Abstrakt
An artichoke is a commonly cultivated vegetable in the Mediterranean region. It is cultivated for an immature flower head. In Poland the artichoke is cultivated as an annual plant because of its high temperature demands. It is difficult to determine the most optimal harvest stage and the most often it is based on expensive chemical analysis. In the years 2007–2009 there was a research undertaken to specify the most optimal harvest stage of flower heads. In order to determine a development stage of head the height of flower bud in the middle part of the receptacle was measured directly after harvest. The unit weight of each head, the level of bracts deflection, content of dry weight, L-ascorbic acid, raw protein, raw fibre and total sugars in whole heads and their fractions: receptacle and bracts were determined. On the basis of obtained results it was stated that the size of flower buds on an inflorescence axis is a sign of full synchronization of head development
and changing environmental conditions during artichoke vegetation. The edible part of artichoke, a receptacle, had more dry weight, total sugars, L-ascorbic acid and raw protein and less raw fibre in comparison to inner bracts. The increase of flower buds height on receptacle was accompanied with the increase of dry weight, raw fibre and total sugars content in heads and its fractions. The longer flower buds in the middle part of inflorescence the lower content of total protein in whole heads and bracts and the higher content of this component in receptacle. It was stated that the size of flower buds was negatively correlated with content of L-ascorbic acid as with the increase of flower buds height in receptacle the content of L-ascorbic acid in whole heads and it’s fractions decreased. The obtained
results show that the level of bracts deflection may the selection indicator to determine harvest maturity. This feature of artichoke head allows to visually determine its harvest usability. Receptacles of Symphony content more dry matter, total protein and less total sugars than those of Madrigal. Intermediate values were found in Symphony and Madrigal for L-ascorbic acid and crude fibre.
Bibliografia
Arce P., López B., Macua J.I., Lahoz I., 2004. Agronomic behaviour of four clones of artichoke (Cynara scolymus L.) in three cycles of production and three different plantings over three consecutive years: the importance of the autumn crop. Acta Hort. 660, 105–109.
Bianco V.V., 2005. Present situation and future potential of artichoke in the Mediterranean basin. Acta Hort. 681, 39–55.
Bianco V.V., 2007. Present and prospect of utilization of fresh and processed artichoke. Acta Hort. 630, 23–37.
Bonasia A., Conversa G., Lazzizera C., Gambacorta G., Elia A., 2010. Morphological and qualitative characterization of globe artichoke head from new seed-propagated cultivars. J. Sci. Food Agric. 90, 2689–2693.
Bućan L., Goreta S., Perica S., 2005. Influence of transplant age and type growth and yield of seed propagated o globe artichoke. Acta Hort. 681, 95–98.
Cantore V., Bianco V.V., Boari F., Prencipe P., 2005. Influence of climate and cultural practices on yield and earliness of artichoke in Foggia and Brindisi provinces. Acta Hort. 681, 283–288.
Di Venere D., Linsalata B., Calabrese N., Pieralice M., Bianco V.V., Lattanzio V., 2005. Morphological and biochemical changes during growth and development of artichoke buds. Acta Hort. 681, 437–443.
Esteva J., Ayala C., Martínez Tomé J., 2004. Effect of gibberellic acid on earliness production of hybrid and open pollinated cultivars of globe artichoke in the Campo de Cartagena (Spain). Acta Hort. 660, 161–166.
Ferreyra R.M., Mugridge A., Chaves A.R., 2005. Total phenols and sugars distribution in the inflorescence of two artichoke varieties. Effect of refrigerated storage. Acta Hort. 681, 537–544.
Foury C., 2003. Artichauts et cardons. [in: Histories de legumes. Pitrat M., Foury C.] INRA, Paris, 189–201.
Foury C., Pecaut P., 1988. Quelques aspects du développement de l’artichaut (Cynara scolyms L.): probléms posés par la substition de la reproducion sexuée á la multiplication végétative. C.R. Acad. Agric. Fr. 74, 85–92.
Ierna A., Mauromicale G., Licandro P., 2004. Head growth of globe artichoke are influenced by genotype and time of head initiation. Acta Hort. 660, 345–351.
Macua J.I., Lahoz I., Malumbres A., Bozal J.M., 2004. Agricultural behaviour of artichokes at different planting periods in Navarra. Acta Hort. 660, 293–297.
Mauromicale G., Raccuia S.A., 2000. Influence of maturation time on some head characteristics of globe artichoke (Cynara scolymus L.). Acta Hort. 533, 483–488.
Mauromicale G., Raccuia S.A., Cavallaro V., 2000. Head characteristics of globe artichoke (Cynara scolymus L.) as related to growth stage. Acta Hort. 533, 557–565.
Mauromicale G., Licandro P., Ierna A., Morello N., Santoiemma G., 2004. Planning of globe artichoke plantlets production in nursery. Acta Hort. 660, 279–284.
Melilli M.G., Raccuia S.A., Patané C., 2004. Genetic and environmental influence on some carbohydrates content in globe artichoke [Cynara cardunculus L. subsp. scolymus (L.) Hegi.]. Acta Hort. 660, 123–129.
Raccuia S.A., Melilli M.G., Tringali S., 2004. Genetic and environmental influence on inulin yield in wild cardoon (Cynara Cardunculus L. var. sylvestris Lam.). Acta Hort. 660, 47–53.
Rangarajan A., Ingall B.A., Zeppelin V.C., 2000. Vernalization strategies to enhance production of annual globe artichoke. HortTechnology, 10(3), 585–588.
Sałata A., Gruszecki R., 2010. The quantitative analysis of poliphenolic compounds in different parts of the artichoke (Cynara scolymus L.) depending of growth stage of plants. Acta Sci. Pol., Hortorum Cultus 9 (3), 175–181.
Schrader W.L., 1992. Growth regulator effect on earliness and yield in artichoke grown as annual from seed. Hort. Sci., 27, 643.
Tesi R., Lombardi P., Lenzi A., 2004. Nursery production of rooted offshoots of globe artichoke (Cynara scolymus L.). Acta Hort. 660, 399–403.
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