Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 15629
Title Manipulation of tuber-size distribution of a potato crop.
Author(s) Struik, P.C.; Haverkort, A.J.; Vreugdenhil, D.; Bus, C.B.; Dankert, R.
Source Potato Research 33 (1990)4. - ISSN 0014-3065 - p. 417 - 432.
Department(s) Laboratory of Plant Physiology
Laboratory of Field Crops and Grassland Science
Publication type Refereed Article in a scientific journal
Publication year 1990
Keyword(s) plant anatomy - plant morphology - potatoes - solanum tuberosum - plantenanatomie - plantenmorfologie - aardappelen - solanum tuberosum
Categories Crops (General)
Abstract Tuber-size distribution is regulated by many diverse, interacting mechanisms and is therefore difficult to understand and manipulate. It is determined by plant density, number of stems per plant, number of tubers per stem, and yield. Seed size and plant number per unit area are easy to control, but stem number is affected by less controllable factors. Interactions between stems of different types are important for tuber-size distribution.

The hormonal regulation of stolonization and tuberization is still unknown, but under the conditions of north-west Europe the process of tuber set (which is also poorly understood) makes a greater contribution to the final number of tubers than tuberization. The total yield is also relevant, because it affects both the average tuber size and its variation.

Tubers on the same stem differ in timing, rate and duration of growth. The resulting hierarchy in sink strength is not consistent over time. Several mechanisms are suggested for this hierarchy.
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