期刊
PLANT BIOLOGY
卷 17, 期 -, 页码 33-41出版社
WILEY
DOI: 10.1111/plb.12184
关键词
Biomass production; clonal variation; duckweeds; Lemnaceae; relative growth rate; relative yield; standardised cultivation conditions
Relative growth rates (RGR), doubling times (DT) and relative weekly yields (RY) of 39 clones (ecotypes) from 13 species representing all five genera of duckweeds were determined under standardised cultivation conditions. RGR ranged overall from 0.153 to 0.519day(-1), DT from 1.34 to 4.54days and RY from 2.9 to 37.8week(-1). The RGR and RY data can be compared directly to other published findings to only a limited extent on account of missing clonal designations for and limited accessibility to previously investigated clones, as well as the use of different data denominators. However, they are consistent with the published results of other comparative duckweed studies of similar scope in showing that RGR does not vary primarily at the level of the genus or species, but rather reflects the adaptation of individual clones to specific local conditions. The RGR data support the widely held assumption that duckweeds can grow faster than other higher plants and that they can thus surpass land-based agricultural crops in productivity. Duckweeds are highly promising for the production of biomass for nutrition and energy, but extensive clonal comparison will be required to identify the most suitable isolates for this purpose.
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