Inheritance and agronomic performance of an apetalous flower mutant in Brassica napus L

Zhao, Yun; Wang, M. L.

doi:10.1023/b:euph.0000040522.37048.7a

Cited by 21 publications

(14 citation statements)

References 7 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Habekotté et al (1997) recommended combining traits such as high leaf area index, apetalous flowers, and erect pods to maximize radiation interception and yield potential. However, direct comparison of an apetalous hybrid line and the corresponding petaled near-isogenic line revealed that seed yield was not significantly higher in apetalous plants, except when the plants were affected by Sclerotinia sclerotiorum (Zhao and Wang 2004).…”

Section: Defining the Ideotype Of A Nitrogen-efficient Rapeseedmentioning

confidence: 93%

Nitrogen use efficiency in rapeseed. A review

Bouchet

Laperche

Bissuel-Bélaygue

et al. 2016

Agron. Sustain. Dev.

175

View full text Add to dashboard Cite

Mineral nitrogen fertilization has improved crop yield over the last century but has also caused air and water pollution. Reduction of nitrogen inputs and maintaining high yields are therefore essential to ensure a more sustainable agriculture. Improving the nitrogen use efficiency (NUE) of crops is therefore needed. Rapeseed, Brassica napus, depends on nitrogen fertilization due to its low NUE, with the ratio of plant nitrogen content to nitrogen supplied often not exceeding 60 %. Here, we review the major phenotypic traits associated with NUE in B. napus, with special emphasis on winter oilseed rape. We discuss the genetic diversity available and potential breeding strategies. The major points are the following: (1) rapeseed seed yield elaboration is complex, with overlapping phases of nitrogen uptake and remobilization during the crop cycle; (2) traits related to nitrogen uptake, such as root length and the amount of nitrogen absorbed after flowering, and traits related to nitrogen remobilization, such as the "staygreen" phenotype, have been identified as possible levers to improve NUE in rapeseed; (3) a substantial body of studies investigating the genetic control of NUE traits have already published and potential candidate genes identified; and (4) rapeseed genetic diversity may be enriched by exploiting interpopulation genetic variation and the closely related gene pools of Brassica rapa and Brassica oleracea.

show abstract

Section: Defining the Ideotype Of A Nitrogen-efficient Rapeseedmentioning

confidence: 93%

Nitrogen use efficiency in rapeseed. A review

Bouchet

Laperche

Bissuel-Bélaygue

et al. 2016

Agron. Sustain. Dev.

175

View full text Add to dashboard Cite

show abstract

Section: Genetic Resistancementioning

confidence: 99%

“…Apetalous B. napus plants have a genetic mutation that affects their ability to develop petals (Zhao & Wang, 2004). These mutant plants develop less SSR, presumably as a result of the lack of primary infection substrate available for establishment of S. sclerotiorum (Zhao & Wang, 2004). In glasshouse experiments, the reduction in petal numbers appeared to correlate with a reduction in disease incidence (Young & Werner, 2012).…”

Section: Genetic Resistancementioning

confidence: 99%

The control of sclerotinia stem rot on oilseed rape (Brassica napus): current practices and future opportunities

2016

View full text Add to dashboard Cite

Sclerotinia stem rot (SSR) caused by the phytopathogenic fungus Sclerotinia sclerotiorum is a major disease of oilseed rape (Brassica napus). During infection, large, white/grey lesions form on the stems of the host plant, perturbing seed development and decreasing yield. Due to its ability to produce long‐term storage structures called sclerotia, S. sclerotiorum inoculum can persist for long periods in the soil. Current SSR control relies heavily on cultural practices and fungicide treatments. Cultural control practices aim to reduce the number of sclerotia in the soil or create conditions that are unfavourable for disease development. These methods of control are under increased pressure in some regions, as rotations tighten and inoculum levels increase. Despite their ability to efficiently kill S. sclerotiorum, preventative fungicides remain an expensive gamble for SSR control, as their effectiveness is highly dependent on the ability to predict the establishment of microscopic infections in the crop. Failure to correctly time fungicide applications can result in a substantial cost to the grower. This review describes the scientific literature pertaining to current SSR control practices. Furthermore, it details recent advances in alternative SSR control methods including the generation of resistant varieties through genetic modification and traditional breeding, and biocontrol. The review concludes with a future directive for SSR control on oilseed rape.

show abstract

“…Deciduous petals can transmit the Sclerotinia pathogen to healthy tissue, whereas the ascospores that land directly on the leaf surface do not germinate ( Jamaux and Spire, 1999 ). Compared with normal petaled controls, apetalous genotypes have a much lower incidence and severity of Sclerotinia infection ( Lefol and Morrall, 1996 ; Zhao and Wang, 2004 ). Moreover, a multitude of other diseases, such as Botrytis cinierea and Peronospora parasitica , may be distributed by petals ( Lefol and Morrall, 1996 ).…”

Section: Introductionmentioning

confidence: 99%

High-Density SNP Map Construction and QTL Identification for the Apetalous Character in Brassica napus L.

Wang

et al. 2015

Front. Plant Sci.

View full text Add to dashboard Cite

The apetalous genotype is a morphological ideotype for increasing seed yield and should be of considerable agricultural use; however, only a few studies have focused on the genetic control of this trait in Brassica napus. In the present study, a recombinant inbred line, the AH population, containing 189 individuals was derived from a cross between an apetalous line ‘APL01’ and a normally petalled variety ‘Holly’. The Brassica 60 K Infinium BeadChip Array harboring 52,157 single nucleotide polymorphism (SNP) markers was used to genotype the AH individuals. A high-density genetic linkage map was constructed based on 2,755 bins involving 11,458 SNPs and 57 simple sequence repeats, and was used to identify loci associated with petalous degree (PDgr). The linkage map covered 2,027.53 cM, with an average marker interval of 0.72 cM. The AH map had good collinearity with the B. napus reference genome, indicating its high quality and accuracy. After phenotypic analyses across five different experiments, a total of 19 identified quantitative trait loci (QTLs) distributed across chromosomes A3, A5, A6, A9 and C8 were obtained, and these QTLs were further integrated into nine consensus QTLs by a meta-analysis. Interestingly, the major QTL qPD.C8-2 was consistently detected in all five experiments, and qPD.A9-2 and qPD.C8-3 were stably expressed in four experiments. Comparative mapping between the AH map and the B. napus reference genome suggested that there were 328 genes underlying the confidence intervals of the three steady QTLs. Based on the Gene Ontology assignments of 52 genes to the regulation of floral development in published studies, 146 genes were considered as potential candidate genes for PDgr. The current study carried out a QTL analysis for PDgr using a high-density SNP map in B. napus, providing novel targets for improving seed yield. These results advanced our understanding of the genetic control of PDgr regulation in B. napus.

show abstract

Inheritance and agronomic performance of an apetalous flower mutant in Brassica napus L

Cited by 21 publications

References 7 publications

Nitrogen use efficiency in rapeseed. A review

Nitrogen use efficiency in rapeseed. A review

The control of sclerotinia stem rot on oilseed rape (Brassica napus): current practices and future opportunities

High-Density SNP Map Construction and QTL Identification for the Apetalous Character in Brassica napus L.

Contact Info

Product

Resources

About