Abstract
Pan, X., Caldwell, C. D., Falk, K. C. and Lada, R. 2012. The effect of cultivar, seeding rate and applied nitrogen on Brassica carinata seed yield and quality in contrasting environments. Can. J. Plant Sci. 92: 961–971. The unremitting growth of oilseed demand makes it necessary to explore alternative oilseed crops to meet this requirement. This study evaluated the effects of genotype, seeding rate and nitrogen (N) supply on the seed yield and quality of oilseed Brassica carinata A. Braun in three contrasting environments (Truro, NS, Harrington, PE and Saskatoon, SK). Useful genetic variation in agronomic and seed quality characteristics was found among these 10 B. carinata genotypes and genotype selection requires location specific recommendation. Line 050488EM had consistently good yield in both Nova Scotia and Prince Edward Island, while line 070768EM displayed better yield stability across 2 yr in Saskatchewan. Because of the high degree of compensatory ability to low plant population, maximum seed yield of B. carinata can be achieved over the range from 34 to 114 plants m −2 . No significant difference in oil and protein content of seed due to seeding rates was observed. The linear increase in seed and oil yield with increased N rate up to 150 kg ha −1 indicates that B. carinata is highly responsive to applied N. Increases in N supply resulted in a decrease in oil content and a corresponding increase in protein content in all experiments. In summary, the findings of this study provide convincing evidence of the agronomic adaptation of B. carinata to all three locations.
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Claims 11
Claim · model-written summary
Ten B. carinata genotypes varied in agronomic and seed quality characteristics.
- Taxon
- B. carinata
Brassica carinatae0 - Outcome
- genetic variation in agronomic and seed quality characteristicse0
- Value
- 10e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Useful genetic variation in agronomic and seed quality characteristics was found among these 10 B. carinata genotypes”
Claim · model-written summary
Line 050488EM yielded consistently well in Nova Scotia and Prince Edward Island.
- Taxon
- Brassica carinataBrassica carinatat0
- Material
- Line 050488EMe0
- Outcome
- good yielde0
- Setting
- Nova Scotia and Prince Edward Islande0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Line 050488EM had consistently good yield in both Nova Scotia and Prince Edward Island”
t0“Brassica carinata”
Claim · model-written summary
Line 070768EM showed better yield stability across two years in Saskatchewan.
- Taxon
- Brassica carinataBrassica carinatat0
- Material
- line 070768EMe0
- Outcome
- yield stabilitye0
- Direction
- bettere0
- Qualifier
- across 2 yre0
- Setting
- Saskatchewane0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“line 070768EM displayed better yield stability across 2 yr in Saskatchewan”
t0“Brassica carinata”
Claim · model-written summary
Maximum B. carinata seed yield was achieved from 34 to 114 plants per square metre.
- Taxon
- B. carinataBrassica carinatae0
- Outcome
- seed yielde0
- Direction
- maximume0
- Value
- 34 to 114 plants m −2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maximum seed yield of B. carinata can be achieved over the range from 34 to 114 plants m −2”
Claim · model-written summary
Seeding rate did not significantly alter seed oil content.
- Taxon
- Brassica carinataBrassica carinatat0
- Treatment
- seeding ratese0
- Outcome
- oil and protein content of seede0
- Direction
- No significant differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant difference in oil and protein content of seed due to seeding rates was observed”
t0“Brassica carinata”
Claim · model-written summary
Seeding rate did not significantly alter seed protein content.
- Taxon
- Brassica carinataBrassica carinatat0
- Treatment
- seeding ratese0
- Outcome
- protein content of seede0
- Direction
- No significant differencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant difference in oil and protein content of seed due to seeding rates was observed”
t0“Brassica carinata”
Claim · model-written summary
Seed yield rose linearly with nitrogen rate up to 150 kg ha −1.
- Taxon
- Brassica carinataBrassica carinatat0
- Treatment
- increased N rate up to 150 kg ha −1e0
- Outcome
- seed and oil yielde0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The linear increase in seed and oil yield with increased N rate up to 150 kg ha −1”
t0“Brassica carinata”
Claim · model-written summary
Oil yield rose linearly with nitrogen rate up to 150 kg ha −1.
- Taxon
- Brassica carinataBrassica carinatat0
- Treatment
- increased N rate up to 150 kg ha −1e0
- Outcome
- oil yielde0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The linear increase in seed and oil yield with increased N rate up to 150 kg ha −1”
t0“Brassica carinata”
Claim · model-written summary
Greater nitrogen supply decreased seed oil content.
- Taxon
- Brassica carinataBrassica carinatat0
- Treatment
- Increases in N supplye0
- Outcome
- oil contente0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increases in N supply resulted in a decrease in oil content”
t0“Brassica carinata”
Claim · model-written summary
Greater nitrogen supply increased seed protein content.
- Taxon
- Brassica carinataBrassica carinatat0
- Treatment
- N supplye0
- Outcome
- protein contente0
- Direction
- increasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increases in N supply resulted in a decrease in oil content and a corresponding increase in protein content in all experiments”
t0“Brassica carinata”
Claim · model-written summary
The authors conclude B. carinata is agronomically adapted to all three locations.
- Taxon
- B. carinataBrassica carinatae0
- Outcome
- agronomic adaptation of B. carinata to all three locationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the agronomic adaptation of B. carinata to all three locations”
The same questions in other papers
density · quality: protein · Brassica carinata (Ethiopian mustard)Positive and negative results
1 in the opposite direction
- positive
nitrogen · quality: oil · Brassica carinata (Ethiopian mustard)Positive and negative results
2 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
1 paper more in this group
See all 5 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.