Field performance of potato minitubers with different fresh weights and conventional seed tubers: Multiplication factors and progeny yield variation |
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Authors: | W J M Lommen P C Struik |
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Institution: | (1) Department of Agronomy, Wageningen Agricultural University, Haarweg 333, 6709 RZ Wageningen, The Netherlands |
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Abstract: | Summary Multiplication factors and progeny yield variation in crops from minitubers of five weight classes (ranging from 0.13–0.25
g to 2.00–3.99 g) and conventional seed tubers were studied in field experiments in three years. Multiplication factors were
calculated as the number and weight of progeny tubers produced per planted tuber or per unit planted tuber weight. They were
lower for the lighter minitubers when calculated per tuber and higher when calculated per weight. Yield variation was described
by coefficients of variation for the number and weight of progeny tubers produced. Variation over individual plants of a crop
was higher in stands from the lighter minitubers. Variation over plots within a field was sometimes higher for the lighter
minitubers, but variation over years was similar for all minituber classes. Variation over plots in progeny tuber weight was
higher for minitubers than for conventional tubers. |
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Keywords: | Solanum tuberosum L seed production variability |
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