engleski

Influence of sowing time on germination of different lettuce types (Lactuca sativa L.)

For a successful production of lettuce (Lactuca Sativa L.) healthy and quality seed is basic requirement. Lettuce belongs to the leaf vegetable cultivars which are characterized by the modest temperature requirements at the stage of germination and emergence, as well as during the growth phase. The aim of this study was to determine the effect of two different sowing dates and two different environment on seed germination efficiency (percentage), germination energy, length and mass of germ and length of root for the four different lettuce types. Three types of lettuce studied: Ljubljanska Ledenka, Vegorka the Great Lakes belong to the iceberg lettuce, while the remaining Quattro Stagioni belongs to the butter lettuce. The results showed significant differences between examined characteristics of lettuces grown in different periods. For the same lettuce types the differences were also noticed between results obtained in different environment within the same period of growth.

lettuce ; seed ; germination ; sowing date

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