Four-Year Study on the Bio-Agronomic Response of Biotypes of Capparis spinosa L. on the Island of Linosa (Italy)

The caper plant is widespread in Sicily (Italy) both wild natural habitats and as specialized crops, showing considerable morphological variation. However, although contributing to a thriving market, innovation cropping low. aim of the study was evaluate agronomic production behavior some biotypes Capparis spinosa L. subsp. rupestris, identified on Island Linosa for growing purposes. Two years seven species were tested randomized complete block design. main parameters determined. Phenological stages also observed. Analysis variance showed high variability between biotypes. Principal component analysis cluster highlighted clear distinction based biometric characteristics. Production data collected two-year period 2007–2008 greatest levels third year following planting 2005. In particular, biotype SCP1 had highest average value (975.47 g) flower bud consistency. Our results permitted identification interest introduction into new fields. Further research needed order characterize terms chemical composition buds fruits.