Nuclear DNA amount, growth, and yield parameters in maize

D. P. Biradar, D. G. Bullock, A. Lane Rayburn

Research output: Contribution to journalArticle

Abstract

Extensive nuclear DNA content variation has been observed in Zea mays. Of particular interest is the effect of this variation on the agronomic potential of maize. In the present study, yield and growth data were collected on 12 southwestern US maize open-pollinated populations. These populations, originally cultivated by the Indians of the southwestern US for both human and animal consumption and adapted to various altitudes, were grown in replicated plots at the University of Illinois Agronomy-Plant Pathology South Farm. All growth and yield parameters were found to be negatively correlated with nuclear DNA amount. The negative correlations of nuclear DNA amount and growth parameters were more pronounced at 60 days after planting (DAP) than 30 DAP. Agronomically-important yield parameters, such as ear or seed weight and seed number per plant, also exhibited a significant negative correlations with nuclear DNA amount. These correlations demonstrate how the nucleotype may exhibit a high degree of influence on the agronomic phenotype. Although the results presented here represent only three replications at one location in 1 year, the observations noted suggest that nucleotype plays an integral role in determining the agronomic performance of maize. Further studies are needed to fully document this role.

Original languageEnglish (US)
Pages (from-to)557-560
Number of pages4
JournalTheoretical and Applied Genetics
Volume88
Issue number5
DOIs
StatePublished - Jul 1 1994

Fingerprint

nuclear genome
Zea mays
corn
DNA
Growth
Seeds
Plant Pathology
planting
agronomy
plant pathology
seeds
agronomic traits
Population
Ear
ears
Phenotype
phenotype
Weights and Measures
farms
animals

Keywords

  • Adaptation
  • Agronomic performance
  • Genome size
  • Nucleotype
  • Zea mays L.

ASJC Scopus subject areas

  • Biotechnology
  • Agronomy and Crop Science
  • Genetics

Cite this

Nuclear DNA amount, growth, and yield parameters in maize. / Biradar, D. P.; Bullock, D. G.; Rayburn, A. Lane.

In: Theoretical and Applied Genetics, Vol. 88, No. 5, 01.07.1994, p. 557-560.

Research output: Contribution to journalArticle

Biradar, D. P. ; Bullock, D. G. ; Rayburn, A. Lane. / Nuclear DNA amount, growth, and yield parameters in maize. In: Theoretical and Applied Genetics. 1994 ; Vol. 88, No. 5. pp. 557-560.
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