Anne-Marie
Potel
Pre-
and post-harvest assessment of fruit yield and quality for advanced
raspberry selections
Anne Marie
Potel
is
doing a four-month internship at the HRDC which involves comparing
five advanced raspberry selections with four known varieties.
The
research has several aims:
1.
Evaluation of the size and yield of
fruit from harvests conducted twice a week, noting any
disease found on the berries;
2. After the harvest, Anne Marie will
measure a number of characteristics such as epidermis
texture, taste and aroma, colour, shape, pubescence,
adherence to receptacle, cohesiveness of drupelets, size,
shininess, firmness (using a Durofel), and titrable acid
and soluble solid content;
3. She will also conduct post-harvest
conservation tests under three conditions:
a).
Room
temperature: monitoring of juice loss, post-harvest
development of disease (caused mainly by Rhizopus,
Botrytis and Penicillium), and the appearance of the
berries until they are no longer saleable;
b). Monitoring of the same criteria at 4°C
c). Freezing at -20°C and then thawing to measure
juice loss and see if the berries keep their shape or break down
4.
Recording of the characteristics on the “Objective
Description for Raspberry” form, in connection with an application
for plant breeders’ rights, to be published in the Plant Varieties
Journal.
In short, Anne Marie is comparing five advanced
selections with four known varieties in order to promote a new
raspberry variety with promising storage, yield and disease resistance
characteristics.
- Address:
- Anne Marie Potel
Maîtrise Sciences et techniques en Biophysiologie appliquée aux
- productions végétales
Université d'Angers
Faculté des Sciences
2, boulevard Lavoisier
49000 ANGERS
FRANCE
-
- Professor:
Jean Daniel Viemont
The
persons in charge of the training course: Shahrokh Khanizadeh &
Johanne Cousineau
-