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Lundblad, Josefine, 2019. Estimation of flowering potential and growth pattern on everbearing strawberry Fragaria x ananassa, cv. Favori. Second cycle, A2E. Alnarp: SLU, Dept. of Plant Protection Biology

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Abstract

Flower mapping is a morphological mapping method that can be used in strawberry (Fragaria
x ananassa) plant production to get an insight of the status, numbers and the developmental
stages of flower buds. It is commonly used by nurseries in order to evaluate plant management
techniques to achieve enhanced yield potential over time. In the present study, flower mapping
was tested with an everbearing strawberry cultivar Favori in a greenhouse production system.
In the trial flower mapping was conducted before planting and after the first harvest on two
different batches, planted at two separate dates. This was done to evaluate the applicability of
flower mapping on an everbearing cultivar and to gain experience to benefit future production
of everbearing strawberries in Sweden.
The study showed that the everbearing strawberry cultivar Favori responds to its
cultivation system and surrounding environment. The response was expressed as differences in
the development pattern and in the plant architecture. To help the interpretation of flower
mapping a frequency model was developed summarizing the bud stages and the bud
distribution. The flower mapping performed before planting gave an indication of plant quality
e.g. number of initiated buds and crown size, and helped to predict future flowering and yield
pattern. The second flower mapping conducted after first harvest peak did not predict future
flowering pattern, but gave support for the potential future development by identify initiated
buds and secondary crowns. In conclusion, flower mapping is suggested to be used as a method
to predict potential future inflorescences and to optimize the production of an everbearing
strawberry grown in greenhouse.

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Flower mapping är en metod som används för att på en grundlig nivå analysera
blomsterknoppar och illustrera plantors arkitektur. I jordgubbar (Fragaria x ananassa) görs det
bland annat för att få en uppfattning om framtida plantutveckling och skörd. I detta arbete
testades metoden flower mapping i en remonterande jordgubbssort, som var planterad och
skördades i växthus. I försöket utfördes flower mapping innan plantering och efter första
skörden på två batcher, planterade vid två separata tillfällen. Målet med försöket var att främja
framtida produktion av remonterande jordgubbar i Sverige, genom att skapa en djupare
förståelse för flower mapping och dess användningsområden.
I studien fastställdes det att den remonterande sorten Favori reagerade på sin
omgivande miljö. Detta uttrycktes som variation i plantuppbyggnaden och i tillväxtmönstret
hos de båda batcherna. Att utföra flower mapping innan plantering var bäst om man vill förutspå
framtida blomsterutveckling. Att utföra andra flower mappingen, efter första skörden,
förutspådde inte lika väl utvecklingen av knoppar men kunde användas i andra syften,
tillexempel att utvärdera odlingsmetoder. I studien framgick det att flower mapping med fördel
kan användas för att uppskatta framtida blomning och optimera skörd i remonterande
jordgubbar.

Main title:Estimation of flowering potential and growth pattern on everbearing strawberry Fragaria x ananassa, cv. Favori
Authors:Lundblad, Josefine
Supervisor:Marttila, Salla and Håkansson, Thilda and Tönnberg, Victoria
Examiner:Egan, Paul
Series:UNSPECIFIED
Volume/Sequential designation:UNSPECIFIED
Year of Publication:2019
Level and depth descriptor:Second cycle, A2E
Student's programme affiliation:LY003 Horticultural Science Programme 300 HEC
Supervising department:(LTJ, LTV) > Dept. of Plant Protection Biology
Keywords:Strawberry, everbearing, morphological description, flower mapping, thermophotoperiod, yield, growth, development, yield prognosis
URN:NBN:urn:nbn:se:slu:epsilon-s-15264
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-s-15264
Subject. Use of subject categories until 2023-04-30.:Crop husbandry
Language:English
Deposited On:07 Jan 2020 09:18
Metadata Last Modified:08 Jan 2020 02:01

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