What's happening at IRRI

CESD Seminar

Tuesday, December 01, 2015, 01:15pm - 02:15pm


Digital rice plant architecture: measurement, reconstruction,
traits extraction and application

Xumeng Li
Visiting Scientist at IRRI
Associate Professor at
HUNAN Agricultural University

Abstract. Characterization of geometric structure of rice canopy is challenging in structural-functional plant modeling. It informs on the design of plant-architecture ideotypes. This study developed a technique system for measurement, reconstruction and trait extraction of rice canopy architecture. Data collection was based on location-separation-measurement-method and on image analyses. Reconstruction of 3D digital architecture of rice canopy was done from the collected data. Virtual blade method was used to extract key traits of canopy architecture from the 3D digital architecture, such as leaf area, inclination and azimuth distribution in spatial coordinates. Several quantitative indexes were also developed to describe the plant compact degree. The influence of varieties, water and nitrogen management on the variability of these indexes was analysed and the correlation of eight structural indexes with biomass accumulation were modelled.


Rm A, Umali Bldg