Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.
Volume 8
Issue 3
Sawicka B. , Michałek W. 2005. EVALUATION AND PRODUCTIVITY OF Helianthus tuberosus L. IN THE CONDITIONS OF CENTRAL-EAST POLAND, EJPAU 8(3), #42.
Available Online: http://www.ejpau.media.pl/volume8/issue3/abs-42.html


Barbara Sawicka1, Władysław Michałek2
1 Department of Plant Production, Agricultural University of Lublin, Poland
2 Department of Plant Physiology, Agricultural University of Lublin, Poland



The analysis of changeability of plant flowering, photosynthetic activity of the leaves and productivity of the over-ground part and tubers of Helianthus tuberosus was based on the results of a strict field experiment done in the years 2001-2003 in Parczew on light soil, good rye complex. The experiment was carried out using the method of randomized blocks in 3 repetitions. 2 cultivars of Jerusalem artichoke were studied, namely Albik and Rubik, with different morphological and physiological types. The studies evaluated the intensity of flowering and phytosynthetic activity of the plants at anthesis through the measurements of the induction of leaves chlorophyll fluorescence and productivity of plants. Taking into consideration the evaluated indexes of flowering, the length of flowering turned out to be the most stable property, while the maximum efficiency of photosystem PS II in darkness (FV/Fm) proved to be the most stable of the physiological and morphological features. In the conditions of central-east Poland the best value of photosystem PS II in darkness and in light, a higher number of electrons in PS II in the conditions of adjustment to light and higher coefficients of photo-chemical and non-photochemical fluorescence quenching were found out for cultivar Albik, which testifies to big potential efficiency of photosystem II of this cultivar and its potential productivity. Results of measurements of chlorophyll fluorescence point out that they can be considered as indicators for earlier anticipation of Jerusalem artichoke yielding.

Key words: Jerusalem artichoke, cultivars, flowering, chlorophyll fluorescence, productivity.

Barbara Sawicka
Department of Plant Production,
Agricultural University of Lublin, Poland
Akademicka 15, 20-033 Lublin, Poland
email: barbara.sawicka@ar.lublin.pl

Władysław Michałek
Department of Plant Physiology,
Agricultural University of Lublin, Poland
15 Akademicka Street, 20-930 Lublin, Poland
Phone: +48 81 4456694
email: michalek@agros.ar.lublin.pl

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.