Search

Search Results

• Transcriptomic analysis of the combined effects of humic acids and nutrients in maize (Zea mays L.)

  5-30

  Kincső Decsi

  Mostafa Ahmed

  Zsolt Vaszily

  Donia Abdul-Hamid

  Zoltán Tóth

  Views:

  62

  The use of humic acids in agricultural production worldwide dates back several decades and numerous scientific studies support the beneficial effects of the compounds. However, less information is available about their combined use with macro- and microelements. The aim of our study was to investigate the effects of humic acids combined with boron and sulfur using modern genetic tools. We performed genome-level transcriptomic analyses using the Next Generation Sequencing (NGS) technique and found that the combined use of humic acids with nutrients positively influences several plant biochemical processes. Its beneficial effects extend to certain stages of photosynthesis and cellular respiration, and also affect the function of some ribosomal genes. However, among the findings previously published in the literature, at the gene level we were unable to confirm additional positive effects (e.g. stress-relieving, antioxidant effects, etc.) that can be derived from the individual or combined use of humic acids. Our studies provide deeper insight and explain the transcriptomic background of changes in some plant physiological processes observed upon application of humic acid solutions.

• The effect of nitrogen splitting in sweet maize (Zea mays L. convar. saccharata Koern) hybrids on plant physiological traits and yield

  67-88

  József Csajbók

  Erika Kutasy

  Éva Babett Ábrahám

  Emese Seres

  András Szabó

  Lajos Dóka

  István Csaba Virág

  Attila Vad

  Péter Pepó

  Views:

  63

  A small plot field experiment was established to examine the hybrid-specific effects of split N fertilisation and irrigation on chernozem soil with calcareous deposits on the Hajdúság loess ridge. We tested the effect of different rates of the optimum 75 kg N/ha N rate established in our previous experiments at the given site. Irrigation increased the height of both hybrids in all treatments by an average of 13.0 cm. There was no statistically confirmed difference in leaf area between irrigated and non-irrigated hybrids. The different nutrient responses of the hybrids are shown by the fact that all nitrogen split treatments resulted in yield increases (7.5–17.5%) for the Tyson hybrid, whereas Dessert R78 yielded 1–7.9% less than the control in two treatments. The irrigation response of the two genotypes was different, with Dessert R78 yielding 2868 kg and Tyson 2066 kg more than the non-irrigated treatment, averaged over the fertilisation treatments.