Revealing the Complex Relationship Among Hyperspectral Reflectance, Photosynthetic Pigments, and Growth in Norway Spruce Ecotypes
Author
HejtmÁnek, Jakub
Stejskal, Jan
Čepl, Jaroslav
Publication date
2022Published in
Frontiers in Plant ScienceVolume / Issue
13 (May)ISBN / ISSN
ISSN: 1664-462XMetadata
Show full item recordCollections
This publication has a published version with DOI 10.3389/fpls.2022.721064
Abstract
Norway spruce has a wide natural distribution range, harboring substantial physiological and genetic variation. There are three altitudinal ecotypes described in this species. Each ecotype has been shaped by natural selection and retains morphological and physiological characteristics. Foliar spectral reflectance is readily used in evaluating the physiological status of crops and forest ecosystems. However, underlying genetics of foliar spectral reflectance and pigment content in forest trees has rarely been investigated. We assessed the reflectance in a clonal bank comprising three ecotypes in two dates covering different vegetation season conditions. Significant seasonal differences in spectral reflectance among Norway spruce ecotypes were manifested in a wide-ranging reflectance spectrum. We estimated significant heritable variation and uncovered phenotypic and genetic correlations among growth and physiological traits through bivariate linear models utilizing spatial corrections. We confirmed the relative importance of the red edge within the context of the study site's ecotypic variation. When interpreting these findings, growth traits such as height, diameter, crown length, and crown height allowed us to estimate variable correlations across the reflectance spectrum, peaking in most cases in wavelengths connected to water content in plant tissues. Finally, significant differences among ecotypes in reflectance and other correlated traits were detected.
Keywords
Norway spruce [Picea abies (L.) H. Karst], hyperspectral reflectance, chlorophyll, ecotypes genetic variation, genetic correlation, broad-sense heritability
Permanent link
https://hdl.handle.net/20.500.14178/1949License
Full text of this result is licensed under: Creative Commons Uveďte původ 4.0 International