Inheritance of leafshape in turnip (Brassica rapa L. Partim) and rape (Brassica napus L.)

Euphytica ◽  
1983 ◽  
Vol 32 (2) ◽  
pp. 361-365 ◽  
Author(s):  
Dick J. A. Klein Geltink
Keyword(s):  
Brassica Napus ◽  
Brassica Rapa ◽  
Brassica Napus L

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

Root maggots (Delia spp., Diptera: Anthomyiidae) in prairie canola (Brassica napus L. and B. rapa L.): Spatial and temporal surveys of root damage and prediction of damage levels

2004 ◽  
Vol 84 (4) ◽  
pp. 1171-1182 ◽  
Author(s):  
J. J. Soroka ◽  
L. M. Dosdall ◽  
O. O. Olfert ◽  
E. Seidle
Keyword(s):  
Brassica Napus ◽  
Survey Data ◽  
Brassica Rapa ◽  
Geographic Area ◽  
Western Canada ◽  
Regression Equations ◽  
Root Damage ◽  
Weather Variables ◽  
Brassica Napus L ◽  
Northern Edge

The levels of infestation and damage to canola taproots caused by crucifer-feeding root maggots (Delia spp.)(Diptera: Anthomyiidae) were determined through surveys of commercial crops across the canola growing regions of western Canada. Canola root damage caused by Delia spp. maggots was measured at the end of the season by determining the percentage of plants infested (PPI) per field and estimating average damage levels (DL, on a scale of 0 to 5) to taproots. Over the course of the survey, 2890 canola fields were sampled. Infestation by root maggots occurred wherever canola is grown in western Canada. In the study, 96% of the fields surveyed in Manitoba and Saskatchewan and 99.8% of the fields in Alberta showed evidence of root maggot feeding, with PPI much higher than in provincial surveys of a decade previously. Geographical ecoregion significantly affected both PPI and DL. The greatest amount of damage over the largest area was found in western and northwestern Alberta, although localized areas with severely damaged roots occurred along the northern edge of the entire Parkland ecoregion. Over the entire survey area, Brassica rapa L. roots had greater PPI and DL than B. napus L. roots, although species differences were not significant in Saskatchewan or Manitoba. Data from the survey were correlated with weather variables to develop a model predicting the levels of damage inflicted by root maggots to canola roots. Of the weather variables investigated, temperature, especially the average temperature in the preceding July and August, had the greatest in fluence on PPI and DL. The warmer the temperatures of the preceding July and August, the lower the PPI and DL in the current year. Likewise, previous year’s July and August precipitation influenced PPI and DL negatively. Other weather parameters had little consistent influence on PPI and DI. The predictive model for PPI and DL, developed from the 1995–1998 survey data, incorporated canola species, ecoregion, previous July-August and September-October temperatures and precipitation. The validity of the model was assessed using a set of survey data collected in Alberta from 1981 to 1983. Regression equations of predicted results on actual results were significant. However, r2 values for the regressions were low, in part because of the few ecoregions surveyed and the lack of canola species data recorded in the earlier survey, and because of the large increase in infestation levels since the earlier data were collected. The study is a first step in forecasting the effects of root maggots across a wide geographic area featuring many different canola production practices. Key words: Crucifer-feeding root maggots, Delia spp., canola, Brassica rapa, Brassica napus, pest forecasting, distribution of damage

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

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.

scholarly journals ADUBAÇÃO FOLIAR DE BORO EM DOIS HÍBRIDOS DE CANOLA

Nativa ◽  
2021 ◽  
Vol 9 (5) ◽  
pp. 600-604
Author(s):  
Anderson Bergamasco Hryczyna ◽  
Tiago Roque Benetoli da Silva ◽  
Lucas Ambrosano ◽  
Gesmila Karoline Zampronio
Keyword(s):  
Brassica Napus ◽  
Brassica Oleracea ◽  
Brassica Rapa ◽  
Pollen Grain ◽  
Brassica Napus L ◽  
Cell Wall Development ◽  
Leaf Boron ◽  
Boron Fertilization ◽  
Brassicaceae Family ◽  
Brassica Oleracea L

A canola (Brassica napus L. var oleífera) é uma oleaginosa, pertencente à família Brassicaceae, resultado do cruzamento interespecífico entre repolho silvestre (Brassica oleracea L.) e mostarda (Brassica rapa L., syn. campestris). O boro é considerado um micronutriente, que atua na translocação de açúcares, formação de proteínas, crescimento do tubo polínico, germinação dos grãos de pólen, desenvolvimento das sementes e das paredes celulares. O objetivo desta pesquisa foi estudar as interferências nos componentes produtivos de dois híbridos de canola com a aplicação de adubação com boro por via foliar. Para tanto, instalou-se um experimento em condições de campo num delineamento experimental de blocos ao acaso em arranjo fatorial 2 x 3. Utilizou-se os híbridos Hyola 433 e Hyola 575 CL e três doses de boro foliar (0;100; 200) g ha-1 de B. As seguintes características foram avaliadas:  número de plantas, número de síliquas por planta, massa de parte aérea, massa de 100 grãos e produtividade. Com a aplicação de boro houve aumento da massa de grãos independente do híbrido. Para produtividade houve aumento somente para o híbrido Hyola 433, sendo a maior produtividade alcançada na dose de 200 g ha-1. O híbrido Hyola 575 CL não teve sua produtividade alterada com a aplicação de boro. Palavras-chave: ácido bórico; Brassica napus L. var. oleífera; colza; massa de 100 grãos; oleaginosa.   Leaf boron fertilization in two rapessed   ABSTRACT: Rapessed (Brassica napus L. var oleífera) is an oilseed, belongs to Brassicaceae family, resultated between inter specific crossing of wild cabbage (Brassica oleracea L.) and mustard (Brassica rapa L., syn. campestris). Boron is considered a micronutrient, acting in sugars translocation, protein formation, pollen tube growth, pollen grain germination, seeds and cell wall development. The aimed was to study the interferences in productive components of two rapessed hybrids with application of boron fertilization by leaf application. For this, a field experiment was installed by using experimental design of randomized blocks in a 2 x 3 factorial scheme.  Hyola 433 and Hyola 575CL hybrids and three doses of leaf boron (0; 100 and 200) g ha-1 of B were used. The following characteristics were evaluated: plants number, number of pods per plant, mass of one hundred grains and yield. With boron application there was an increase in grain mass independent of the hybrid. In relation grain yield there was increase only for Hyola 433 hybrid, with the highest yield reached at 200 g ha-1. The Hyola 575CL hybrid did not have its productivity altered with the application of boron. Keywords: boric acid; Brassica napus L. var. oleífera; mustard; mass of a hundred grass; oilseeds.

scholarly journals Using a zero-inflated model to assess gene flow risk and coexistence of Brassica napus L. and Brassica rapa L. on a field scale in Taiwan

2020 ◽  
Vol 61 (1) ◽  
Author(s):  
Yuan-Chih Su ◽  
Po-Shung Wang ◽  
Jhih-Ling Yang ◽  
Hong Hong ◽  
Tzu-Kai Lin ◽  
...  
Keyword(s):  
Gene Flow ◽  
Brassica Napus ◽  
Brassica Rapa ◽  
Field Scale ◽  
Brassica Napus L

Transgenic Brassica napus fields and Brassica rapa weeds in Quebec: sympatry and weed-crop in situ hybridization

2006 ◽  
Vol 84 (12) ◽  
pp. 1842-1851 ◽  
Author(s):  
Marie-Josée Simard ◽  
Anne Légère ◽  
Suzanne I. Warwick
Keyword(s):  
In Situ Hybridization ◽  
Brassica Napus ◽  
Brassica Rapa ◽  
Transgenic Crop ◽  
Herbarium Specimens ◽  
Field Margins ◽  
Brassica Napus L ◽  
Sampling Locations ◽  
Range Overlap

Hybridization between the herbicide-resistant transgenic crop Brassica napus L. (canola) and its weedy relative Brassica rapa L. (bird rape) has been documented in Quebec. Our goal was to evaluate the actual hybridization potential based on range overlap and actual in situ hybridization rates. This was done by mapping B. napus canola fields, comparing them with the sampling locations of B. rapa herbarium specimens from Quebec, gathering information on the presence of B. rapa in certified canola seed production fields, and surveying for B. rapa populations located in, or close to B. napus field margins. Progeny from these populations were screened for herbicide resistance (HR) and for the presence of the HR transgene. Two fields were also selected to evaluate B. rapa density effects on hybridization rates. Significant sympatry was observed in several areas of the province; hybridization occurred in all eight populations (1.1% to 17.5% hybrid seed) located in field margins and in one (1.1%) out of three populations located less than 10 m from a B. napus field. Hybridization rates decreased exponentially as B. rapa density increased, but interplant rates (0% to 68%) were highly variable. Environmental problems could be generated by the release of B. napus crops with traits conferring fitness benefits in nonmanaged areas.

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