Effects of applied sulfur on glucosinolate and oil concentrations in the seeds of rape (Brassica napus L.) and turnip rape (Brassica rapa L. var. silvestris (Lam.) Briggs)

1989 ◽  
Vol 40 (3) ◽  
pp. 617 ◽  
Author(s):  
RJ Mailer
Keyword(s):  
Brassica Napus ◽  
Brassica Rapa ◽  
Seed Oil ◽  
New South ◽  
Field Trials ◽  
Seed Meal ◽  
Limiting Factor ◽  
Brassica Napus L ◽  
Turnip Rape ◽  
Glucosinolate Concentration

The effect of sulfur availability on glucosinolate concentration in seed meal of glasshouse grown Brassica nupus cv. Wesbrook and Brassica rapa cv. Runyip was studied. In addition, field trials were evaluated to determine the degree of variability of glucosinolate concentrations in the seed and of sulfur in the plants of rapeseed grown at a number of sites throughout New South Wales.Glucosinolate concentration in seeds grown in the glasshouse increased (P < 0.01) in both cultivars with increasing sulfur application, ranging from an average of 5 8mol at 4 8g g-1 to 55 8mol at 100 8g g-1 sulfur. Bunyip containcd significantly higher concentrations (Pt0-01) than Wesbrook. Increased rates of sulfur application resulted in increased (P < 0.01) seed oil concentrations (from 28.7 to 37.6%), yield (3.1-27.1 g) and 1000-grain weights (2.1-2.9 g). Field trials showed site (P < 0.01) and cultivar (P<0.01) variation in glucosinolate levels. However, sulfur did not appear to be an independently limiting factor in field-grown plants.

FIELD STUDIES OF MOISTURE AVAILABILITY EFFECTS ON GLUCOSINOLATE AND OIL CONCENTRATION IN THE SEED OF RAPE, (Brassica napus L.) AND TURNIP RAPE (Brassica rapa L. var. silvestris (Lam.) Briggs).

1990 ◽  
Vol 70 (2) ◽  
pp. 399-407 ◽  
Author(s):  
R. J. MAILER ◽  
J. E. PRATLEY
Keyword(s):  
Brassica Napus ◽  
Brassica Rapa ◽  
Water Availability ◽  
Field Studies ◽  
High Water ◽  
Water Levels ◽  
Brassica Napus L ◽  
Turnip Rape ◽  
Glucosinolate Concentration ◽  
Oil Concentration

Field studies of water availability during development and glucosinolate concentration in mature seed showed that glucosinolate concentration was closely correlated (R2 = 34 – 82%) with evapotranspiration between anthesis and maturity. Glucosinolate concentration increased with increasing moisture to a maximum and then declined again at high water levels. Oil concentration also increased with increasing moisture availability.Key words: Rapeseed, Brassica napus L., Cruciferae, glucosinolate, water availability

Effects of water stress on glucosinolate and oil concentrations in the seeds of rape (Brassica napus L.) and turnip rape (Brassica rapa L. var. silvestris [Lam.] Briggs)

1987 ◽  
Vol 27 (5) ◽  
pp. 707 ◽  
Author(s):  
RJ Mailer ◽  
PS Cornish
Keyword(s):  
Water Stress ◽  
Brassica Napus ◽  
Brassica Rapa ◽  
Seed Oil ◽  
Growing Season ◽  
Brassica Napus L ◽  
Plant Water Stress ◽  
Significant Difference ◽  
Influence Of Water ◽  
Glucosinolate Concentration

Growing-season conditions influence the concentration of glucosinolates in the meal of rapeseed, but the reasons for this are unknown. We studied the effect of water stress on glucosinolate concentration in the seed meal of Brassica napus cv. Wesbrook and Brassica rapa cv. Bunyip. Plants were either wellwatered or given a reduced supply of water which was managed to produce a desired degree of plant water stress either throughout growth or only after flowering. Glucosinolate concentration in seeds increased (P<0.01) in both cultivars from an average 18.2 �mol/g in unstressed plants to 35.0 �mol/g under the influence of water stress. There was no significant difference between the 2 stressed treatments. Water stress also decreased (P < 0.0 1) seed oil concentrations (from 36.9 to 31.4%), yields (from 5.3 to 0.9 g/plant) and 1000-grain weights (from 4.1 to 3.0 g).

Introgression of long pod genotype from spring rape (Brassica napus L.) into summer turnip rape (Brassica rapa L.)

2001 ◽  
Vol 81 (1) ◽  
pp. 59-60 ◽  
Author(s):  
L. J. Lewis ◽  
D. L. Woods ◽  
B. F. Cheng
Keyword(s):  
Brassica Napus ◽  
Key Words ◽  
Seed Size ◽  
Brassica Rapa ◽  
Interspecific Hybridisation ◽  
Brassica Napus L ◽  
Turnip Rape ◽  
Pod Length ◽  
Spring Rape

Long pod character from a summer Brassica napus L. line was introgressed into turnip rape B. rapa L. cultivar AC Sunshine resulting in progeny lines with significantly longer pods and larger seed size than those of AC Sunshine, but producing no yield advantage. Key words: Brassica rapa, Brassica napus, pod length, summer turnip rape, spring rape, interspecific hybridisation

HYHEAR 1 hybrid Roundup Ready™ high erucic acid, low glucosinolate summer rape

2014 ◽  
Vol 94 (2) ◽  
pp. 453-455 ◽  
Author(s):  
P. B. E. McVetty ◽  
J. L. Cuthbert ◽  
V. Marwede ◽  
W. Paulmann ◽  
O. Sass ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Erucic Acid ◽  
Seed Oil ◽  
Field Trials ◽  
Erucic Acid Content ◽  
Western Canada ◽  
Brassica Napus L ◽  
Roundup Ready ◽  
High Erucic Acid ◽  
Meal Protein

McVetty, P. B. E., Cuthbert, J. L., Marwede, V., Paulmann, W., Sass, O., Duncan, R. W., Fernando, W. G. D., Li, G. and Zelmer, C. D. 2014. HYHEAR 1 hybrid Roundup Ready™ high erucic acid, low glucosinolate summer rape. Can. J. Plant Sci. 94: 453–455. HYHEAR 1 summer rape (Brassica napus L.) is the world's first hybrid Roundup Ready™ high erucic acid, low glucosinolate cultivar. On average, HYHEAR 1 yielded 33% more seed, 23 g kg−1 more seed oil but 17 g kg −1 less meal protein than MillenniUM 03 high erucic acid, low glucosinolate, open pollinated population summer rape. HYHEAR 1 has an erucic acid content of 52.2% in isolated field trials of HEAR lines and is adapted to the southern B. napus growing regions of western Canada.

scholarly journals Unravelling the Complex Interplay of Transcription Factors Orchestrating Seed Oil Content in Brassica napus L.

2021 ◽  
Vol 22 (3) ◽  
pp. 1033
Author(s):  
Abirami Rajavel ◽  
Selina Klees ◽  
Johanna-Sophie Schlüter ◽  
Hendrik Bertram ◽  
Kun Lu ◽  
...  
Keyword(s):  
Gene Expression ◽  
Transcription Factors ◽  
Brassica Napus ◽  
Oil Content ◽  
Seed Oil ◽  
Seed Oil Content ◽  
Complex Interplay ◽  
Brassica Napus L ◽  
Data Set ◽  
Developmental Switches

Transcription factors (TFs) and their complex interplay are essential for directing specific genetic programs, such as responses to environmental stresses, tissue development, or cell differentiation by regulating gene expression. Knowledge regarding TF–TF cooperations could be promising in gaining insight into the developmental switches between the cultivars of Brassica napus L., namely Zhongshuang11 (ZS11), a double-low accession with high-oil- content, and Zhongyou821 (ZY821), a double-high accession with low-oil-content. In this regard, we analysed a time series RNA-seq data set of seed tissue from both of the cultivars by mainly focusing on the monotonically expressed genes (MEGs). The consideration of the MEGs enables the capturing of multi-stage progression processes that are orchestrated by the cooperative TFs and, thus, facilitates the understanding of the molecular mechanisms determining seed oil content. Our findings show that TF families, such as NAC, MYB, DOF, GATA, and HD-ZIP are highly involved in the seed developmental process. Particularly, their preferential partner choices as well as changes in their gene expression profiles seem to be strongly associated with the differentiation of the oil content between the two cultivars. These findings are essential in enhancing our understanding of the genetic programs in both cultivars and developing novel hypotheses for further experimental studies.

Characterising canola pollen germination across a temperature gradient

2016 ◽  
Vol 67 (4) ◽  
pp. 317 ◽  
Author(s):  
Malcolm J. Morrison ◽  
Allison Gutknecht ◽  
John Chan ◽  
S. Shea Miller
Keyword(s):  
Heat Stress ◽  
Brassica Napus ◽  
Thermal Gradient ◽  
Pollen Germination ◽  
Limiting Factor ◽  
Major Goal ◽  
Brassica Napus L ◽  
Influence Of Temperature ◽  
Heat Stress Tolerance ◽  
Stress Susceptibility

If predictions are correct, heat stress during reproduction will become a yield limiting factor in many world crops and breeding heat stress tolerance a major goal. The objective of our paper was to highlight a novel system to investigate the influence of temperature (T) on pollen germination using a thermal gradient PCR programmed to establish differential Ts across 12 wells of a PCR plate. Seven cultivars of Brassica napus L. were grown through flowering in a cool growth cabinet (20/15°C day/night) or a heat stress cabinet (HST, 27/22°C day/night). Pollen from each cultivar × cabinet combination was aspirated from 6 opened flowers, and suspended in germination media. Drops of the pollen suspension were floated on media in each well, and the PCR T was set to 30°C with a gradient of ± 10°C, creating a range from ~20 to 40°C from left to right. After an 8 h treatment, the pollen germination (pg, %) and pollen tube growth score (ptg, 1–5) were evaluated using a microscope. There were significant differences among cultivars for pg and ptg score and significant differences among well T for pg and ptg score. Pollen tubes grew best at T from 20 to 23°C. Well T exceeding 33°C reduced pg and ptg score, although 3 of the 8 cultivars had good pg even at 36°C. HST >29°C, in a growth cabinet, generally resulted in B. napus raceme sterility, although our experiment showed that pollen was still capable of germinating up to 33°C, indicating that pollen germination may not be the only reason for heat stress susceptibility.

ACS-C18 summer turnip rape

2010 ◽  
Vol 90 (2) ◽  
pp. 189-190
Author(s):  
K C Falk
Keyword(s):  
Brassica Rapa ◽  
Seed Oil ◽  
Western Canada ◽  
Parent Population ◽  
Turnip Rape ◽  
Meal Protein ◽  
Cultivar Description ◽  
Short Season ◽  
Canola Quality

ACS-C18 summer turnip rape (Brassica rapa L.) is a canola-quality, two-parent population-synthetic (Syn1) cultivar adapted to the short-season growing areas of western Canada. On average, it yielded 17% more than the WCC/RRC checks over three years of testing and has high seed oil and meal protein contents.Key words: Turnip rape (summer), synthetic, cultivar description

SELECTIVE CONTROL OF CANADA THISTLE IN RAPESEED WITH 3,6-DICHLOROPICOLINIC ACID

1982 ◽  
Vol 62 (4) ◽  
pp. 989-993 ◽  
Author(s):  
P. A. O’SULLIVAN ◽  
V. C. KOSSATZ
Keyword(s):  
Brassica Napus ◽  
Brassica Campestris ◽  
Field Trials ◽  
Cirsium Arvense ◽  
Canada Thistle ◽  
Brassica Napus L ◽  
Selective Control

Control of Canada thistle (Cirsium arvense L. Scop.) topgrowth and regrowth, and tolerance of rapeseed (Brassica campestris L. and Brassica napus L.) to 3,6-dichloropicolinic acid at 0.2–0.3 kg/ha were excellent in greenhouse and field trials. Rapeseed yields following postemergence treatment were increased in 12 of 17 trials conducted on infested farm fields.

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