Claim · model-written summary
The population sex ratio of 0.17 significantly deviated from 1:1.
- Taxon
- Rhamnus davurica
Rhamnus davuricat0 - Outcome
- population sex ratioe0
- Direction
- deviatede0
- Value
- 0.17e0
- Comparator
- 1 ∶ 1e0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentSettingQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The population sex ratio of 0.17 deviated significantly from 1 ∶ 1,based on a Chi-square test(P0.001)”
t0“Rhamnus davurica”
Title
Reproductive allocation in dioecious shrub,Rhamnus davurica
Ding Shengjian Acta Ecologica Sinica 2011
Other claims from this paper (19)
- Observation Branch reproductive biomass differed significantly by sex.
- Observation Branch flower biomass differed significantly by sex.
- Observation Branch foliage biomass did not differ significantly by sex.
- Observation Flower, foliage and reproduction biomass differed significantly among individuals.
- Observation Mean female flower biomass was 1.84 times male flower biomass.
- Observation Mean female reproduction biomass was 16 times male reproduction biomass.
- Observation Male foliage biomass exceeded female foliage biomass without a significant difference.
- Observation Shrub flower and reproductive biomass and diameter increment differed significantly by sex.
- Observation Shrub foliage biomass did not differ significantly by sex.
- Association DBH size correlated positively with flower and reproductive and foliage biomass and diameter increment.
- Observation Female shrub flower biomass was 1.6 times male biomass.
- Observation Female shrub reproductive biomass was 1.93 times male biomass.
- Observation Female shrub foliage biomass was 1.1 times male biomass.
- Observation Female diameter increment exceeded male diameter increment by 3.04.
- Observation Males began flowering earlier than females, on 25 May versus 28 May.
- Observation Females began fruiting on 8 June.
- Observation The plot contained 310 female, 53 male and 225 non-reproductive trees in 2010.
- Observation The 0–2, 2–4, 4–6 and 6–8 cm DBH classes had female-biased sex ratios.
- Observation Mean annual ring widths were 0.78 mm for males and 0.83mm for females; authors concluded growth allocation did not follow trade-off theory.