Untersuchungen über die phänotypische Stabilität einiger Merkmale von <i>Vitis vinifera</i>
DOI:
https://doi.org/10.5073/vitis.1978.17.258-265Abstract
Von 9 Merkmalen wurde durch Untersuchungen an 6 Sorten von Vitis vinifera
an 7-10 Standorten über 2 Jahre die phänotypische Stabilität bestimmt. Als Parameter der phänotypischen Stabilität wurden die Ökovalenz (WRICKE 1964) und die sortentypische Umweltregression (FINLAY und WILKINSON 1963, EBERHART und RUSSEL 1966) berechnet. Zwischen den Sorten konnten für einige Merkmale Unterschiede in der phänotypischen Stabilität nachgewiesen werden, die mit den allgemeinen Erfahrungen der Praxis übereinstimmen. Die Ergebnisse zeigen, daß die Bestimmung der phänotypischen Stabilität eine brauchbare Methode zur Charakterisierung der Anbaueignung von Zuchtstämmen darstellt.
lnvestigations on the phenotypic stability of some characters of Vitis vinifera
The phenotypic stability of 9 characters was determined by investigations on 6 varieties of Vitis vinifera at 7-10 locations during 2 years. The ecovalence (WRICKE 1964) and the environmental regression typical of the varieties (FINLAY and WILKINSON 1963, EBERHART and RUSSEL 1966) were calculated as parameters for the phenotypic stability. Differences in the phenotypic stability could be established between the varieties for several characters which coincide with the general experiences in practice. The results show that the degree of phenotypic stability gives valuable informations about the suitability of new breeding stocks for cultivation.
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