Claim · model-written summary
Cultivars differed in how plant density affected nitrogen fixation and nodule development.
- Taxon
- Phaseolus vulgaris L.
Phaseolus vulgarist0 - Material
- Three cultivars of P. vulgarise0
- Treatment
- plant densitye0
- Outcome
- nitrogen (C 2 H 2 ) fixation and nodule developmente0
Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingDirectionValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Phaseolus vulgaris L.”
e0“Three cultivars of P. vulgaris , tested 39 and 69 days after planting, differed in the extent to which nitrogen (C 2 H 2 ) fixation and nodule development were affected by plant density.”
Title
P. H. Graham; J. C. Rosas The Journal of Agricultural Science 1978. doi:10.1017/s0021859600048553
Other claims from this paper (10)
- Association At 39 days, P590 fixation fell from 15·1 to 4·2 μmol C 2 H 4 produced/plant/h as density rose from 8·5 to 41·5 plants/m 2.
- Association P498 fixation remained high across densities from 8·5 to 41·5 plants/m 2.
- Association Variation in fixation was largely explained by nodule weight changes.
- Observation Specific nodule activity changed, particularly for P590.
- Association In two varieties, soluble carbohydrate percentage in nodules increased at some densities while specific nodule activity decreased.
- Association Plant density affected leaf, root and stem development, especially lower-node leaves.
- Observation At 69 days, two pod-filling varieties had poor nodulation even at the widest spacings.
- Observation At 69 days, two pod-filling varieties had limited fixation even at the widest spacings.
- Observation The just-flowered third variety retained nodulation optima similar to those at the earlier harvest.
- Observation The just-flowered third variety retained fixation optima similar to those at the earlier harvest.