LA TENEUR EN CAROTENE DE LA CAROTTE EN ARRIERE SAISON: ETUDE DE QUELQUES FACTEURS DE VARIATION - COMPARAISON DE LA RELATION RENDEMENT/DENSITÉ DE PEUPLEMENT ENTRE DEUX VARIÉTÉS RICHES
A comparaison of two varieties selected for their high carotene content was made on a broad range of crop densities, proceeding plot by plot.
The results confirmed :
- the existence of a root size threshold, beneath which carotene content diminishes;
- the critical of the anatomical separation between the central cylinder (xylem) and the cortical section of the root (phleom) on the storage of a carotene, with major consequences on the sample.
The comparison revealed :
- the great stability of the contribution by these two anatomical parts;
- that differences in carotene content from one variety to another may be largely explained by the different develoopmental stages at which carotene is stored.
Controlling crop density is therefore a key factor in meeting carotene content goals. Differences in nitrogenous fertilization had no effect on the range of varieties studied.
Fleury, A., Roger-Estrade, J. and Tremblay, M. (1994). LA TENEUR EN CAROTENE DE LA CAROTTE EN ARRIERE SAISON: ETUDE DE QUELQUES FACTEURS DE VARIATION - COMPARAISON DE LA RELATION RENDEMENT/DENSITÉ DE PEUPLEMENT ENTRE DEUX VARIÉTÉS RICHES. Acta Hortic. 354, 215-220