scholarly journals A 24,482-bp Deletion Increases Seed Weight Through Multiple Pathways in Rapeseed (Brassica Napus L.)

2021 ◽  
Author(s):  
Xiaohui Zhang ◽  
Qiyang Huang ◽  
Pengfei Wang ◽  
Feiyang Liu ◽  
Mudan Luo ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Seed Weight ◽  
Brassica Napus L ◽  
Seed Formation ◽  
Haploid Population ◽  
Solid Foundation ◽  
Interval Sequence ◽  
Differential Gene ◽  
Trait Locus ◽  
Multiple Signaling

Abstract Exploration of the genes controlling seed weight is critical to improve crop yield and understand the mechanisms underlying seed formation in rapeseed (Brassica napus L.). We previously identified the quantitative trait locus (QTL) qSW.C9, for the thousand-seed weight (TSW) trait, in a double haploid population constructed from F1 hybrids between the parental accessions HZ396 and Y106. Here, we confirmed the phenotypic effects associated with qSW.C9 in BC3F2 populations and fine-mapped the candidate causal locus to a 266-kb interval. Sequence and expression analyses revealed that a 24,482-bp deletion in HZ396 containing six predicted genes most likely underlies qSW.C9. Differential gene expression analysis and cytological observations suggested that qSW.C9 affects both cell proliferation and cell expansion through multiple signaling pathways. After genotyping a rapeseed diversity panel to define their haplotype structure, we suggest that the selection of germplasm carrying two specific markers may be effective in improving seed weight in rapeseed. This study provides a solid foundation for the identification of the causal gene of qSW.C9 and offers an attractive target for breeding higher-yielding rapeseed.

EFFECTS OF METHOD AND RATE OF SEEDING ON YIELD OF BRASSICA NAPUS

1978 ◽  
Vol 58 (2) ◽  
pp. 549-550 ◽  
Author(s):  
J. M. CLARKE ◽  
F. R. CLARKE ◽  
G. M. SIMPSON
Keyword(s):  
Brassica Napus ◽  
Seed Weight ◽  
Brassica Napus L ◽  
Seeding Method ◽  
Number Of Seeds

Broadcast and drill seeding of Brassica napus L. were compared at four seeding rates. Drill-seeded material yielded more than broadcast-seeded material, particularly at the low seeding rates. Broadcast-seeded plants had more branches and pods than drill-seeded plants. Seeding method did not affect number of seeds per pod or 1,000-seed weight.

Mapping QTL controlling agronomic traits in a doubled haploid population of winter oilseed rape (Brassica napus L.)

2018 ◽  
Vol 97 (5) ◽  
pp. 1389-1406 ◽  
Author(s):  
Farshad Fattahi ◽  
Barat Ali Fakheri ◽  
Mahmood Solouki ◽  
Christian Möllers ◽  
Abbas Rezaizad
Keyword(s):  
Brassica Napus ◽  
Oilseed Rape ◽  
Doubled Haploid ◽  
Agronomic Traits ◽  
Doubled Haploid Population ◽  
Winter Oilseed Rape ◽  
Brassica Napus L ◽  
Mapping Qtl ◽  
Haploid Population

Identification of a major QTL for silique length and seed weight in oilseed rape (Brassica napus L.)

2012 ◽  
Vol 125 (2) ◽  
pp. 285-296 ◽  
Author(s):  
Pu Yang ◽  
Chang Shu ◽  
Lin Chen ◽  
Jinsong Xu ◽  
Jiangsheng Wu ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Oilseed Rape ◽  
Seed Weight ◽  
Brassica Napus L ◽  
Silique Length ◽  
Major Qtl

INFLUENCE OF IRRIGATION AND SEEDING RATES ON YIELD AND YIELD COMPONENTS OF BRASSICA NAPUS CV. TOWER

1978 ◽  
Vol 58 (3) ◽  
pp. 731-737 ◽  
Author(s):  
J. M. CLARKE ◽  
G. M. SIMPSON
Keyword(s):  
Brassica Napus ◽  
Yield Components ◽  
Seed Weight ◽  
Plant Morphology ◽  
Yield Component ◽  
Seeding Rate ◽  
Brassica Napus L ◽  
Relationship Of ◽  
The Relationship ◽  
Number Of Seeds

An analysis of the yield components of rape (Brassica napus L.) was carried out under field conditions for 2 yr at Saskatoon. Plant morphology and the crop environment were altered by the use of four planting densities and three water regimes. The number of branches per plant was scarcely affected by irrigation, but was reduced by high seeding rates. Number of pods per plant was increased by irrigation and reduced by high seeding rates. The number of seeds per pod was increased by irrigation, but reduced by high seeding rates. The 1,000-seed weight was increased both by irrigation and increased seeding rate, as was seed yield. Yield was positively correlated with 1,000-seed weight in both years. Yield component compensation was evident in the relationship of 1,000-seed weight to pod number and number of seeds per pod.

scholarly journals Production of Restorer Lines from Segregating Progenies of Brassica napus L. Having Good Agronomic Value

2020 ◽  
Vol 8 (4) ◽  
pp. 400-409
Author(s):  
A. K. M. Aminul Islam ◽  
F. M. Era ◽  
N. K. Aminul Chowdhury
Keyword(s):  
Brassica Napus ◽  
Seed Yield ◽  
Seed Weight ◽  
Pollen Sterility ◽  
The Other ◽  
Restorer Line ◽  
Brassica Napus L ◽  
Maximum Value ◽  
Plant Fertility ◽  
Number Of Seeds

Forty four testcross progenies obtained from crossing between five CMS and forty one candidate lines were evaluated both in field and laboratory condition to identify candidate restorer line(s). Nineteen testcross progenies were recorded as fully fertile with 100% plant fertility by counting the number of fertile plants from the total number of plants per lines. On the other hand from pollen fertility test, 11 testcross progenies [206A × 001(6), 9905A × 030(2), 9905A × 027(6) (0.57), 206A × 37(1) (0.68), 9904A × 027(4) (0.83), 248A × 020(6) (1.08), 248A × 018 (1.12), 248A × 022 (1.13), 248A × 017 (1.58), 248A × 038(2) (1.96) and 248A × 001(6) (2.02)] were found with 0-2.02% pollen sterility that could be mentioned as fertile or restorer lines for making hybrids. Agronomic performances were also satisfactory for these selected test cross progenies. The genotype 248A × 017 took the shortest time (30.00) for first flowering as well as ripening followed by 248A × 007(1). The highest number of pods per plant was observed in the testcross progeny 248A × 022 (649.59) and the highest number of seeds per pod (30.33) in 248A × 020(6). For seed weight per plant, 206A × 001(6) was recorded with maximum value (0.08g) while the lowest (23.33) number of seeds per plant was found in this progeny. In case of seed yield per plant, 248A × 022 gave the highest yield (30.30). The seed yield of the progenies 248A × 017 (23.49), 9905A × 027(6) (20.39), 248A × 001(6) (17.26), 9904A × 027(4) (17.02) and 248A × 038(2) (16.53) were also in the highest level.

THE EFFECTS OF LEAF REMOVAL ON YIELD AND YIELD COMPONENTS OF BRASSICA NAPUS

1978 ◽  
Vol 58 (4) ◽  
pp. 1103-1105 ◽  
Author(s):  
J. M. CLARKE
Keyword(s):  
Brassica Napus ◽  
Seed Yield ◽  
Yield Components ◽  
Seed Weight ◽  
Field Conditions ◽  
Leaf Removal ◽  
Brassica Napus L ◽  
Yield And Yield Components

The effects of time of leaf removal on Brassica napus L. were studied under field conditions at Saskatoon in 1976 and at Swift Current in 1977. Leaf removal at the start of flowering reduced the number of pods per plant, increased seed weight, and reduced seed yield. Leaf removal at the end of flowering did not affect yield or its components.

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