Relationships between genetic distance, combining ability and heterosis in rapeseed (Brassica napus L.)

Tian, H. Y.; Channa, Siraj Ahmed; Hu, Shen

doi:10.1007/s10681-016-1788-x

Cited by 50 publications

(41 citation statements)

References 39 publications

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“…Further, our results suggested that SCA effects had stronger significant positive correlation with MPH and BPH for all the studied traits (0.52-0.83) at P ≤ 0.01. These results are in conformity with the findings of Zhang et al [88], Su et al [73], Tian et al [78] in barley, chrysanthemum and rapeseed, respectively and indicated non-additive gene effects for heterosis. The GD and PD differed in their ability to predict MPH and BPH for different traits.…”

Section: Discussionsupporting

confidence: 93%

“…Our results are in conformity with Su et al [73] who also reported no significant association between genetic distances and SCA in chrysanthemum. However, Tian et al [78], Lariepe et al [44] reported significant correlation between total GD and SCA for length of terminal raceme in rapeseed, for grain yield and plant height in maize, respectively. Thus the association of GD with SCA is complicated.…”

Section: Discussionmentioning

confidence: 99%

“…The parents with small GD can also display high level of heterosis like closely related ecotypes in Arabidopsis resulted hybrids with significant improvement in plant biomass and seed yield [26, 32]. Contrasting results are also available about association of genetic distance based on morphological traits (hereafter referred as PD: phenotypic distance) and mid-parent heterosis (MPH) and SCA in various crop plants [33, 78, 79, 86]. Teklewold and Becker [79] reported significantly positive association of PD with MPH, GCA and hybrid performance for seed yield in Ethiopian mustard ( Brassica carinata ), while Hale et al [34] found no correlation of PD with heterosis in broccoli.…”

Section: Introductionmentioning

confidence: 99%

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Doubled haploid based parental lines are most suitable in predicting heterosis using microsatellites and in development of highly heterotic F₁hybrids inBrassica oleracea

Singh

Dey

Bhatia

et al. 2019

Preprint

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In Brassica oleracea, heterosis is one of the most efficient tools giving impetus to hybrid vegetable industry. In this context, we presented the first report on identifying superior heterotic crosses for yield and commercial traits in cauliflower involving cytoplasmic male sterile (CMS) and doubled haploid (DH) lines as parents. We studied the suitability of SSR and EST-SSRs based genetic distance (GD) and morphological markers based phenotypic distance (PD) in prediction of heterosis when DH based genotypes are used as parents in developing F1 hybrids. Overall 120 F1 hybrids derived from twenty Ogura cybrid CMS lines and six DH based testers were evaluated for 16 phenotypic traits along with their 26 parental lines and 4 commercial standard checks, in 10 × 15 alpha lattice design. The genomic SSR and EST-SSRs based genetic structure analysis grouped 26 parental lines into 4 distinct clusters. The CMS lines Ogu118-6A, Ogu33A, Ogu34-1A were good general combiner for developing short duration hybrids. The SCA effects were significantly associated with heterosis suggesting non-additive gene effects for heterotic response of hybrids. Less than unity value of σ2A/D coupled with σ2gca/σ2sca indicated the predominance of non-additive gene action in the expression of studied traits. The genetic distance estimates among 26 parents ranged from 0.44 to 0.98 and were significantly associated with heterosis for important commercial traits, suggesting the utility of microsatellite based genetic distance in prediction of heterosis in B. oleracea.

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Section: Discussionsupporting

confidence: 93%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Doubled haploid based parental lines are most suitable in predicting heterosis using microsatellites and in development of highly heterotic F₁hybrids inBrassica oleracea

Singh

Dey

Bhatia

et al. 2019

Preprint

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“…Rapeseed (Brassica napus L.) is one of the most important oilseed crops in the world because it is edible oil source for human and a potential future source for renewable biofuel (Tian et al, 2016). The traditional method of seedling transplantation, which demands more labor force and cost, is nowadays replaced with direct-seeding method .…”

Section: Introductionmentioning

confidence: 99%

Identifying Differentially Expressed Genes Associated with Tolerance against Low Temperature Stress in Brassica napus through Transcriptome Analysis

Xian¹,

Luo²,

Khan³

et al. 2017

IJAB

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To cite this paper: Xian, M., T. Luo, M.N. Khan, L. Hu and Z. Xu, 2017. Identifying differentially expressed genes associated with tolerance against low temperature stress in Brassica napus through transcriptome analysis. AbstractUnder direct-seeding method of sowing, seedling survival is adversely affected due to low temperature. The purpose of this study was to understand the morphological, physiological and molecular response of rapeseed resistance to low temperature stress at seedling establishment. Two varieties Qinyou No.7 (resistant biotype) and Fengyou 730 (sensitive biotype) were used for morphological and physiological experiments under low temperature stress and the resistant variety was used for transcriptome analysis based on the Illumina HiSeq 2000 platform. Results showed resistant variety initiated osmotic regulation system firstly and then triggered the antioxidant enzyme system when exposed to low temperature stress for long duration. The MDA content firstly tended to increase and then decreased in resistant variety, but it continued to increase in sensitive variety. Through transcriptome analysis of Qinyou No. 7 under low temperature for 0 h, 24 h, 48 h and 96 h, 2254 differentially expressed unigenes clustering in 7 expression patterns were participated in low temperature stress. Proteinserine/threonine kinases, myo-inositol-1-phosphate synthases and calmodulins, as the members of ABA and IP3/Ca2+ signal transduction pathway, played an important role in the low temperature stress. Different expressed genes dataset provides useful candidate genes for functional analysis of rapeseed resistance to low temperature.

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“…Hybrid breeding dogma includes that parents need to be genetically diverse to guarantee heterosis (Boeven et al, 2016). However, genomic tools have revealed that diversity does not consistently lead to heterosis, nor underpin it as a basic genetic explanation (e.g., Martin et al, 1995); Barbosa‐Neto et al, 1996; Corbellini et al, 2002 in wheat; Geleta et al, 2004 in pepper ( Capsicum annuum L.); Teklewold and Becker, 2006 in mustard ( Brassica carinata A. Braun); and Luo et al, 2016; Tian et al 2016 in rapeseed [ Brassica napus L.]). Correlations between parental genetic distances and phenotypic hybrid performance have actually, and quite consistently, been low to very low, which shows that overall genetic diversity alone is not enough to obtain heterosis.…”

Section: Hybrid‐enabled Line Profiling (Help)mentioning

confidence: 99%

Cross the Best with the Best, and Select the Best: HELP in Breeding Selfing Crops

Ginkel¹,

Ortíz

2018

Crop Science

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P lant breeding, certainly in the era before genomics and marker-assisted selection, was often referred to as a "numbers game." The more crosses, the more likely it is to find improved genetic combinations. We propose a newly integrated breeding strategy for self-fertilizing crops that dramatically reduces the number of crosses being promoted while increasing the likelihood of obtaining superior new cultivars. This strategy emerges from experiments in the Bread Wheat Program of the International Center for the Improvement of Maize and Wheat (CIMMYT).In the late 1990s we noticed that ~8% of the elite new lines in the International Bread Wheat Screening Nursery (IBWSN) for international distribution were derived from <20 crosses. The remaining 92% of elite lines came from 5000 to 10,000 crosses. These few original crosses, and the lines derived from them, represented a strategy that we now describe as hybrid-enabled line profiling (HELP). This strategy offers breeding programs for selfing crops enormous benefits through improved performance. It Cross the Best with the Best, and Select the Best: HELP in Breeding Selfing CropsMaarten van Ginkel* and Rodomiro Ortiz ABSTRACT Hybrid-enabled line profiling (HELP) is a new integrated breeding strategy for self-fertilizing crops that combines existing and recently identified elements, resulting in a strategy that synergistically exceeds existing breeding concepts. Heterosis in selfing crops is often driven by additive and additive ´ additive gene action, the molecular basis of which is increasingly being revealed. Unlike nonadditive heterosis, additive forms can be relatively easily fixed in homozygous lines, meaning that their seed can simply be resown to express the same "heterosis." Crossing diverse, complementary "selfing" parents to create the desired trait or allele line profile requires strict male sterility of the female; this can now be achieved relatively easily through present and emerging chemical, environmental, or genetic techniques. Fairly small amounts of hybrid seed are needed, with no need to scale up seed production, as it is not the hybrid that will be commercialized. After multilocation testing, homozygous lines from only the most superior hybrids, driven mainly by additive effects and additive ´ additive gene action, are rapidly derived using techniques such as doubled haploids. Multilocation testing and molecular confirmation of target line profiles then identify superior lines for release to farmers. The HELP strategy integrates modern high-throughput versions of existing and new concepts and methodologies into a breeding system strategy that focuses on the most superior crosses, <10% of all crosses. This focus results in significant increases in efficiency and can reverse the edible yield plateauing seen or feared in some of our major selfing food crops.M. van Ginkel,

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Relationships between genetic distance, combining ability and heterosis in rapeseed (Brassica napus L.)

Cited by 50 publications

References 39 publications

Doubled haploid based parental lines are most suitable in predicting heterosis using microsatellites and in development of highly heterotic F₁hybrids inBrassica oleracea

Doubled haploid based parental lines are most suitable in predicting heterosis using microsatellites and in development of highly heterotic F₁hybrids inBrassica oleracea

Identifying Differentially Expressed Genes Associated with Tolerance against Low Temperature Stress in Brassica napus through Transcriptome Analysis

Cross the Best with the Best, and Select the Best: HELP in Breeding Selfing Crops

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Relationships between genetic distance, combining ability and heterosis in rapeseed (Brassica napus L.)

Cited by 50 publications

References 39 publications

Doubled haploid based parental lines are most suitable in predicting heterosis using microsatellites and in development of highly heterotic F1hybrids inBrassica oleracea

Doubled haploid based parental lines are most suitable in predicting heterosis using microsatellites and in development of highly heterotic F1hybrids inBrassica oleracea

Identifying Differentially Expressed Genes Associated with Tolerance against Low Temperature Stress in Brassica napus through Transcriptome Analysis

Cross the Best with the Best, and Select the Best: HELP in Breeding Selfing Crops

Contact Info

Product

Resources

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Doubled haploid based parental lines are most suitable in predicting heterosis using microsatellites and in development of highly heterotic F₁hybrids inBrassica oleracea

Doubled haploid based parental lines are most suitable in predicting heterosis using microsatellites and in development of highly heterotic F₁hybrids inBrassica oleracea