Available Online: http://www.ejpau.media.pl/volume16/issue2/abs-01.html
INFLUENCE OF SOIL SUPPLEMENTATION WITH NITROGEN AND MAGNESIUM ON THE SIZE OF ASSIMILATION AREA OF MAIZE CULTIVARS (ZEA MAYS L.) DIFFERING IN GENETIC PROFILE
Piotr Szulc1, Jan Bocianowski2, Magdalena Rybus-Zając3
1 Department of Agronomy, Poznań University of Life Sciences, Poland
2 Department of Mathematical and Statistical Methods, Poznań University of Life Sciences
3 Department of Plant Physiology, Poznań University of Life Sciences, Poland
Measurements of maize leaves aim at assessing the photosynthetic capacity of a given species and estimating the impact of habitat and agronomic factors on the size of photosynthetic capacity. The paper presents the results of three-year field experiments whose purpose was to analyze the growth of active organs in the process of photosynthesis of two different maize hybrid types, depending on dose of nitrogen and magnesium in the cob flowering stage. The assessment of the leaf area growth was made based on the assimilation area of a single plant and specific leaf area, leaf weight fraction, stem and ear weight fraction, leaf area index. We found that the "stay-green" hybrid developed fewer leaves per plant, while at the same time their weight increased, compared to the traditional variety. The hybrid ES Paroli SG was characterized by a greater total leaf blade area per plant and LAI.
Key words: maize, stay-green, nitrogen, magnesium, acid invertase.
Department of Agronomy, Poznań University of Life Sciences, Poland
Department of Mathematical and Statistical Methods, Poznań University of Life Sciences
Wojska Polskiego 28
Department of Plant Physiology, Poznań University of Life Sciences, Poland
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.