Chicor}' has potential as a new industrial crop. However, root chicory-seems to have a limited genetic basis which might hamper breeding progress. The objective of the investigation was (i) to assess the yield potential of chicorj' and (ii) to ascertain whether leaf chicory might be suitable to broaden the genetic basis of root chicory breeding. Fortynine accessions of leaf and root chicorv' were cultivated in field trials. Root yield/plot varied between 15.0 kg and 22.6 kg (experiment 1) and 14.8 kg and 27.0 kg (experiment 2). Total sugar content ranged between 15.2-21.8 % and 14.5-22.9 %. The corresponding values for total sugar yield are 2.32-4.12 kg and 2.38-5.45 kg. Fructose/glucose ratios ranged from 6.59 to 9.76 and 4.20 to 8.22 depending on experiment and accession. Estimated on a plot basis the highest total sugar and fructose yield was achieved by 'Fredonia' (10.6 t/ha and 9.5 t/ ha, respectively). In addition, correlation coefficients between yield components were estimated. The correlation coefficients between total sugar content and total sugar yield ranged from r = 0.62-0.78. The results suggest that leaf chicor)' may not contribute to a rapid breeding progress in root chicor}' within a short period.

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a m b r o t h , ff. K l u d i n g und R. S e e h u b e r " " Am dern Institut f;.r Pflanzenbau und Pjanzenziichtung der Bundesforschungsanstalt f i r Landwirtschaj Braunschweig-Volkenrode (FA L)Mit dem vorliegenden Beitrag werden in skizzenhafter Form Fragen des Olfruchtanbaues als eine der zahlreichen Altemativen zur Erzeugung von Industriegrundstoffen aus nachwachsenden Rohstoffen diskutiert. Das Ergebnis aus dieser Diskussion ist die Erkenntnis, daR fir den 6lfruchtanbau zwar ein weites Artenspektrum verfigbar ist, dessen derzeitige Ertragslei. stungen aber keinen okonomischen Anbau exmoglichen, so daR eine beson ders intensive Fordemg von Zuchtungsforschung und Pflanzenzuchtung notwendig ist.

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