38), is a recent allopolyploid of polyphyletic origin that evolvedAbbreviations: GMO, genetically modified organism; ND-CVT, North

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HETEROSIS IN SUMMER RAPE (Brassica napus L.)

Cited by 107 publications

References 9 publications

Assessment of agronomic performance and heterosis for agronomic traits in hybrid high erucic acid rapeseed (HEAR)

Assessment of agronomic performance and heterosis for agronomic traits in hybrid high erucic acid rapeseed (HEAR)

Chinese cabbage (Brassica rapa ssp. pekinensis) – a valuable source of resistance to clubroot (Plasmodiophora brassicae)

NDOLA‐2, a high‐yielding, open‐pollinated conventional spring type canola in North Dakota

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