Next Article in Journal
Effect of Foliar Boron Fertilization of Fine Textured Soils on Corn Yields
Next Article in Special Issue
The Potential of Lr19 and Bdv2 Translocations to Improve Yield and Disease Resistance in the High Rainfall Wheat Zones of Australia
Previous Article in Journal
Review of Alternative Management Options of Vegetable Crop Residues to Reduce Nitrate Leaching in Intensive Vegetable Rotations
Previous Article in Special Issue
Candidate Gene Identification for a Lethal Chlorophyll-Deficient Mutant in Soybean
Article Menu

Export Article

Open AccessArticle
Agronomy 2014, 4(4), 556-578; doi:10.3390/agronomy4040556

Genetic Dissection of QTL Associated with Grain Yield in Diverse Environments

1
Department of Plant Sciences, University of California, Davis, CA 95616, USA
2
Department of PSES, University of Idaho, 1691 S 2700 W, Aberdeen, ID 83210, USA
3
Monsanto Company, Filer, ID 83328, USA
4
University of Idaho, Moscow, ID 83844-2343, USA
5
Department of Crop and Soil Science, Oregon State University, 109 Crop Science Building, Corvallis, OR 97331, USA
Current address: 925 Road 378, Beaver Crossing, NE 68313, USA.
*
Author to whom correspondence should be addressed.
Received: 20 October 2014 / Revised: 24 November 2014 / Accepted: 27 November 2014 / Published: 5 December 2014
View Full-Text   |   Download PDF [531 KB, uploaded 5 December 2014]   |  

Abstract

Wheat (Triticum aestivum L.) breeding programs strive to increase grain yield; however, the progress is hampered due to its quantitative inheritance, low heritability, and confounding environmental effects. In the present study, a winter wheat population of 159 recombinant inbred lines (RILs) was evaluated in six trials under rainfed, terminal drought, and fully-irrigated conditions, over four years. Quantitative trait locus/loci (QTL) mapping was conducted for grain yield main effect (GY) and the genotype × environment interaction (GEI) effect. A total of 17 QTL were associated with GY and 13 QTL associated with GEI, and nine QTL were mapped in the flanking chromosomal regions for both GY and GEI. One major QTL Q.Gy.ui-1B.2, explaining up to 22% of grain yield, was identified in all six trials. Besides the additive effect of QTL associated with GY, interactions among QTL (QTL × QTL interaction), QTL × environment, and QTL × QTL × environment were also observed. When combining the interaction effects, QTL Q.Gy.ui-1B.2 along with other QTL explained up to 52% of the variation in grain yield over the six trials. This study suggests that QTL mapping of complex traits such as grain yield should include interaction effects of QTL and environments in marker-assisted selection. View Full-Text
Keywords: Triticum aestivum; QTL × QTL interaction; grain yield; genotype × environment interaction Triticum aestivum; QTL × QTL interaction; grain yield; genotype × environment interaction
Figures

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

Scifeed alert for new publications

Never miss any articles matching your research from any publisher
  • Get alerts for new papers matching your research
  • Find out the new papers from selected authors
  • Updated daily for 49'000+ journals and 6000+ publishers
  • Define your Scifeed now

SciFeed Share & Cite This Article

MDPI and ACS Style

Zhang, J.; Chen, J.; Chu, C.; Zhao, W.; Wheeler, J.; Souza, E.J.; Zemetra, R.S. Genetic Dissection of QTL Associated with Grain Yield in Diverse Environments. Agronomy 2014, 4, 556-578.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics

1

Comments

[Return to top]
Agronomy EISSN 2073-4395 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top