Abstract
A field experiment was conducted at Rice Research Station, Tonekabon, Iran, to determine the effect of N rate on seed yield, protein and oil content of two canola (Brassica napus L.) cultivars. Two canola cultivars ('Hayola-308' and 'RGS-003') and five N rates (0, 50, 100, 150, and 200 kg ha -1 ), organized into a randomized complete block design with a factorial treatment arrangement and three blocks, were applied to plot areas. Results showed that N rate effect was significant (P < 0.01) for seed yield, protein content and yield, and oil yield but not for oil content. On the other hand, cultivar had only significant (P < 0.01) effect on seed protein and oil content. Moreover, the interaction between N rate and cultivar was significant at P < 0.01 for seed, protein and oil yield, illustrating that cultivars showed different responses to N rates for these traits. In general, the quadratic equation provided a good description of the relationship between seed, protein and oil yield and nitrogen rate. For 'Hayola-308', seed, protein and oil yield increased significantly as N application rate increased from 0 to 150 kg ha -1 , but thereafter remained constant. In contrast, for 'RGS-003', seed, protein and oil yield increased significantly as N application rate increased from 0 to 200 kg ha -1 . Therefore, at the highest N application rate (200 kg ha -1 ), 'RGS-003' produced greater seed, protein and oil yield than 'Hayola-308'. Averaged across N application rate, the seed protein content of RGS-003 was significantly (P < 0.01) higher than that of 'Hayola-308', while the opposite result was observed for seed oil content. This study demonstrated the differential response of two canola cultivars to N rate in terms of seed, protein and oil yield.
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Claims 20
Claim · model-written summary
Nitrogen rate significantly affected seed yield.
- Taxon
- canola
.jpg?width=60)
Brassica napus var. napust0 - Treatment
- N ratee0
- Outcome
- seed yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“Results showed that N rate effect was significant (P < 0.01) for seed yield, protein content and yield, and oil yield but not for oil content.”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Nitrogen rate significantly affected protein content.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- N ratee0
- Outcome
- protein contente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results showed that N rate effect was significant (P < 0.01) for seed yield, protein content and yield, and oil yield but not for oil content.”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Nitrogen rate significantly affected protein yield.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- N ratee0
- Outcome
- protein content and yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results showed that N rate effect was significant (P < 0.01) for seed yield, protein content and yield, and oil yield but not for oil content.”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Nitrogen rate significantly affected oil yield.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- N ratee0
- Outcome
- oil yielde0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results showed that N rate effect was significant (P < 0.01) for seed yield, protein content and yield, and oil yield but not for oil content.”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Nitrogen rate did not significantly affect oil content.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- N ratee0
- Outcome
- oil contente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Results showed that N rate effect was significant (P < 0.01) for seed yield, protein content and yield, and oil yield but not for oil content.”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Cultivar significantly affected seed protein content.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- cultivare0
- Outcome
- seed proteine0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cultivar had only significant (P < 0.01) effect on seed protein and oil content.”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Cultivar significantly affected oil content content.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- cultivare0
- Outcome
- oil contente0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cultivar had only significant (P < 0.01) effect on seed protein and oil content.”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Cultivar and nitrogen rate interacted significantly for seed yield.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- N rate and cultivare0
- Outcome
- seede0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the interaction between N rate and cultivar was significant at P < 0.01 for seed, protein and oil yield, illustrating that cultivars showed different responses to N rates for these traits.”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Cultivar and nitrogen rate interacted significantly for protein yield.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- N rate and cultivare0
- Outcome
- proteine0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the interaction between N rate and cultivar was significant at P < 0.01 for seed, protein and oil yield, illustrating that cultivars showed different responses to N rates for these traits.”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Cultivar and nitrogen rate interacted significantly for oil yield.
- Taxon
- canolaBrassica napus var. napust0
- Treatment
- N rate and cultivare0
- Outcome
- oile0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the interaction between N rate and cultivar was significant at P < 0.01 for seed, protein and oil yield, illustrating that cultivars showed different responses to N rates for these traits.”
t0“canola (Brassica napus L.)”
Claim · model-written summary
A quadratic equation described the relation of seed, protein and oil yield to nitrogen rate.
- Taxon
- canolaBrassica napus var. napust0
- Outcome
- good descriptione0
- Comparator
- nitrogen ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the quadratic equation provided a good description of the relationship between seed, protein and oil yield and nitrogen rate.”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Hayola-308 seed yield rose through 150 kg ha -1 nitrogen and then plateaued.
- Taxon
- canolaBrassica napus var. napust0
- Material
- 'Hayola-308'e0
- Treatment
- N application ratee0
- Outcome
- seede0
- Direction
- increasede0
- Qualifier
- thereafter remained constante0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For 'Hayola-308', seed, protein and oil yield increased significantly as N application rate increased from 0 to 150 kg ha -1 , but thereafter remained constant.”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Hayola-308 protein yield rose through 150 kg ha -1 nitrogen and then plateaued.
- Taxon
- canolaBrassica napus var. napust0
- Material
- 'Hayola-308'e0
- Treatment
- N application ratee0
- Outcome
- proteine0
- Direction
- increasede0
- Qualifier
- thereafter remained constante0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For 'Hayola-308', seed, protein and oil yield increased significantly as N application rate increased from 0 to 150 kg ha -1 , but thereafter remained constant.”
t0“canola (Brassica napus L.)”
Claim · model-written summary
Hayola-308 oil yield rose through 150 kg ha -1 nitrogen and then plateaued.
- Taxon
- canolaBrassica napus var. napust0
- Material
- 'Hayola-308'e0
- Treatment
- N application ratee0
- Outcome
- oile0
- Direction
- increasede0
- Qualifier
- thereafter remained constante0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For 'Hayola-308', seed, protein and oil yield increased significantly as N application rate increased from 0 to 150 kg ha -1 , but thereafter remained constant.”
t0“canola (Brassica napus L.)”
Claim · model-written summary
RGS-003 seed yield rose through 200 kg ha -1 nitrogen.
- Taxon
- canolaBrassica napus var. napust0
- Material
- 'RGS-003'e0
- Treatment
- N application ratee0
- Outcome
- seede0
- Direction
- increasede0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for 'RGS-003', seed, protein and oil yield increased significantly as N application rate increased from 0 to 200 kg ha -1 .”
t0“canola (Brassica napus L.)”
Claim · model-written summary
RGS-003 protein yield rose through 200 kg ha -1 nitrogen.
- Taxon
- canolaBrassica napus var. napust0
- Material
- 'RGS-003'e0
- Treatment
- N application ratee0
- Outcome
- proteine0
- Direction
- increasede0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for 'RGS-003', seed, protein and oil yield increased significantly as N application rate increased from 0 to 200 kg ha -1 .”
t0“canola (Brassica napus L.)”
Claim · model-written summary
RGS-003 oil yield rose through 200 kg ha -1 nitrogen.
- Taxon
- canolaBrassica napus var. napust0
- Material
- 'RGS-003'e0
- Treatment
- N application ratee0
- Outcome
- oile0
- Direction
- increasede0
- Comparator
- 0e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“for 'RGS-003', seed, protein and oil yield increased significantly as N application rate increased from 0 to 200 kg ha -1 .”
t0“canola (Brassica napus L.)”
Claim · model-written summary
At 200 kg ha -1 nitrogen, RGS-003 had greater seed yield than Hayola-308.
- Taxon
- canolaBrassica napus var. napust0
- Material
- 'RGS-003'e0
- Treatment
- 200 kg ha -1e0
- Outcome
- seede0
- Direction
- greatere0
- Comparator
- 'Hayola-308'e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the highest N application rate (200 kg ha -1 ), 'RGS-003' produced greater seed, protein and oil yield than 'Hayola-308'.”
t0“canola (Brassica napus L.)”
Claim · model-written summary
At 200 kg ha -1 nitrogen, RGS-003 had greater protein yield than Hayola-308.
- Taxon
- canolaBrassica napus var. napust0
- Material
- 'RGS-003'e0
- Treatment
- 200 kg ha -1e0
- Outcome
- proteine0
- Direction
- greatere0
- Comparator
- 'Hayola-308'e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the highest N application rate (200 kg ha -1 ), 'RGS-003' produced greater seed, protein and oil yield than 'Hayola-308'.”
t0“canola (Brassica napus L.)”
Claim · model-written summary
At 200 kg ha -1 nitrogen, RGS-003 had greater oil yield than Hayola-308.
- Taxon
- canolaBrassica napus var. napust0
- Material
- 'RGS-003'e0
- Treatment
- 200 kg ha -1e0
- Outcome
- oile0
- Direction
- greatere0
- Comparator
- 'Hayola-308'e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at the highest N application rate (200 kg ha -1 ), 'RGS-003' produced greater seed, protein and oil yield than 'Hayola-308'.”
t0“canola (Brassica napus L.)”
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