Abstract
Peanut (Arachis hypogaea L.) is capable of establishing an efficient symbiosis with a wide range of rhizobia, nevertheless, the inoculation of this legume is under used due to lack of information on the bacteria naturally established in soils and the agronomic and economic viability of the practice. The aim of this study was to evaluate the diversity and the symbiotic efficiency of peanut rhizobia from a Planosol under different vegetation covers (native vegetation, sugarcane cultivation and fallow after sugarcane cultivation), located in Zona da Mata, Northeast of Brazil. A total of 177 isolates were obtained from peanut nodules, most of them having the characteristic of rapid growth and acidification of the Yeast Mannitol Agar (YMA) medium. The isolates obtained from soil samples with native vegetation cover showed higher relative abundance, higher species richness and greater uniformity of morphological groups of rhizobia. Eighteen isolates were evaluated for their ability to nodulate peanuts, of which 13 have been authenticated and submitted to evaluation of symbiotic efficiency in pots with soil. The isolate 23M showed the best symbiotic performance in pots with soil. In the field, plants inoculated with the isolate 23M showed better performance than non-inoculated plants, in addition to a grain yield (kg ha-1) similar to that of plants inoculated with recommended bacteria or receiving 200 kg ha-1 N. Key words: Bacteria of legume nodules, biological nitrogen fixation, diversity, grain legume, sugarcane field reform.
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Claims 5
Claim · model-written summary
Most peanut nodule isolates grew rapidly and acidified YMA medium.
- Taxon
- peanut
Arachis hypogaeat0 - Interactor
- rhizobiae1symbiont
- Outcome
- rapid growth and acidification of the Yeast Mannitol Agar (YMA) mediume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“most of them having the characteristic of rapid growth and acidification of the Yeast Mannitol Agar (YMA) medium”
e1“The isolates obtained from soil samples with native vegetation cover showed higher relative abundance, higher species richness and greater uniformity of morphological groups of rhizobia”
t0“peanut”
Claim · model-written summary
Native vegetation soil isolates had higher abundance, richness and morphological uniformity.
- Taxon
- peanutArachis hypogaeat0
- Interactor
- rhizobiae0symbiont
- Outcome
- relative abundance, higher species richness and greater uniformity of morphological groups of rhizobiae0
- Direction
- highere0
- Setting
- native vegetation covere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The isolates obtained from soil samples with native vegetation cover showed higher relative abundance, higher species richness and greater uniformity of morphological groups of rhizobia”
t0“peanut”
Claim · model-written summary
Isolate 23M had the best symbiotic performance in soil pots.
- Taxon
- peanutArachis hypogaeat0
- Interactor
- isolate 23Me0symbiont
- Outcome
- best symbiotic performancee0
- Setting
- pots with soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The isolate 23M showed the best symbiotic performance in pots with soil”
t0“peanut”
Claim · model-written summary
Field inoculation with isolate 23M improved plant performance versus no inoculation.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- inoculated with the isolate 23Me0
- Interactor
- isolate 23Me0symbiont
- Outcome
- performancee0
- Direction
- bettere0
- Comparator
- non-inoculated plantse0
- Setting
- fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the field, plants inoculated with the isolate 23M showed better performance than non-inoculated plants, in addition to a grain yield (kg ha-1) similar to that of plants inoculated with recommended bacteria or receiving 200 kg ha-1 N”
t0“peanut”
Claim · model-written summary
Field grain yield with isolate 23M matched recommended bacteria or 200 kg N.
- Taxon
- peanutArachis hypogaeat0
- Treatment
- inoculated with the isolate 23Me0
- Interactor
- isolate 23Me0symbiont
- Outcome
- grain yield (kg ha-1)e0
- Direction
- similar toe0
- Comparator
- plants inoculated with recommended bacteria or receiving 200 kg ha-1 Ne0
- Setting
- fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the field, plants inoculated with the isolate 23M showed better performance than non-inoculated plants, in addition to a grain yield (kg ha-1) similar to that of plants inoculated with recommended bacteria or receiving 200 kg ha-1 N”
t0“peanut”
The same questions in other papers
inoculation · yield · Arachis hypogaea (peanut)Positive and negative results
197 papers in the same direction as this paper · 23 in the opposite direction
- positive
- positive
- no effect
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