A comparative study of Miscanthus floridulus (Labill) Warb and M. transmorrisonensis Fayata: Photosynthetic gas exchange, leaf characteristics and growth in controlled environments
Journal
Annals of Botany
Journal Volume
81
Journal Issue
2
Pages
295-299
Date Issued
1998
Author(s)
Abstract
Abstract null null The relationship between temperature and the distribution ofMiscanthus floridulus(Labill) Warb andM. transmorrisonensisHayata along altitudinal gradients in central Taiwan was examined. Responses of biomass accumulation, leaf characteristics and photosynthetic gas exchange to growth temperature (from 10 to 30 °C) ofM. floridulusfrom an altitude of 390 m and ofM. transmorrisonensisfrom 2700 m were determined. There were differences between the two species in above-ground biomass, CO2uptake characteristics and leaf chlorophyll contents in response to growth temperature. The optimal temperatures for biomass accumulation were 30/25 (day/night temperature) and 25/20 °C forM. floridulusandM. transmorrisonensis,respectively. Light saturated photosynthetic rates (Amax) were largest in plants grown at the optimal temperature. Growth at 15/10 and 10/10 °C compared to the optima reduced accumulated biomass, leaf chlorophyll content and photosynthetic rate in both species with a greater reduction inM. floridulusthan inM. transmorrisonensis.We concluded that growth ofM. floridulusat high altitude is limited by an inability to grow at temperatures lower than 15 °C, whileM. transmorrisonensisis able to grow in chilling temperatures at higher altitudes.
SDGs
Type
journal article