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Chilling tolerance of Central European maize lines and their factorial crosses

(2007) ANNALS OF BOTANY. 100(6). p.1315-1321
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Abstract
Background and Aims Chilling-stress tolerance is a prerequisite for maize production under cool climatic conditions. The main goal of this study was to evaluate the Central European dent and flint pools for chilling tolerance during heterotrophic and early autotrophic growth in field trials and growth chamber experiments. Methods Five European flint and five dent inbreds and their 25 factorial crosses were evaluated in six natural environments, where chilling occurred, for chlorophyll concentration and plant height at the three-leaf stage, and plant height and fresh weight at the seven-leaf stage. In growth chambers, leaf 3 growth was analysed under cold and control conditions. Key Results Comparing the field and growth chamber data, the strongest association was found between leaf elongation rate during cold nights and plant height at the three-leaf stage, with a weaker association with the seven-leaf stage. In the field, moderate correlations were observed between plant height at the three-leaf stage, and plant height and fresh weight at the seven-leaf stage, respectively. Furthermore, mid-parent and hybrid performance were only moderately correlated. Conclusions The results suggest that heterotrophic and early autotrophic growth stages are controlled by different genetic factors or that maternal effects play a role. In addition, the findings showed that mid-parent performance is a poor predictor of hybrid performance. Consequently, test cross performance should be the target in quantitiative trait locus (QTL) mapping studies with the final goal of establishing marker-assisted breeding programmes for chilling-tolerant hybrids.
Keywords
Zea mays, maize, chilling stress, heterotrophic and autotrophic growth, ZEA-MAYS-L, EARLY-SEASON GROWTH, COLD-TOLERANCE, GENETIC-VARIATION, PERFORMANCE, GERMINATION, EMERGENCE, SEEDLINGS

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MLA
Bhosale, SU, Bart Rymen, Gerrit Beemster, et al. “Chilling Tolerance of Central European Maize Lines and Their Factorial Crosses.” ANNALS OF BOTANY 100.6 (2007): 1315–1321. Print.
APA
Bhosale, S., Rymen, B., Beemster, G., Melchinger, A., & Reif, J. (2007). Chilling tolerance of Central European maize lines and their factorial crosses. ANNALS OF BOTANY, 100(6), 1315–1321.
Chicago author-date
Bhosale, SU, Bart Rymen, Gerrit Beemster, AE Melchinger, and JC Reif. 2007. “Chilling Tolerance of Central European Maize Lines and Their Factorial Crosses.” Annals of Botany 100 (6): 1315–1321.
Chicago author-date (all authors)
Bhosale, SU, Bart Rymen, Gerrit Beemster, AE Melchinger, and JC Reif. 2007. “Chilling Tolerance of Central European Maize Lines and Their Factorial Crosses.” Annals of Botany 100 (6): 1315–1321.
Vancouver
1.
Bhosale S, Rymen B, Beemster G, Melchinger A, Reif J. Chilling tolerance of Central European maize lines and their factorial crosses. ANNALS OF BOTANY. 2007;100(6):1315–21.
IEEE
[1]
S. Bhosale, B. Rymen, G. Beemster, A. Melchinger, and J. Reif, “Chilling tolerance of Central European maize lines and their factorial crosses,” ANNALS OF BOTANY, vol. 100, no. 6, pp. 1315–1321, 2007.
@article{408468,
  abstract     = {Background and Aims Chilling-stress tolerance is a prerequisite for maize production under cool climatic conditions. The main goal of this study was to evaluate the Central European dent and flint pools for chilling tolerance during heterotrophic and early autotrophic growth in field trials and growth chamber experiments. 
Methods Five European flint and five dent inbreds and their 25 factorial crosses were evaluated in six natural environments, where chilling occurred, for chlorophyll concentration and plant height at the three-leaf stage, and plant height and fresh weight at the seven-leaf stage. In growth chambers, leaf 3 growth was analysed under cold and control conditions. 
Key Results Comparing the field and growth chamber data, the strongest association was found between leaf elongation rate during cold nights and plant height at the three-leaf stage, with a weaker association with the seven-leaf stage. In the field, moderate correlations were observed between plant height at the three-leaf stage, and plant height and fresh weight at the seven-leaf stage, respectively. Furthermore, mid-parent and hybrid performance were only moderately correlated. 
Conclusions The results suggest that heterotrophic and early autotrophic growth stages are controlled by different genetic factors or that maternal effects play a role. In addition, the findings showed that mid-parent performance is a poor predictor of hybrid performance. Consequently, test cross performance should be the target in quantitiative trait locus (QTL) mapping studies with the final goal of establishing marker-assisted breeding programmes for chilling-tolerant hybrids.},
  author       = {Bhosale, SU and Rymen, Bart and Beemster, Gerrit and Melchinger, AE and Reif, JC},
  issn         = {0305-7364},
  journal      = {ANNALS OF BOTANY},
  keywords     = {Zea mays,maize,chilling stress,heterotrophic and autotrophic growth,ZEA-MAYS-L,EARLY-SEASON GROWTH,COLD-TOLERANCE,GENETIC-VARIATION,PERFORMANCE,GERMINATION,EMERGENCE,SEEDLINGS},
  language     = {eng},
  number       = {6},
  pages        = {1315--1321},
  title        = {Chilling tolerance of Central European maize lines and their factorial crosses},
  url          = {http://dx.doi.org/10.1093/aob/mcm215},
  volume       = {100},
  year         = {2007},
}

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