Effect of abiotic stress factors on the chlorophyll content of inbred maize lines

P. Bónis, T. Árendás, I. Jócsák, C. Mikecz, G. Micskei, L. Marton

Research output: Contribution to journalArticle

Abstract

Inbred maize lines were treated with normal and double rates of post-emergence herbicides in a small-plot field experiment in one dry and one wet year. The chlorophyll a + b content of symptom-free ear-leaves was determined using a spectrophotometer after 50% silking in order to determine whether various rates of post-emergence herbicides had any effect on the chlorophyll content at flowering and how this was influenced by the type of year. The chlorophyll a + b content of the inbred lines was greatly dependent on the year, with values twice as high in the wet year as in the dry year. Treatment with tembotrione + isoxadifen-ethyl had no effect on the chlorophyll content in either year. Both rates of mesotrione + terbutylazine reduced the chlorophyll a + b content of one stress-sensitive inbred line in the dry year, but not in the wet year. In the wet year bentazone + dicamba increased the chlorophyll content, but only for one line was this effect significant irrespective of the dose. In the dry year the double dose caused a significant increase in this genotype, but the chlorophyll contents of the other lines did not differ significantly from the control.

Original languageEnglish
Pages (from-to)201-207
Number of pages7
JournalActa Agronomica Hungarica
Volume59
Issue number3
DOIs
Publication statusPublished - Sep 1 2011

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Keywords

  • chlorophyll content
  • inbred maize line
  • post-emergence herbicide
  • year effect

ASJC Scopus subject areas

  • Agronomy and Crop Science

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