Potato Research

, Volume 37, Issue 4, pp 383–391

Microtuber and minituber production and field performance compared with normal tubers

  • P. Ranalli
  • F. Bassi
  • G. Ruaro
  • P. Del Re
  • M. Di Candilo
  • G. Mandolino
Article

Summary

Microtuber and minitubers of cv. Monalisa were produced in the laboratory and compared with normal seed tubers in a field experiment. These tubers were planted at similar plant densities (13.6 sprouts per m2) with two distances between rows (60 and 90 cm). Final ground cover was almost complete only in the plots derived from normal tubers and decreased with the size of the mother tubers. Normal seed, mini- and microtubers yielded respectively 50.8, 31.7, and 17.0 t/ha (means of two spacings). At close and wide spacing between rows, microtubers yielded respectively 27.3 and 6.7 t/ha, and minitubers 38.9 to 24.4 t/ha. Row spacing did not influence the yields from normal seed tubers. Total number of tubers per m2 was also affected and, as means of the two spacings, ranged from 107.8 with microtubers, 122.1 with minitubers, to 142.9 with normal tubers. Mother tuber type also affected the yield distribution in three tuber grades (<36, 36–55, and 55–80 mm) and micro and minitubers produced many small tubers. Multiplication rates and the possible use of different propagation sources are discussed.

Additional keywords

propagation sources row spacing canopy cover tuber yield grade distribution multiplication rate Solanum tuberosum L. 

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Copyright information

© Kluwer Academic Publishers 1994

Authors and Affiliations

  • P. Ranalli
    • 1
  • F. Bassi
    • 1
  • G. Ruaro
    • 1
  • P. Del Re
    • 1
  • M. Di Candilo
    • 1
  • G. Mandolino
    • 1
  1. 1.Istituto Sperimentale per le Colture IndustrialiBolognaItaly

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