+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on Google+Follow on Google+
Follow on LinkedInFollow on LinkedIn

+ Translate

Maize genotype effects on the response to Azospirillum inoculation

Biology and fertility of soils1(3): 193-196
Maize genotype effects on the response to Azospirillum inoculation
Two field experiments were carried out in Northern Argentina, during the 1989-1990 and 1990-1991 growing seasons, on Argentinian and Brazilian maize genotypes. The inoculant consisted of a mixture four Azospirillum brasilense strains isolated from surface-sterilized maize roots in Argentina and three A. lipoferum strains isolated from surface-sterilized maize or sorghum roots in Brazil. Establishment of the inoculated strains was confirmed by the antibiotic resistance of the strains in the highest dilution vials. In all treatments, numbers of Azospirillum spp. were increased and the inoculated strains were found in the highest dilutions. While grain yields of the different genotypes varied between 1700 and 7300 kg ha-1, total N accumulation was much less variable. Significant inoculation effects on total N accumulation and on grain yields were consistently negative with one Argentinian genotype and positive with four Argentinian and two Brazilian genotypes. Significant inoculation effects on leaf nitrate reductase activity at the flowering stage, observed in the range -55% to +176%, indicated the presence of various interactions between the plant NO3(-) metabolism and Azospirillum spp. Three Brazilian and one Argentinian maize genotype showed significant decreases in leaf nitrate reductase due to inoculation while four Argentinian genotypes showed significant increases in leaf nitrate reductase activity. The results of the present study, were consistent over the two field experiments and strongly indicate that more detailed plant genotype-Azospirillum spp. strain interaction studies, taking the entire N metabolism in the plant into account, are needed to allow better inoculation results of cereal crops.

Accession: 002889080

DOI: 10.1007/BF00335934

Download PDF Full Text: Maize genotype effects on the response to Azospirillum inoculation

Related references

Growth response of maize roots to azospirillum inoculation effect of soil organic matter content number of rhizosphere bacteria and timing of inoculation. Soil Biology & Biochemistry 20(1): 45-50, 1988

Growth enhancement of maize zea mays l. through azospirillum lipoferum inoculation effect of plant genotype and bacterial concentration. Agronomie (Paris) 10(8): 649-654, 1990

Response of maize to inoculation with Azospirillum brasilense. Revista Latinoamericana de Microbiologia 30(4): 351-355, 1988

The response of maize (Zea mays) to Azospirillum inoculation in various types of soils in the field. World Journal of Microbiology & Biotechnology 12(5): 511-515, 1996

The effect of Azospirillum inoculation on growth and yield of corn Zea mays, maize, Azospirillum brasilense. Israel journal of botany1(1-4): 247-255, 1982

Effects of inoculation of Azospirillum sp. in maize seeds under field conditions. Journal of Food, Agriculture and Environment 2(1): 238-242, 2004

Effects of inoculation of maize and species of tribe Triticeae with Azospirillum brasilense. Journal of Plant Physiology 140(5): 550-552, 1992

Azospirillum inoculation mitigates water stress effects in maize seedlings. Cereal Research Communications 30(3/4): 343-350, 2002

Effects of inoculation with azospirillum brasilense on photosynthetic enzyme activities and grain yield in maize. Agronomie (Paris) 12(4): 319-324, 1992

Effects of genotype and inoculation protocols on resistance evaluation of maize to maize dwarf mosaic virus strains. Phytopathology 76(8): 769-773, 1986