New hybrids of stock (Matthiola incana L.) for cut stems evaluation in a cold greenhouse.

摘要

The research was carried out over two years in the coastal zone of Salerno. In the first year, plantlets were transplanted on 15 December and 12 white and 15 coloured hybrids were tested and compared with the commercial cultivars Snow Wonder and Maria (white) and Fressia (red). In the second year, the crop was transplanted on 30 October and 11 white and 12 coloured stocks were compared with the cultivars Maria and Julliette (yellow). Plants were grown on mud-clay soil at a density of 22 plants m-2. In the first year, flowering occurred in March, starting from 11 to 14 weeks after transplanting, and the harvests lasted 18 days on average for white and coloured hybrids. In the second year, flowering started in the middle of February, from 13 to 17 weeks after transplanting, and the length of the harvest period was 4 and 5 weeks in the first and in the second group, respectively. Seven white hybrids (S1072, S1074, S1070, S1073, S1088, S1089, S1090) reached the minimum levels of 14 and 20 flowers stems per m2, obtained in the commercial cultivars in the first and the second growing cycle, respectively. Among the coloured stocks, 3 hybrids tested in both years produced more than 13 stems per m2 (S1095 fuchsia, S1091 pink, S1094 lilac). The same level was reached also in 5 hybrids used in only one year (S1092 lilac, S1082 yellow and S1097, S1098, S1099 red). All the most productive hybrids gave flower stems of the First Quality Class (stem length >60 cm and raceme length >15 cm).