Preliminary studies on the effects of 4-chlorophenoxyacetic acid on the senescence and dehiscence of pods in oil seed rape (Brassica napus L.)

1986 ◽  
Vol 4 (2) ◽  
pp. 169-175 ◽  
Author(s):  
J. A. Picart ◽  
D. G. Morgan
Keyword(s):  
Brassica Napus ◽  
Brassica Napus L ◽  
Oil Seed ◽  
Oil Seed Rape ◽  
Chlorophenoxyacetic Acid

A note on sampling technique for winter oil-seed rape (Brassica napus L.)

1982 ◽  
Vol 99 (1) ◽  
pp. 225-227 ◽  
Author(s):  
D. H. Scarisbrick ◽  
A. Clewer ◽  
R. W. Daniels
Keyword(s):  
Brassica Napus ◽  
Oilseed Rape ◽  
Nitrogen Fertilizer ◽  
Yield Components ◽  
Sampling Technique ◽  
Brassica Napus L ◽  
Plant Weight ◽  
Oil Seed ◽  
Oil Seed Rape ◽  
Sampling Problems

The response of three spring cultivars of oilseed rape to five levels of nitrogen fertilizer (0 to 200 kg/ha) was studied during 1978–9 (Scarisbrick, Daniels & Alcock, 1981). Sampling problems, practical difficulties of measuring yield components, and the high co-efficients of variation for these data were discussed. During the course of further investigations on the winter cultivar Jet Neuf (established on approximately 75000 ha in the U. K. during 1980–1) within-plot variability for plant weight was assessed in order to indicate the size of sample necessary to compare treatment means.

Quantitative analysis of the growth, development and distribution of flowers and pods in oil seed rape (Brassica napus L.)

1975 ◽  
Vol 85 (1) ◽  
pp. 103-110 ◽  
Author(s):  
T. O. Tayo ◽  
D. G. Morgan
Keyword(s):  
Quantitative Analysis ◽  
Brassica Napus ◽  
Growth And Development ◽  
Brassica Napus L ◽  
Flower Opening ◽  
Oil Seed ◽  
Oil Seed Rape ◽  
Whole Plant ◽  
Growth Development

SUMMARYThe growth and development of single plants of oil seed rape, variety Zollerngold, are described quantitatively and particular attention paid to the sequence and pattern of flower and pod production on the different inflorescences. The period of flower opening over the whole plant spanned an average of 26 days and more than 75% of the pods which were retained to maturity were formed from flowers which opened within 14 days of anthesis. Most of these flowers were found on the terminal raceme and on the basal and middle regions of the axillary inflorescences arising from the uppermost three nodes.

Stability of Yield Components from Winter Oil-Seed Rape (Brassica napus L.)

1987 ◽  
Vol 158 (2) ◽  
pp. 107-113 ◽  
Author(s):  
H.-P. Sierts ◽  
G. Geisler ◽  
J. Leon ◽  
W. Diepenbrock
Keyword(s):  
Brassica Napus ◽  
Yield Components ◽  
Brassica Napus L ◽  
Oil Seed ◽  
Oil Seed Rape

Compensation of oil-seed rape (Brassica napus L.) plants after damage to their buds and pods

1979 ◽  
Vol 92 (1) ◽  
pp. 53-59 ◽  
Author(s):  
Ingrid H. Williams ◽  
J. B. Free
Keyword(s):  
Brassica Napus ◽  
Yield Loss ◽  
Plant Size ◽  
Meligethes Aeneus ◽  
Brassica Napus L ◽  
Oil Seed ◽  
Oil Seed Rape ◽  
Early Removal ◽  
The Relationship ◽  
Pollen Beetles

SummaryThe relationship has been investigated between the yield of oil-seed rape (Brassica napus L.) plants and (a) the proportion of podless stalks, (b) the proportion of pods infested by seed weevil larvae and (c) the effect of removing a proportion of buds and pods. Plants compensated for damage and, although late removal of buds or pods sometimes caused greater yield loss than early removal, only plants with more than 60% podless stalks or buds removed had diminished yields. The numbers of podless stalks per plant increased with plant size. Removal of 60 % of a plant's pods caused no yield loss; in the field a maximum infestation of only 25% of the plant's pods with seed weevil larvae occurred. The results are discussed in relation to damage by pollen beetles (Meligethes aeneus Fab.) and seed weevils (Ceutorhynch.ua ossimilis Payk.)

Effect of some Herbicides on Oil Seed Rape (Brassica Napus L.) and Associated Weeds

1987 ◽  
Vol 158 (4) ◽  
pp. 236-240 ◽  
Author(s):  
A. F. Ibrahim ◽  
Sh. A. Shaban ◽  
El. A. El-Metwally
Keyword(s):  
Brassica Napus ◽  
Brassica Napus L ◽  
Oil Seed ◽  
Oil Seed Rape

scholarly journals Application of glutathione and dithiothreitol to oil seed rape (Brassica napus L.) roots affects cadmium distribution in roots and inhibits Cd translocation to shoots

2016 ◽  
Vol 62 (4) ◽  
pp. 379-385 ◽  
Author(s):  
Shin-ichi Nakamura ◽  
Nobuo Suzui ◽  
Sayuri Ito-Tanabata ◽  
Satomi Ishii ◽  
Naoki Kawachi ◽  
...  
Keyword(s):  
Brassica Napus ◽  
Brassica Napus L ◽  
Oil Seed ◽  
Oil Seed Rape ◽  
Cd Translocation

Compensation in spring-sown oil-seed rape (Brassica napus L.) plants in response to injury to their flower buds and pods

1983 ◽  
Vol 101 (3) ◽  
pp. 565-573 ◽  
Author(s):  
G. M. Tatchell
Keyword(s):  
Brassica Napus ◽  
Apical Dominance ◽  
Seed Weight ◽  
Current Control ◽  
Flower Buds ◽  
Brassica Napus L ◽  
Field Surveys ◽  
Oil Seed ◽  
Oil Seed Rape ◽  
Bud Removal

SUMMARYThe extent and possible mechanism by which spring-sown oil-seed rape plants can compensate for insect or artificial injury to flower buds and pods were investigated by examination of the yield, and its components, of plants collected from commercial fields and those grown in field cages and glasshouses. Plants were able to compensate and in some instances overcompensate for all observed levels of M. aeneus injury or artificial bud removal by the production of more axillary racemes, which may be due to the loss of apical dominance. Artificial injury to the pods or infestation by C. assimilis larvae did not result in a significant reduction in the yield of seed and was compensated for partly by a slight increase in the number of axillary racemes and by slight increases in the number of pods on each axillary raceme and in the 1000-seed weight, and resulted mainly from the diversion of nutrients to other yield-bearing organs. Injury by D. brassicae larvae was partly compensated for in 1975 and at lower injury levels in 1974 and involved a similar mechanism to compensation for C. assimilis injury. These results are discussed in relation to the observed infestation levels in field surveys and current control practices.

The effect of drilling date on the growth and yield of oil-seed rape (Brassica napus L.)

1987 ◽  
Vol 108 (1) ◽  
pp. 195-200 ◽  
Author(s):  
P. J. W. Lutman ◽  
Fiona L. Dixon
Keyword(s):  
Brassica Napus ◽  
Seed Yield ◽  
Dry Weight ◽  
Early Summer ◽  
Growth And Yield ◽  
Practical Significance ◽  
Brassica Napus L ◽  
Oil Seed ◽  
Oil Seed Rape ◽  
Autumn And Winter

SummaryThe effects of drilling date (18 August–22 September) on the growth and yield of oil-seed rape (Brassica napus) was studied in a series of five experiments over three seasons. Autumn and winter growth of the crop, as measured by dry weight of tops and leaf area, was severely reduced by delayed drilling, especially if it was later than 10 September. However, during the spring and early summer the differences in crop weight due to drilling date declined and in four of the five experiments there were no detectable differences in seed yield between early- and late-sown crops. The yield decline in the fifth trial was small. Measurements of components of yield showed that later-sown crops had fewer pods per plant and slightly smaller seeds but apparently more seeds per pod. The practical significance and reasons for the recovery of late drilled crops from early poorer growth are discussed.

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