Influence of plant density on yield of homozygous and heterozygous winter rapeseed (Brassica napus L.)

Euphytica ◽  
1986 ◽  
Vol 35 (3) ◽  
pp. 823-834 ◽  
Author(s):  
Marianne Lefort-Buson ◽  
Yvette Dattee
Keyword(s):  
Brassica Napus ◽  
Plant Density ◽  
Brassica Napus L ◽  
Winter Rapeseed

Optimization of Plant Density and Row Spacing for Mechanical Harvest in Winter Rapeseed (Brassica napus L.)

2016 ◽  
Vol 42 (6) ◽  
pp. 898
Author(s):  
Jie KUAI ◽  
Ying-Ying SUN ◽  
Qing-Song ZUO ◽  
Qing-Xi LIAO ◽  
Suo-Hu LENG ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Plant Density ◽  
Row Spacing ◽  
Brassica Napus L ◽  
Winter Rapeseed

scholarly journals Extent and structure of linkage disequilibrium in canola quality winter rapeseed (Brassica napus L.)

2009 ◽  
Vol 120 (5) ◽  
pp. 921-931 ◽  
Author(s):  
Wolfgang Ecke ◽  
Rosemarie Clemens ◽  
Nora Honsdorf ◽  
Heiko C. Becker
Keyword(s):  
Linkage Disequilibrium ◽  
Brassica Napus ◽  
Brassica Napus L ◽  
Winter Rapeseed ◽  
Canola Quality

scholarly journals DOUBLE CROPPING WINTER RAPESEED AND GRAIN SORGHUM

1986 ◽  
Vol 66 (3) ◽  
pp. 425-430 ◽  
Author(s):  
R. R. DUNCAN ◽  
C. S. HOVELAND
Keyword(s):  
Glycine Max ◽  
Brassica Napus ◽  
Cropping System ◽  
Grain Sorghum ◽  
Winter Rape ◽  
Brassica Napus L ◽  
Double Cropping ◽  
Glycine Max L ◽  
Winter Rapeseed ◽  
Sorghum Bicolor L

Since rainfall generally exceeds 500 mm during the winter months and soil erosion is a problem in the southern U.S.A., a cover crop is essential to reduce soil losses. Continuous cultivation of a crop on the same land also provides the opportunity for pest problems to develop. A winter rapeseed (Brassica napus L.)-grain sorghum (Sorghum bicolor (L). Moench.) double-cropping system was investigated in the field from 1981 to 1984. Conventional tillage (CT) and no-till (NT) systems were used for both crops. Gullivar rape was planted in October and harvested in June. Winter rapeseed yields averaged 2.87 t ha−1 on CT plots in 1982. Averaged over 1983 and 1984, rape yields were 1.66 and 0.73 t ha−1 on CT and NT plots, respectively. However, the seeding method biased the rapeseed performance. Problems were encountered with winter weed control and pod shattering in the winter rape plots. Two sorghum hybrids, R. C. Young Oro Txtra and Funks G-550, were planted in June and harvested in October. Grain yields were not significantly different between hybrids (Oro 5.69 t ha−1, Funk 5.67 t ha−1) or between tillage systems (CT 5.59 t ha−1, NT 5.78 t ha−1). Grain yield differences were noted for year × hybrid × tillage interactions. Rape was a weed problem in the sorghum plots. The winter rape-sorghum double-cropping system offers an alternative to current winter small grains-sorghum/soybean (Glycine max (L.) Merr.) or winter annual legume-sorghum/soybean (Glycine max (L.) Merr.) systems; however, markets for the winter rapeseed and production economic analyses are needed prior to adoption of the system. Additional winter rapeseed research is needed to evaluate yields properly under NT conditions.Key words: Sorghum bicolor (L.) Moench, Brassica napus L., conservation tillage, multiple cropping, sorghum, rapeseed

ADAPTATION OF WINTER RAPESEED IN ONTARIO

1987 ◽  
Vol 67 (3) ◽  
pp. 675-684 ◽  
Author(s):  
G. C. BEAULIEU ◽  
D. J. HUME
Keyword(s):  
Brassica Napus ◽  
Field Trials ◽  
Winter Survival ◽  
First Year ◽  
Brassica Napus L ◽  
Northern Ontario ◽  
Cold Temperatures ◽  
The North ◽  
Winter Snow ◽  
Winter Rapeseed

In order to determine regions of adaptation of winter rapeseed (Brassica napus L.), field trials were planted at about 30 locations in Ontario in 1981 and 1982. Four cultivars were tested each year. Winter survival was poor in northern Ontario in both years, and along the north shore of Lake Erie in the first year. Over all sites, mean winter survival was 52%. At sites which did not completely winterkill, plant survival and yield averaged 70% and 2.38 t ha−1. Best winter rapeseed performance in Ontario occurred at well-drained sites with good winter snow cower and an absence of excessive flooding or cold temperatures in the spring. Cultivars did not differ in survival or yield in 1981–1982. The cultivar Jet Neuf had higher yields than the other cultivars in 1982–1983. There were differences in oil and protein content among the cultivars. The results suggest that winter rapeseed could become a viable crop in Ontario.Key words: Rapeseed (winter), Brassica napus, seed yield, winter survival, adaptation

EFFECT OF ROW SPACING AND SEEDING RATES ON SUMMER RAPE IN SOUTHERN MANITOBA

1990 ◽  
Vol 70 (1) ◽  
pp. 127-137 ◽  
Author(s):  
M. J. MORRISON ◽  
P. B. E. McVETTY ◽  
R. SCARTH
Keyword(s):  
Brassica Napus ◽  
Seed Quality ◽  
Plant Density ◽  
Chlorophyll Concentration ◽  
Plant Distribution ◽  
Row Spacing ◽  
Seeding Rate ◽  
Brassica Napus L ◽  
Plant Densities ◽  
Lower Plant

To determine the effects of varying plant densities on summer rape (Brassica napus L.), the cultivar Westar was seeded in 15- and 30-cm row spacings at seeding rates of 1.5, 3.0, 6.0, and 12.0 kg ha−1. Plants seeded in 15-cm rows yielded more per area, produced more pods per plant and lodged less than those in 30-cm rows. Higher yields were associated with a more even plant distribution and a lower degree of intra-row competition. There were no significant protein, oil and chlorophyll concentration differences between the row spacing treatments. The highest yields (kg ha−1) were achieved with the 1.5 and 3.0 kg ha−1 seeding rates. Summer rape compensated for lower plant densities with the production of more branch racemes. As seeding rate increased, competitive mortality increased, resulting in greater etiolation at bolting, and greater lodging at harvest. Seed oil and protein concentrations were not affected by seeding rate. However, seed chlorophyll concentration decreased with increased seeding rate.Key words: Brassica napus, plant density, seed quality, rape (summer)

scholarly journals Polymorphism in spring and winter rapeseed varieties (Brassica napus L.) identified by ssr markers

2018 ◽  
Vol 14 (4) ◽  
pp. 366-374
Author(s):  
О. Л. Кляченко ◽  
Л. М. Присяжнюк ◽  
Н. В. Шофолова ◽  
О. В. Піскова
Keyword(s):  
Brassica Napus ◽  
Ssr Markers ◽  
Brassica Napus L ◽  
Winter Rapeseed
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