Abstract
Abstract Using polymerase chain reaction–denaturing gradient gel electrophoresis (PCR–DGGE) methods, we investigated the effects of seven different crop rotation modes on cucumber rhizosphere soil bacterial communities. The bacterial diversity indexes in three growth periods showed that the diversity and evenness indexes of the kidney bean–celery–cucumber rotation were higher than those of the following rotations: tomato–kidney bean–cucumber, tomato–celery–cucumber, kidney bean–tomato–cucumber, cucumber–kidney bean–cucumber, cucumber–celery–cucumber, cucumber–tomato–cucumber, and cucumber–cucumber–cucumber. DGGE profiles of various rhizosphere soils showed six major bacterial populations: Proteobacteria, Sphingobacteria, Flavobacteria, Actinobacteria, Clostridia, and Acidobacteria. The yield of cucumber in the kidney bean–celery–cucumber rotation was higher than in other crop rotations (p<0.05). Cucumber yield was strongly and positively correlated with soil microorganism diversity index (p<0.01), and was also positively correlated with evenness index (p<0.05). Our results suggest that the kidney bean–celery–cucumber rotation is suitable for cucumber cropping.
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Claims 6
Claim · model-written summary
Kidney bean–celery–cucumber rotation produced higher bacterial diversity and evenness than the other rotations.
- Taxon
- cucumber
Cucumis sativuse0 - Organ / stage
- three growth periodse0
- Treatment
- kidney bean–celery–cucumber rotatione0
- Outcome
- diversity and evenness indexese0
- Direction
- highere0
- Comparator
- following rotationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The bacterial diversity indexes in three growth periods showed that the diversity and evenness indexes of the kidney bean–celery–cucumber rotation were higher than those of the following rotations: tomato–kidney bean–cucumber, tomato–celery–cucumber, kidney bean–tomato–cucumber, cucumber–kidney bean–cucumber, cucumber–celery–cucumber, cucumber–tomato–cucumber, and cucumber–cucumber–cucumber.”
Claim · model-written summary
Rhizosphere DGGE profiles showed six major bacterial populations.
- Taxon
- cucumberCucumis sativust0
- Outcome
- six major bacterial populations: Proteobacteria, Sphingobacteria, Flavobacteria, Actinobacteria, Clostridia, and Acidobacteriae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“and cucumber yields”
e0“DGGE profiles of various rhizosphere soils showed six major bacterial populations: Proteobacteria, Sphingobacteria, Flavobacteria, Actinobacteria, Clostridia, and Acidobacteria.”
Claim · model-written summary
Cucumber yield was higher under kidney bean–celery–cucumber rotation than other rotations.
- Taxon
- cucumberCucumis sativuse0
- Treatment
- kidney bean–celery–cucumber rotatione0
- Outcome
- yield of cucumbere0
- Direction
- highere0
- Comparator
- other crop rotationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The yield of cucumber in the kidney bean–celery–cucumber rotation was higher than in other crop rotations (p<0.05).”
Claim · model-written summary
Cucumber yield was positively correlated with soil microorganism diversity index.
- Taxon
- CucumberCucumis sativuse0
- Outcome
- Cucumber yielde0
- Direction
- positively correlatede0
- Comparator
- soil microorganism diversity indexe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cucumber yield was strongly and positively correlated with soil microorganism diversity index (p<0.01)”
Claim · model-written summary
Cucumber yield was positively correlated with evenness index.
- Taxon
- CucumberCucumis sativuse0
- Outcome
- Cucumber yielde0
- Direction
- positively correlatede0
- Comparator
- evenness indexe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cucumber yield was strongly and positively correlated with soil microorganism diversity index (p<0.01), and was also positively correlated with evenness index (p<0.05).”
Claim · model-written summary
The authors recommend the kidney bean–celery–cucumber rotation for cucumber cropping.
- Taxon
- cucumberCucumis sativuse0
- Outcome
- kidney bean–celery–cucumber rotation is suitable for cucumber croppinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Our results suggest that the kidney bean–celery–cucumber rotation is suitable for cucumber cropping.”
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See all 10 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.