Genotype × tillage interaction in a recurrent selection program in wheat

Maich, R.; Rienzo, Julio A. Di

doi:10.1556/crc.2013.0069

Cited by 8 publications

(8 citation statements)

References 33 publications

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“…Moreover, Sadras and Connor (1991) established a simple and consistent relationship between harvest index and the fraction of water transpired after anthesis. Monneveux et al (2004 a-b), showed that higher yields in wheat are accompanied by increased straw ash content; similarly, the improvement for grain yield under CT, found by Maich and Di Rienzo (2014), working on the materials of the same selection program on which this paper is based, are also related with an increase in straw ash content. Not being the water stored in the soil a limiting factor, in the NT soil management (D) Figure 1.…”

Section: Discussionmentioning

confidence: 74%

“…A significance level of 5% was used to interpret results. Statistical calculations were performed by InfoStat statistical software (Di Rienzo et al 2014).…”

Section: Discussionmentioning

confidence: 99%

“…The twenty-four genotypes did not highly differ in phenology. The development of the base population was described by Maich and Di Rienzo (2014).…”

Section: Plant Materialsmentioning

confidence: 99%

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Straw production, carbon and ash content variations after ten cycles of recurrent selection in bread wheat grown under tilled and non-tilled soils

Maich

Hang

Rienzo

2017

Cereal Research Communications

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The objective of this work was to determine the change for straw production, carbon and ash content in vegetative tissues through ten cycles of recurrent selection in bread wheat, evaluated under tilled (CT) and non-tilled (NT) soils. Twenty-four wheat genotypes, four for each one of the 0, 2, 4, 6, 8 and 10 cycles of recurrent selection (RS), were used in this study. Experiments were established during two successive seasons. Ash content was expressed on dry mass basis. To estimate the carbon content, we based our calculation on the assumption that organic matter is 50% carbon. Straw dry weight was measured. For each trait, a linear mixed model (regression) was fitted to the experimental data. In response to the number of selection cycles, the ash content percentage increased under CT and decreased under NT. Carbon content decreases under CT, but increases under NT. The sequestered straw carbon and the straw production significantly decrease under CT meanwhile there was no change under NT. The observed increase for straw ash content would be related to the highest rate of transpiration in the more advanced recurrent selection cycles. Consistent with these results, the percentage of straw carbon content decreased because of the mobilization of reserves from the stems and leaves to the grains.

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Section: Discussionmentioning

confidence: 74%

“…A significance level of 5% was used to interpret results. Statistical calculations were performed by InfoStat statistical software (Di Rienzo et al 2014).…”

Section: Discussionmentioning

confidence: 99%

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Straw production, carbon and ash content variations after ten cycles of recurrent selection in bread wheat grown under tilled and non-tilled soils

Maich

Hang

Rienzo

2017

Cereal Research Communications

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“…Maich and Di Rienzo (2014) show a significant genetic progress for GY when the wheat crop was cultivated in CT, which did not occur when grown in NT. However, a significant advance was observed for grain yield per spike, a grain yield per unit area component, when the genetic gain was measured in NT.…”

Section: Discussionmentioning

confidence: 94%

“…Various approaches have been used. For example, progress has been evaluated from the differences between historic check cultivars and the mean yield of highest yielding lines, cultivars from different eras in common environments (Giunta et al 2007), or materials derived from successive cycles of recurrent selection (RS) (Maich and Di Rienzo 2014).…”

Section: Introductionmentioning

confidence: 99%

Association between grain yield, grain quality and morpho-physiological traits along ten cycles of recurrent selection in bread wheat (Triticum aestivum L.)

Maich¹,

Steffolani²,

Rienzo³

et al. 2017

Cereal Research Communications

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The objective of the present investigation was to examine the relationships between agronomical behavior and grain quality along ten cycles of a recurrent selection program performed under rainfed condition. Twenty-four lines, four for each one of the 0, 2, 4, 6, 8 and 10 cycles of recurrent selection, were evaluated for two consecutive years (2011 and 2012). The experimental lines were evaluated under conventional (CT) and no tillage (NT) systems. Grain yield and grain weight were determined and harvest index and grain number estimated. Flour protein content, sodium dodecyl sulphate sedimentation (IS-SDS) and lactic acid SRC (LASRC) were considered as end-use quality predictive tests. The Spearman correlation coefficient was used to measure the relationships among yield, its components and grain quality parameters. Within the context of CT, flour protein content was negatively associated with all the agronomic variables. The IS-SDS has a negative association with the grain weight; meanwhile, LASRC associated positively with all the agronomic variables. When wheat was grown in NT, the relationship between IS-SDS and harvest index, like LASRC with all agronomic traits, was positive. Confining the discussion to the CT results, after ten cycles of recurrent selection the highest grain yield achieved was accompanied by a decrease in protein percentage. However, the decrease in the percentage of protein in more advanced selection cycles was offset by an improvement of its quality.

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