title: Modeling Allometric Relationships in Leaves of Young Rapeseed (Brassica napusL.) Grown at Different Temperature Treatments.
abstract: Functional-structural plant modeling (FSPM) is a fast and dynamic method to predict plant growth under varying environmental conditions. Temperature is a primary factor affecting the rate of plant development. In the present study, we used three different temperature treatments (10/14°C, 18/22°C, and 26/30°C) to test the effect of temperature on growth and development of rapeseed (Brassica napusL.) seedlings. Plants were sampled at regular intervals (every 3 days) to obtain growth data during the length of the experiment (1 month in total). Total leaf dry mass, leaf area, leaf mass per area (LMA), width-length ratio, and the ratio of petiole length to leaf blade length (PBR), were determined and statistically analyzed, and contributed to a morphometric database. LMA under high temperature was significantly smaller than LMA under medium and low temperature, while leaves at high temperature were significantly broader. An FSPM of rapeseed seedlings featuring a growth function used for leaf extension and biomass accumulation was implemented by combining measurement with literature data. The model delivered new insights into growth and development dynamics of winter oilseed rape seedlings. The present version of the model mainly focuses on the growth of plant leaves. However, future extensions of the model could be used in practice to better predict plant growth in spring and potential cold damage of the crop.
authors.affiliation: Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University Hangzhou, China.
authors.forename: Tian
authors.initials: T
authors.lastname: Tian
authors.affiliation: Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University Hangzhou, China.
authors.forename: Lingtong
authors.initials: L
authors.lastname: Wu
authors.affiliation: Department of Ecoinformatics, Biometrics and Forest Growth, Georg-August University of Göttingen Göttingen, Germany.
authors.forename: Michael
authors.initials: M
authors.lastname: Henke
authors.affiliation: Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang UniversityHangzhou, China; Institute of Crop Science and Resource Conservation, University of BonnBonn, Germany.
authors.forename: Basharat
authors.initials: B
authors.lastname: Ali
authors.affiliation: Institute of Crop Science and Zhejiang Key Laboratory of Crop Germplasm, Zhejiang University Hangzhou, China.
authors.forename: Weijun
authors.initials: W
authors.lastname: Zhou
authors.affiliation: IRHS, INRA, AGROCAMPUS OUEST, University of Angers Beaucouzé, France.
authors.forename: Gerhard
authors.initials: G
authors.lastname: Buck-Sorlin
keywords: GroIMP; allometry; functional–structural plant model (FSPM); growth function; source–sink relations; temperature; winter oilseed rape