Claim · model-written summary
Layer LAI and upward accumulated LAI of early and late rice were greater at booting stage than at 12 d after heading.
- Taxon
- rice
Oryza sativat0 - Organ / stage
- booting stagee0
- Outcome
- layer leaf area index (LAI) and upward accumulated LAIe0
- Direction
- greatere0
- Comparator
- 12 d after headinge0
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleTreatmentSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The layer leaf area index (LAI) and upward accumulated LAI of early and late rice were greater at booting stage than at 12 d after heading”
t0“double cropping rice”
Title
Yan-Da LI; Jun-Bao HUANG; Chun YE; et al. ACTA AGRONOMICA SINICA 2019. doi:10.3724/sp.j.1006.2019.92005
Other claims from this paper (13)
- Intervention effect Increasing nitrogen rate significantly increased plant height, ear length and leaf length of double cropping rice.
- Intervention effect Increasing nitrogen rate significantly increased basic leaf angle of double cropping rice.
- Observation Layer LAI was greater in mid canopy than in upper and basal canopy.
- Observation The maximum layer LAI appeared at 0.58 of relative canopy height.
- Intervention effect Layer LAI and upward accumulated LAI in upper and mid canopy increased with increasing nitrogen rate.
- Method / resource The distribution of upward accumulated LAI with relative height followed a sigmoid curve described by a Logistic equation (R2 > 0.99).
- Observation Canopy IPAR of early and late rice was greater at booting stage than at 12 d after heading.
- Intervention effect Canopy IPAR of early and late rice increased with increasing nitrogen rate.
- Observation Diurnal variation of IPAR was smaller at noon than in the morning and afternoon.
- Association Lower canopy IPAR was observed for the compact plant type of early and late rice cultivars.
- Method / resource The relationship between canopy IPAR and downward accumulated LAI was described by IPAR = a (1-e-b×LAI) (R2 > 0.88).
- Observation On the horizontal plane, IPAR was smaller and light fleck variation was greater in upper and mid canopy than in basal canopy.
- Observation IPAR at the same canopy height was non-uniform on the horizontal plane.