Genetic and agronomic assessment of cob traits in corn under low and normal nitrogen management conditions

TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
Constantin JansenThomas Lübberstedt

Abstract

Exploring and understanding the genetic basis of cob biomass in relation to grain yield under varying nitrogen management regimes will help breeders to develop dual-purpose maize. With rising energy demands and costs for fossil fuels, alternative energy from renewable sources such as maize cobs will become competitive. Maize cobs have beneficial characteristics for utilization as feedstock including compact tissue, high cellulose content, and low ash and nitrogen content. Nitrogen is quantitatively the most important nutrient for plant growth. However, the influence of nitrogen fertilization on maize cob production is unclear. In this study, quantitative trait loci (QTL) have been analyzed for cob morphological traits such as cob weight, volume, length, diameter and cob tissue density, and grain yield under normal and low nitrogen regimes. 213 doubled-haploid lines of the intermated B73 × Mo17 (IBM) Syn10 population have been resequenced for 8575 bins, based on SNP markers. A total of 138 QTL were found for six traits across six trials using composite interval mapping with ten cofactors and empirical comparison-wise thresholds (P = 0.001). Despite moderate to high repeatabilities across trials, few QTL were consistent across tr...Continue Reading

References

May 10, 2002·Plant Molecular Biology·Michael LeeArnel Hallauer
Jul 26, 2005·Nature·Erik VollbrechtRobert Martienssen
Mar 15, 2006·Journal of Animal Breeding and Genetics = Zeitschrift Für Tierzüchtung Und Züchtungsbiologie·B HarderE Kalm
May 8, 2009·Genome Research·Xuehui HuangBin Han
Jun 11, 2010·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·Luyan ZhangJiankang Wang
Jul 1, 1994·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·M Cooper, I H Delacy
Sep 1, 1992·TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik·J W van Ooijen

❮ Previous
Next ❯

Related Concepts

Related Feeds

Biofuels (ASM)

Biofuels are produced through contemporary processes from biomass rather than geological processes involved in fossil fuel formation. Examples include biodiesel, green diesel, biogas, etc. Discover the latest research on biofuels in this feed.