Abstract
AbstractIn a two‐year field trial, the influence of the physiological age and the size of seed tubers on various growth parameters was determinedEmergence and senescence occurred earlier in plants of older physiological age. On the other hand the physiological age did not influence the number of stems, the stem dry weight, the leaf number, the leaf dry weight, the leaf area, and the specific leaf area. There was a positive correlation between seed tuber size and number of stems but a negative correlation to the stem dry weight. Bigger seed tubers and consequently a higher number of stems had initially a positive effect on the number of leaves, leaf area and leaf dry weight per plant but this was reversed in the course of the vegetation period. The specific leaf area was only influenced by the weather conditions. There was a strong, highly significant negative correlation between number of stems and branching. The correlation between number of stems and leaf area as well as leaf area duration was positive.
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