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@PHDTHESIS{He:894587,
author = {He, Fang},
title = {{E}ffects of root temperature on food quality of
horticultural crops},
volume = {547},
school = {Universität Bonn},
type = {Dissertation},
address = {Jülich},
publisher = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
reportid = {FZJ-2021-03294},
isbn = {978-3-95806-565-9},
series = {Schriften des Forschungszentrums Jülich. Reihe Energie
$\&$ Umwelt / Energy $\&$ Environment},
pages = {V, 143 S.},
year = {2021},
note = {Universität Bonn, Diss., 2021},
abstract = {Different from ambient temperature, root temperature is
convenient and economical to manage and control, especially
with the development of greenhouse. Understanding the
effects of root temperature on plant growth and key food
components of horticultural crops under greenhouse
conditions is important because of its high economic
interest. In Chapter 2,3 and 4, growth and food quality
(sugar, antioxidants and minerals) of cocktail
tomato($\textit{Lycopersicon esculentum}$ cv “Amoroso”
and cv “Delioso”) and Chinese broccoli
($\textit{Brassica oleracea}$ var. $\textit{alboglabra}$ cv
“Cuimei”) under different root temperature treatments
were investigated. For cocktail tomatoes, reductions of
marketable yield per plant in both cultivars were observed
in response to root cooling (10°C) in winter, but not
significantly in summer, compared to control group
(16-27°C). In most cases, root cooling had a positive
effect on the sensory and nutritional quality (sugars,
vitamin C and carotenoids levels) of cocktail tomatoes.
Specifically, 'Delioso' showed an increase in glucose,
vitamin C and lycopene concentration of the fruits after
root cooling in both seasons, while 'Amoroso' exhibited only
higher consistent values in glucose levels. For Chinese
broccoli, low root temperature (10 and 15°C) was in general
associated with a higher concentration of soluble sugars,
total chlorophyll and glucosinolates, but lower mineral
levels in stems and leaves than the control group (20°C),
regardless of the treatment duration. The yield was reduced
with root cooling, but shortening the cooling treatment
alleviated this reduction, especially in summer.
Manipulation of root temperature could be a feasible method
to improve the overall food quality of cocktail tomatoes and
Chinese broccoli. However, this effect is dependent on
cultivars and other environmental factors.},
cin = {IBG-2},
cid = {I:(DE-Juel1)IBG-2-20101118},
pnm = {2171 - Biological and environmental resources for
sustainable use (POF4-217)},
pid = {G:(DE-HGF)POF4-2171},
typ = {PUB:(DE-HGF)3 / PUB:(DE-HGF)11},
urn = {urn:nbn:de:0001-2021091508},
url = {https://juser.fz-juelich.de/record/894587},
}