Differentiation of root system size in potato cultivars
Anna Głuska
a.gluska@ihar.edu.plZakład Agronomii Ziemniaka, Instytut Hodowli i Aklimatyzacji Roślin, Oddział Jadwisin (Poland)
Abstract
The potato (Solanum tuberosum L.) is a species characterized by rather shallow root system which causes low tolerance of this plant to drought. Growth of roots of three potato cultivars differing in sensitivity to drought was examined in the years 1991–1992 in natural soil profile (sandy clay loam), and in the years 1990–1992 in a pot experiment in sandy ground. Moreover, in the years 1994–1998, comparative measurements of root system size in a group of twelve cultivars were carried out. It was found that the sensitive to drought cv. Kalina compared to the tolerant cvs Cisa and San had considerably smaller and shallower root system both in natural soil profile and in pots. The investigations on a group of 12 potato cultivars showed highly significant differences between the cultivars in total root length, content of dry matter and rooting depth. Root length was positively correlated with dry matter yield of tubers produced by the examined plants.
Keywords:
cultivars, potato, root system, sensitivity to droughtReferences
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Authors
Anna Głuskaa.gluska@ihar.edu.pl
Zakład Agronomii Ziemniaka, Instytut Hodowli i Aklimatyzacji Roślin, Oddział Jadwisin Poland
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Copyright (c) 2004 Anna Głuska
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