Grain weight response to foliar diseases control in wheat (Triticum aestivum L.)

Serrago, Román A.; Carretero, Ramiro; Bancal, Marie Odile; Miralles, Daniel J.

doi:10.1016/j.fcr.2010.11.004

Cited by 46 publications

(59 citation statements)

References 30 publications

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“…On the other hand, late foliar diseases increased assimilate remobilisation from stem to grain growth during grain filling. Thus, the remobilisation increased from~75% to 100% (2007) and from~20% to~35% (2008), highlighting the relevance of reserves to maintain grain growth in wheat crops (Borrás et al 2004;Serrago et al 2011). However, the capacity to use reserves in stressed conditions is a complex process.…”

Section: Discussionmentioning

confidence: 99%

“…The appearance of leaf rust during grain filling decreases assimilate supply during post-anthesis by reductions in radiation interception/absorption (Waggoner and Berger 1987;Bryson et al 1997;Bancal et al 2007;Serrago et al 2009;Carretero et al 2010). These reductions determine fewer assimilates supplied per grain, inducing grainweight reductions (Cornish et al 1990;Gooding et al 1994Gooding et al , 2000Dimmock and Gooding 2002;Ruske et al 2003;Robert et al 2004;Pepler et al 2005;Serrago et al 2011). Although the hypothesis of assimilate supply reduction is the most accepted to explain grain weight decrease due to the appearance of late foliar diseases during grain filling, it has not been clearly established whether those reductions could be completely ascribed to source and/or sink limitations.…”

Section: Introductionmentioning

confidence: 99%

“…defoliations treatments) were applied after grain weight potential had been defined. The capacity to use the assimilates in the stems as reserves, by translocation to growing grains, has been proposed as the main mechanism to compensate photosynthetic capacity reductions during grain filling in wheat (Borrás et al 2004;Serrago et al 2011).…”

Section: Introductionmentioning

confidence: 99%

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Source limitations due to leaf rust (caused by Puccinia triticina) during grain filling in wheat

Serrago

Miralles

2014

Crop Pasture Sci.

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Abstract. Late foliar diseases (especially leaf rust) reduce assimilate supply during post-anthesis, determining fewer assimilates per grain and thereby inducing grain weight reductions. Although the assimilate reduction hypothesis is the most accepted to explain decreases in grain weight due to late foliar diseases, it has not been clearly established whether those reductions could be completely ascribed to source limitations or whether diminished grain weight could be the consequence of reductions in grain weight potential. The objective of this work was to determine whether grain weight reductions due to leaf rust during grain filling could be associated with source-sink limitations. Two experiments (during 2007 and 2008 growing seasons) including healthy and diseased wheat crops were conducted under field conditions. Source-sink manipulation treatments and grain water content measurements were made to test the source-and sink-limitation hypotheses due to the appearance of late foliar diseases during grain filling. Leaf rust was induced to appear exclusively during grain filling, and in both years, it reduced grain yield and grain weight in both experiments. However, except for distal grains, there were no significant differences between healthy and diseased plots in maximum grain water content, indicating that late foliar diseases did not affect the potential size of the grains. The reserves stored in stems were remobilised to the growing grains in both healthy and diseased crops. However, the reserves remaining at physiological maturity were significantly reduced in diseased crops. Reduction in grain number by trimming the spikes increased the grain weight in diseased but not in healthy crops. Grain weight of trimmed spikes in diseased crops reached similar values to those of healthy crops. These results support the hypothesis that foliar diseases could cause source limitation for grain filling beyond differences in grain weight potential when the crops are severely affected by late foliar diseases such as leaf rust.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Source limitations due to leaf rust (caused by Puccinia triticina) during grain filling in wheat

Serrago

Miralles

2014

Crop Pasture Sci.

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“…Grain growth could be considered as controlled by either the supply of photo-assimilates (source limitation) or the capacity of the grains to accumulate available carbohydrates (sink limitation). Numerous experiments have been reported in which the supply of assimilate per grain was modified, suggesting a sink limitation for both, wheat and barley, and sometimes a co-limitation in wheat (Slafer and Savin, 1994;Miralles and Slafer, 1995;Dreccer et al, 1997;Kruk et al, 1997;Bingham et al, 2007a;Serrago et al, 2011). However, under relatively dry environments, grain filling appears to be under stronger sink limitation in barley than in wheat (Josephides, 1993;López-Castañeda and Richards, 1994).…”

Section: Introductionmentioning

confidence: 99%

Comparative behavior of wheat and barley associated with field release and grain weight determination

Prado

Gallardo

Serrago

et al. 2013

Field Crops Research

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a b s t r a c t Double-cropping using the wheat-soybean sequence is a common practice in Argentina to promote the intensification of crops within rotations. However, the late release of the fields by a delayed harvest time in wheat determines soybean yield penalizations. In this context, barley could represent a better option than wheat preceding soybean in the crop rotation since there is some evidence that finishes its cycle earlier than wheat. However, it is not clear which period of barley shortens crop cycle allowing an earlier field release than wheat. The objectives of this study were to compare wheat and barley in terms of (i) field release and (ii) grain weight determination through the analysis of their physiological mechanisms. Field experiments during two consecutive growing seasons testing five different environments (three sowing dates in 2007 and two in 2008) were carried out to analyze the duration of different ontogenic periods and the attributes (dry matter and water dynamics) determining grain weight during the grainfilling period in wheat and barley. Early flowering time was the main cause of the early field release by barley as the grain filling and drying period were similar in both species. A strong relationship was found between dry matter and water dynamics in both species. Barley reached a higher maximum water content than wheat and also achieved physiological maturity with higher moisture concentration than wheat (48% and 39%, respectively). Barley showed a slight increase in grain weight, respect to wheat, due to a source:sink ratio enhancement (4% and 9% for wheat and barley, respectively). These data show an opposite response to that of Mediterranean, Australian and UK environments, where barley was under stronger sink limitation than wheat during the grain-filling period.

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“…In Argentina, Serrago et al [83] determined that grain number was not affected by foliar diseases when they appeared after anthesis. Grain weight was strongly, poorly or not affected by foliar diseases and was not associated individually with both, the sink size and the source size.…”

Section: The Use Of Fungicides In the Integrated Foliar Disease Managmentioning

confidence: 99%

Recent Advances on Integrated Foliar Disease Management with Special Emphasis in Argentina Wheat Production

Simón¹,

Fleitas²,

Schalamuk³

2013

Fungicides - Showcases of Integrated Plant Disease Management From Around the World

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Grain weight response to foliar diseases control in wheat (Triticum aestivum L.)

Cited by 46 publications

References 30 publications

Source limitations due to leaf rust (caused by Puccinia triticina) during grain filling in wheat

Source limitations due to leaf rust (caused by Puccinia triticina) during grain filling in wheat

Comparative behavior of wheat and barley associated with field release and grain weight determination

Recent Advances on Integrated Foliar Disease Management with Special Emphasis in Argentina Wheat Production

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