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Ana C. Pontaroli
National Scientific and Technical Research Council
28Publications
13H-index
1,397Citations
Publications 30
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Increasing wheat (Triticum aestivum L.) production is required to feed a growing human population. In order to accomplish this task a deeper understanding of the genetic structure of cultivated wheats and the detection of genomic regions significantly associated with the regulation of important agronomic traits are necessary steps. To better understand the genetic basis and relationships of adaptation and yield related traits, we used a collection of 102 Argentinean hexaploid wheat cultivars gen...
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#1N. E. Mirabella (INTA: International Trademark Association)H-Index: 2
#2P. E. Abbate (INTA: International Trademark Association)H-Index: 14
Last.Ana C. Pontaroli (CONICET: National Scientific and Technical Research Council)H-Index: 13
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Lodging is the permanent displacement of plant shoots from an upright position and represents a major obstacle to reaching yield potential in bread wheat (Triticum aestivum L.). Breeding programs would benefit from the identification of lodging-related traits amenable to easy and rapid screening, even in the absence of lodging. However, no locally tested lodging model is available for the Pampas region of Argentina, and most lodging models are based on measurements before crop maturity. We adapt...
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#1M. P. AlonsoH-Index: 2
#2N. E. MirabellaH-Index: 2
Last.Ana C. PontaroliH-Index: 13
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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...
3 CitationsSource
#1Ignacio A. Ramirez (Texas A&M University System)
#2P. E. AbbateH-Index: 14
Last.Ana C. PontaroliH-Index: 13
view all 4 authors...
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#1M. P. Alonso (CONICET: National Scientific and Technical Research Council)H-Index: 2
#2P. E. Abbate (INTA: International Trademark Association)H-Index: 14
Last.Ana C. Pontaroli (CONICET: National Scientific and Technical Research Council)H-Index: 13
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Abstract Grain yield in wheat is generally considered to be sink-limited during grain filling. But is this limitation inherent to the crop species or a consequence of the breeding process? A way to ascertain this is by using genetic materials not subject to selection. Grain yield could be analyzed as the product between: (i) grain number per unit area, (ii) the potential grain weight (i.e. weight per grain obtained without source limitation); and (iii) the degree of sink limitation (DSL). The pr...
2 CitationsSource
Grain yield in bread wheat is often tightly associated with grain number/m 2 . In turn, spike fertility (SF), i.e., the quotient between grain number and spike chaff dry weight, accounts for a great proportion of the variation in grain number among cultivars. In order to examine the potential use of SF as a breeding target, (1) variation for the trait was assessed in six datasets combining commercial cultivars under different environmental conditions, (2) trait heritability was estimated in a se...
16 CitationsSource
#1Diana L. MartinoH-Index: 1
#2P. E. AbbateH-Index: 14
Last.Ana C. Pontaroli (CONICET: National Scientific and Technical Research Council)H-Index: 13
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In wheat, grain number is considered as the product of spike dry weight (SDW) and the number of grains per unit of SDW, that is an indicator of spike fertility (SF). The aim of this study was to determine the heritability of SF and the effect of early selection for high SF on its relationship with other spike yield components. Two field experiments were conducted in the south-eastern Pampas (Argentina) with 400 F2 and F2:3 families obtained from two crosses between varieties with contrasting SF ...
13 CitationsSource
#2Ignacio Abel Ramirez (Monsanto)H-Index: 1
Last.Ana C. Pontaroli (CONICET: National Scientific and Technical Research Council)H-Index: 13
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Rice is susceptible to cold during early developmental stages. Most tolerant cultivars have been developed for other conditions than those occurring in South America’s rice growing areas, or their grain type is not suitable for the local markets. If locally adapted varieties were available, growers could anticipate sowing date, making flowering time coincide with the moment of maximum solar radiation and increasing yields. In this work, 116 rice inbred lines and varieties of diverse origin withi...
2 CitationsSource
Fil: Alemandri, Vanina. Instituto Nacional de Tecnologia Agropecuaria. Centro de Investigaciones Agropecuarias. Instituto de Patologia Vegetal; Argentina
#1P. E. Abbate (INTA: International Trademark Association)H-Index: 14
#2Ana C. Pontaroli (INTA: International Trademark Association)H-Index: 13
Last.F. GutheimH-Index: 3
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Wheat grain yield is often associated with grain number/m 2 . Spike fertility (SF), i.e. the quotient between grain number and spike chaff dry weight, is a major component of grain number/m 2 determination. Several methodologies have been proposed in the literature for field determination of SF, but they are tedious and expensive. Also, no comparison between methodologies has been done. The feasibility of using wheat SF as a selection criterion in a breeding programme or as a variable of interes...
22 CitationsSource
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