| Florian Bégard
is currently in a three-month internship at the
Horticultural Research and Development Centre in
Saint-Jean-sur-Richelieu, Quebec. He is a member
of Shahrokh Khanizadeh’s research team studying
the genetic and physiological improvement of
small fruits. He has a bachelor of science and
is currently a second-year student in the
university diploma of technology in biological
engineering (agronomy) program at Amiens
Technical College. He wants to pursue
engineering training at the Institut National
d'Horticulture (INH) in Angers.
Summary of objectives of
the work: In order to determine which of a
wide variety of strawberry plants are the most
resistant to spring freeze and a gradual drop in
outside temperatures, Florian monitors the
chlorophyll fluorescence in addition to a range
of visual damages as indicators of resistance to
low temperatures. Indeed, there seems to be a
correlation between the evolution of chlorophyll
fluorescence and damage observed on the leaves.
He must accordingly measure the chlorophyll
fluorescence and take note of visually apparent
damages observed on the leaves following a
gradual drop in outside temperatures (25°C to
15°C in 14 hours). Measurements are also taken
at 5°C, 0°C, -1°C, -2°C and -3°C (drop of 1°C
every 24 hours starting from 0°C).
This method of measurement applied to these
various cultivars will make it possible to
expand the genetic selection plan by grading the
plants based on their resistance to spring
freeze and their adaptation to cold. This
criterion could accordingly be taken into
account before future cross-breeding and even in
the development of plantlets to eliminate those
that seem the most sensitive to low temperatures.
Address
:
Florian
BÉGARD
IUT d'Amiens
Avenue des facultés
80000 AMIENS
flob2007@hotmail.fr
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The
person in charge of the training course: Shahrokh Khanizadeh
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