An insight in the genetic control and interrelationship of some quality traits in Brassica napus

Ahmad, Shahbaz; Sadaqat, Hafeez Ahmad; Tahir, Mukkram Ali; Awan, Faisal Saeed

doi:10.4238/2015.december.22.19

Cited by 2 publications

(2 citation statements)

References 21 publications

(7 reference statements)

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“…The main objective of B. napus breeding is to increase the seed oil content (OC) and improve the fatty acid profile to meet food and industrial demands (Ahmad et al ., 2015), and correlation studies can inform the design of a breeding programme aimed at the simultaneous improvement of multiple traits (Kumar, 2013). In addition to the effects of genetics, the environment is another vital factor that influences B. napus quality traits (Gunasekera et al ., 2006; Zhang et al ., 2013).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of quality traits and their genetic variation in global collections ofBrassica napusL

Gao

et al. 2017

Plant Genet. Resour.

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Evaluating quality traits is important to the selection of elite lines in Brassica napus L. In this study, the quality traits of 488 global collections of B. napus L were evaluated for two consecutive years under central Chinese growing conditions, and a series of phenotypic data was obtained. The measured total glucosinolate content (GLC) and erucic acid content (ERU) values for 95.5% of the accessions were consistent with the original values, and large variations in quality traits were found among these accessions, thus enabling selection for these characters. In general, Chinese accessions tended to have a higher oil content (OC) than foreign accessions, while compared with winter and spring accessions, semi-winter accessions tended to have the highest OC. The mean GLC and ERU of Chinese rapeseed accessions showed gradual downward trends over time, and the genotypic variation in ERU accounted for 98.44% of the total variation, which was the highest among all 10 of the quality traits. Additionally, the heritability for ERU was largest among all 10 of the quality traits. Significant correlations were observed between different traits; OC had significantly (P < 0.01) negative correlation coefficients with oleic acid content, whereas OC had significantly (P < 0.01) positive correlation coefficients with ERU. Principal component analysis revealed that there was no clear boundary among materials of different geographic origins and different ecotypes according to the first two principal coordinates, respectively. This information about variations in quality traits revealed in this study could identify parents for improved rapeseed breeding.

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Section: Introductionmentioning

confidence: 99%

Evaluation of quality traits and their genetic variation in global collections ofBrassica napusL

Gao

et al. 2017

Plant Genet. Resour.

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“…To date, the consumption of vegetable oil has risen sharply in order to meet the demands of population growth and the developing global economy (Ahmad et al, 2015). Therefore, increasing rapeseed oil production is one of the key yield parameters important for rapeseed breeding.…”

Section: Introductionmentioning

confidence: 99%

Identification and cloning of GOLDEN2-LIKE1 (GLK1), a transcription factor associated with chloroplast development in Brassica napus L.

Pan¹,

Qu²,

Cheng-gang³

et al. 2017

Genet. Mol. Res.

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ABSTRACT. Photosynthesis is the process by which dry matter accumulates, which affects rapeseed yield. In this study, we identified GOLDEN2-LIKE1 (GLK1), located on chromosome A07 and 59.2 kb away from the single nucleotide polymorphism marker SNP16353A07, which encodes a transcription factor associated with the rate of photosynthesis in leaves. We then identified 96 GLK1 family members from 53 species using a hidden Markov model (HMM) search and found 24 of these genes, which were derived from 17 Brassicaceae species. Phylogenetic analysis showed that 24 Brassicaceae proteins were classified into three subgroups, named the Brassica family, Adenium arabicum, and Arabidopsis. Using homologous cloning methods, we identified four BnaGLK1 copies; however, the coding sequences were shorter than the putative sequences from the reference genome, probably due to splicing errors among the reference genome sequence or different gene copies being present in the different B. napus lines. In addition, we found that BnaGLK1 genes were expressed at higher levels in leaves with more chloroplasts than were present in other leaves. Overexpression of BnaGLK1a resulted in darker leaves and siliques than observed in the control, suggesting that BnaGLK1 might promote chloroplast development to affect the rate of photosynthesis in leaves. These results will help to elucidate the mechanism of chloroplast biogenesis by GLK1 in B. napus.

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An insight in the genetic control and interrelationship of some quality traits in Brassica napus

Cited by 2 publications

References 21 publications

Evaluation of quality traits and their genetic variation in global collections ofBrassica napusL

Evaluation of quality traits and their genetic variation in global collections ofBrassica napusL

Identification and cloning of GOLDEN2-LIKE1 (GLK1), a transcription factor associated with chloroplast development in Brassica napus L.

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