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Content archived on 2024-04-15

GENETIC IMPROVEMENT AND MULTI-SITE EXPERIMENT ON THE YIELD CAPACITY OF THE JERUSALEM ARTICHOKE.

Objective



THE MULTI-SITE EXPERIMENT WILL BE IN TWO PARTS:

1.- EXPERIMENT ON USEFUL BIOMASS WITH SEVERAL CLONES DEPENDING ON SITE (STUDY OF 10 CULTIVARS).
THE FIRST PART WILL BE THE SUBJECT OF TEST A:
- COMPARATIVE STUDY OF THE CLONES
- FIVE-REPEAT FISHER BLOCKS
- GROWING TECHNIQUES: THE BEST CURRENTLY KNOWN, DRY-ZONE IRRIGATION
- ESTIMATE OF TUBER YIELD, DRY MATTER AND USEFUL PRODUCT (GLUCIDE CONTENT).
BIOLOGICAL MATERIAL:
- TWO EARLY CLONES: EARLY WHITE AND C13
- EIGHT LATE CLONES: FUSEAU 60 - RENNES VIOLET - NAHODKA-K8 - RIJSKI - KIEVSKI WHITE - C219 AND C123.

2.- PHYSIOLOGICAL ANALYSIS OF MEANS OF IMPROVEMENT OF THE YIELD ACCORDING TO THE CLIMATE AND THE PERIODICITY OF THE CULTIVAR (STUDY ON TWO VARIETIES). THE SECOND PART WILL BE THE SUBJECT OF TEST B:
- STUDY OF THE COMPARATIVE DEVELOPMENT OF STOLON-TUBER GROWTH
- ANALYSIS BY MEANS OF STAGGERED SAMPLING OF THE DEVELOPMENT OF THE DRY MATERIAL AND GLUCIDES, CHARACTERIZATION OF THE VEGETATION (FOLIAR INDEX, FLOXERING, CAULINE GROWTH, ETC...)
BIOLOGICAL MATERIAL: EARLY WHITE AND RENNES VIOLET.

THE YIELD CAPACITY STUDY WILL BE BASED ON CURRENT KNOWLEDGE CONCERNING THE PHYSIOLOGY OF THE IMPROVEMENT OF THE USEFUL YIELD.

THE YIELD CAPACITY OF THE LATE VARIETIES OF JERUSALEM ARTICHOKE AND THE ROLE OF CLIMATE ON THE VARIATION OF THE YIELD COMPONENTS WILL BE STUDIED AS THE EXPERIMENT IS BEING EXTENDED TO COVER A LARGER CLIMATIC AREA..

THE EXPERIMENTAL SITES WILL BE THE FOLLOWING (TESTS A AND B):
- 40 DEGREES LATITUDE NORTH: SPAIN (MADRID).
- 40 TO 45 DEGREES LATITUDE NORTH: ITALY (PERUGIA) - SOUTH OF FRANCE (TOULOUSE)
- 45 TO 50 DEGREES LATITUDE NORTH: NORTHER AND WESTERN FRANCE (RENNES-VERSAILLES)
- 50 TO 52 DEGREES LATITUDE NORTH: WEST GERMANY (BRAUNSCHWEIG).

THE RESULTS WILL BE INTERPRETED IN THE LIGHT OF A PRODUCTION MODEL PREVIOUSLY DEVELOPED BY THE GRIGNON BIOCLIMATOLOGY LABORATORY AND THE RENNES AGRONOMICS LABORATORY.

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Coordinator

INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE
EU contribution
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Address
Rue de Saint-Brieuc 65
35042 Rennes
France

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