Abstract
Time course of symbiotic N2-fixing and photosynthetic activities during vegetative growth from 30 d after plantation until pod set was measured in the CB5 and 7964 cowpea [Vigna unguiculata (L.) Walp.] genotypes of contrasting senescence traits. At emergence, seedlings were inoculated with a "non-cowpea miscellany" Rhizobium strain generally used to inoculate Cicer arietinum. Maximum N2-fixing activity occurred in inoculated CB5 and 7964 plants about 54 and 68 d after plantation, respectively. A similar temporal shift of maximum was found for net photosynthetic rate (P N), confirming a good coordination between the two processes. A higher P N was found from the first measurements in inoculated plants of both genotypes as compared with uninoculated plants. Apparently, the maximum activity of both N2-fixation and P N was timed to occur at a particular stage of plant ontogeny correlating the high N supply with the high N demand by the plant. Rhizobium inoculation did not significantly affect partitioning coefficients of biomass to various plant organs but extended leaf longevity by about 10 d in the CB5 genotype, retarding thus the monocarpic senescence.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Inoculated CB5 reached maximum N2 fixation about 54 days after planting.
- Taxon
- cowpea
Vigna unguiculatae1 - Material
- CB5e0
- Treatment
- inoculatede0
- Outcome
- Maximum N2-fixing activitye0
- Value
- 54e0
RhizobiumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum N2-fixing activity occurred in inoculated CB5 and 7964 plants about 54 and 68 d after plantation, respectively.”
e1“cowpea [Vigna unguiculata (L.) Walp.] genotypes”
e2“Rhizobium strain”
Claim · model-written summary
Inoculated 7964 reached maximum N2 fixation about 68 days after planting.
- Taxon
- cowpeaVigna unguiculatae1
- Material
- 7964e0
- Treatment
- inoculatede0
- Outcome
- Maximum N2-fixing activitye0
- Value
- 68 de0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Maximum N2-fixing activity occurred in inoculated CB5 and 7964 plants about 54 and 68 d after plantation, respectively.”
e1“cowpea [Vigna unguiculata (L.) Walp.] genotypes”
e2“Rhizobium strain”
Claim · model-written summary
Maximum net photosynthetic rate showed a similar temporal shift.
- Taxon
- cowpeaVigna unguiculatae1
- Outcome
- net photosynthetic ratee0
- Qualifier
- similar temporal shift of maximume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A similar temporal shift of maximum was found for net photosynthetic rate (P N)”
e1“cowpea [Vigna unguiculata (L.) Walp.] genotypes”
e2“Rhizobium strain”
Claim · model-written summary
Inoculated plants of both cowpea genotypes had higher net photosynthetic rates than uninoculated plants.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- inoculated plantse0
- Outcome
- P Ne0
- Direction
- highere0
- Comparator
- uninoculated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A higher P N was found from the first measurements in inoculated plants of both genotypes as compared with uninoculated plants.”
e1“cowpea [Vigna unguiculata (L.) Walp.] genotypes”
e2“Rhizobium strain”
Claim · model-written summary
Rhizobium inoculation did not significantly affect biomass partitioning coefficients.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- Rhizobium inoculatione0
- Outcome
- partitioning coefficients of biomass to various plant organse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rhizobium inoculation did not significantly affect partitioning coefficients of biomass to various plant organs”
e1“cowpea [Vigna unguiculata (L.) Walp.] genotypes”
Claim · model-written summary
Rhizobium inoculation extended CB5 leaf longevity by about 10 days.
- Taxon
- cowpeaVigna unguiculatae2
- Material
- CB5e0
- Treatment
- Rhizobium inoculatione1
- Outcome
- leaf longevitye0
- Direction
- extendede0
- Value
- 10 de0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“extended leaf longevity by about 10 d in the CB5 genotype, retarding thus the monocarpic senescence.”
e1“Rhizobium inoculation did not significantly affect partitioning coefficients of biomass to various plant organs but extended leaf longevity by about 10 d in the CB5 genotype”
e2“cowpea [Vigna unguiculata (L.) Walp.] genotypes”
Claim · model-written summary
Maximum N fixation and photosynthesis appeared timed to plant ontogeny and coordinated N supply with demand.
- Taxon
- cowpeaVigna unguiculatae1
- Outcome
- maximum activity of both N2-fixation and P Ne0
- Qualifier
- particular stage of plant ontogenye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Apparently, the maximum activity of both N2-fixation and P N was timed to occur at a particular stage of plant ontogeny correlating the high N supply with the high N demand by the plant.”
e1“cowpea [Vigna unguiculata (L.) Walp.] genotypes”
The same questions in other papers
Rhizobium · growth · Vigna unguiculata (cowpea)Positive and negative results
2 papers in the same direction as this paper · 26 in the opposite direction
- positive
- positive
- positive
25 papers more in this group
See all 29 papers →Rhizobium · pest · Vigna unguiculata (cowpea)Results agree
1 paper in the same direction as this paper
- positive
inoculation · pest · Vigna unguiculata (cowpea)Positive and negative results
5 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
3 papers more in this group
See all 7 papers →inoculation · Rhizobium · Vigna unguiculata (cowpea)Positive and negative results
16 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
14 papers more in this group
See all 18 papers →inoculation · growth · Vigna unguiculata (cowpea)Positive and negative results
9 papers in the same direction as this paper · 92 in the opposite direction
- positive
- positive
- positive
98 papers more in this group
See all 102 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.