Claim · model-written summary
Until day 17, increased shoot weight nearly equalled decreased ear weight after floret removal.
- Taxon
- barley
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Hordeum vulgaret0 - Outcome
- weight of the shoot of the plante0
- Direction
- increasee0
- Qualifier
- nearly equalled the decrease in ear weighte0
Verbatim
e0“until then the increase in weight of the shoot of the plant nearly equalled the decrease in ear weight”
e1“17 days after the ears emerged”
t0“The Effect of Removing Florets or Shading the Ear of Barley on Production and Distribution of Dry Matter”
Title
J. NÕSBERGER; GILLIAN N. THORNE Annals of Botany 1965. doi:10.1093/oxfordjournals.aob.a083977
Other claims from this paper (11)
- Intervention effect Removing half the barley florets increased dry weight of the rest of the plant.
- Observation The dry weight effect of floret removal was greatest 17 days after ear emergence.
- Observation Later, shoot weight differences between 24 and 12 florets per ear disappeared.
- Mechanism The authors attributed the later disappearance of shoot differences to respiration of extra labile carbohydrate.
- Observation Floret removal had similar effects in unshaded plants and plants with shaded ears or shoots.
- Intervention effect Removing florets did not affect barley net assimilation rate.
- Intervention effect Removing florets slightly increased flag-leaf photosynthesis 10 to 17 days after ear emergence.
- Intervention effect Shading the ear decreased weight of the rest of the plant.
- Intervention effect Shading decreased ear weight at every sampling, especially little when florets were removed.
- Mechanism The authors conclude that ear sink size affects carbohydrate movement from the shoot.
- Method / resource The result invalidates some methods for estimating ear photosynthesis.