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Selection for high spike fertility index increases genetic progress in grain yield and stability in bread wheat

Published on Jul 1, 2018in Euphytica1.53
· DOI :10.1007/s10681-018-2193-4
M. P. Alonso2
Estimated H-index: 2
,
N. E. Mirabella2
Estimated H-index: 2
+ 2 AuthorsAna C. Pontaroli13
Estimated H-index: 13
Abstract
Spike fertility index (SF) has been proposed as a promising trait to be used as a selection criterion in wheat breeding programs aimed at increasing grain yield, but no actual evidence of its successful application has been reported. In this study, 146 recombinant inbred lines derived from a cross between ‘Baguette 10’ and ‘Klein Chaja’, Argentinean spring bread wheat cultivars with contrasting SF, were evaluated during three crop seasons (2013, 2014 and 2015) at Balcarce, Argentina. Grain yield, grain number/m2, grain weight, and SF were measured at maturity. Changes in grain yield (i.e., responses to selection) after application of different selection strategies, including different selection criteria and selection intensities, were determined. Significant correlations were observed between grain number and grain yield, SF and grain yield, and SF and grain weight. Analysis of SF variance components showed a significant genotype × environment interaction, but it represented only 9% of the total variation, whereas 51% of the variation was genetic, resulting in a high narrow-sense heritability (0.84). The use of SF as a selection criterion, either solely or in combination with selection for high yield, increased yield, resulting in higher and more stable yields than if selecting for high yield alone. Our findings support the use of spike fertility index as a selection criterion for increasing genetic progress and stability of yield in bread wheat breeding programs.
  • References (38)
  • Citations (3)
References38
Newest
#1M. P. Alonso (CONICET: National Scientific and Technical Research Council)H-Index: 2
#2P. E. Abbate (INTA: International Trademark Association)H-Index: 13
Last.Ana C. Pontaroli (CONICET: National Scientific and Technical Research Council)H-Index: 13
view all 6 authors...
#1Ignacio I. Terrile (INTA: International Trademark Association)H-Index: 5
#2Daniel J. Miralles (CONICET: National Scientific and Technical Research Council)H-Index: 33
Last.Fernanda G. González (CONICET: National Scientific and Technical Research Council)H-Index: 15
view all 3 authors...
#1Oscar E. Gonzalez-Navarro (CIMMYT: International Maize and Wheat Improvement Center)H-Index: 2
#2Simon Griffiths (Norwich Research Park)H-Index: 27
Last.Gustavo A. Slafer (University of Lleida)H-Index: 59
view all 5 authors...
#1M. Nelly Arguello (UA: University of Arkansas)H-Index: 2
#2R. Esten Mason (UA: University of Arkansas)H-Index: 9
Last.Edward E. Gbur (UA: University of Arkansas)H-Index: 23
view all 9 authors...
#1Mónica Elía (University of Lleida)H-Index: 9
#2Roxana Savin (University of Lleida)H-Index: 31
Last.Gustavo A. Slafer (University of Lleida)H-Index: 59
view all 3 authors...
#1Gustavo A. Slafer (University of Lleida)H-Index: 59
#2Mónica Elía (University of Lleida)H-Index: 9
Last.Fernanda G. González (CONICET: National Scientific and Technical Research Council)H-Index: 15
view all 8 authors...
Cited By3
Newest
#1Gizaw M. Wolde (Leibniz Association)H-Index: 3
#2Martin Mascher (Leibniz Association)H-Index: 26
Last.Thorsten Schnurbusch (MLU: Martin Luther University of Halle-Wittenberg)H-Index: 28
view all 3 authors...
#1Addy L. Garcia (University of Lleida)
#2Roxana Savin (University of Lleida)H-Index: 31
Last.Gustavo A. Slafer (University of Lleida)H-Index: 59
view all 3 authors...
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