Genetic Yield Gains and Changes in Associated Traits of CIMMYT Spring Bread Wheat in a “Historic” Set Representing 30 Years of Breeding

Lopes, Marta S.; Reynolds, M.P.; Manès, Yann; Singh, Ravi P.; Crossa, J.; Braun, Hans‐Joachim

doi:10.2135/cropsci2011.09.0467

Cited by 177 publications

(161 citation statements)

References 24 publications

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“…Initiating reproduction too early or too late in the life of an individual could have negative effects on its ability to produce progeny. Some studies showed a significant decrease in days to heading (Guarda et al 2004;Lopes et al 2012). Our results are consistent with other publications (Underdahl et al 2008;Graybosch and Peterson 2010;Mladenov et al 2011;Mustaoea and Saulescu 2011) where increased grain yield was achieved without extending the crop-ping season (Fig.…”

Section: Cereal Research Communications 42 2014supporting

confidence: 93%

“…Our results under conventional tillage ( Fig. 1(C)) are coincident with those of other authors (Green et al 2012;Lopes et al 2012;Matus et al 2012;Xiao et al 2012;Sanchez-García et al 2013), where a significant genetic progress was achieved during the…”

supporting

confidence: 92%

“…However, an increased partitioning through additional reduction in plant height is not likely, as comparative studies indicate that optimal plant heights have already been achieved (Mustaoea and Saulescu 2011;Zheng et al 2011;Lopes et al 2012). According to the crop plant ideotype concept advanced by Reynolds et al (1994), shorter plants are better adapted to irrigated, high input environments, while taller plants are considered to have better yield stability under adverse conditions.…”

Section: Cereal Research Communications 42 2014mentioning

confidence: 99%

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Genotype × tillage interaction in a recurrent selection program in wheat

Maich¹,

Rienzo²

2014

Cereal Research Communications

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The objective of this study was to test if the response to 10 cycles of a recurrent selection program conducted under conventional tillage and rain fed conditions was the same when contrasted, for several traits, under conventional and non-tillage practices. During two season (2011 and 2012) the 44 S-derived families (four/C 0 to C 10 populations) were evaluated under conventional and non-tillage systems in two fields next to each other. Days to anthesis, plant height, grain, and biomass yield and 1000-grain weight were determined. The grain number per m 2 and harvest index was also estimated. From a random sample of 10 tillers the spikelet per spike and grains per spike were measured. For each trait, a linear mixed model (regression) was fitted to the experimental data. The slopes, under conventional tillage, were significant greater than zero for grain yield, harvest index, seeds per square meter, spikelet per spike and seeds per spike. Under non-tillage the list of traits showing slopes significantly greater than zero was shorter. For most traits there was a significant difference in the intercept terms between conventional tillage and non-tillage, which is interpreted as the tillage-practice effect. The concurrent evaluation in conventional and non-tillage soil managements of ten cycles of a recurrent selection program performed under conventional tillage confirmed the occurrence of a significant genetic progress only under conventional tillage.

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Section: Cereal Research Communications 42 2014supporting

confidence: 93%

supporting

confidence: 92%

Section: Cereal Research Communications 42 2014mentioning

confidence: 99%

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Genotype × tillage interaction in a recurrent selection program in wheat

Maich¹,

Rienzo²

2014

Cereal Research Communications

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“…However, the pace of progress has been slow and the rate of yield gains has been minimal due to the complex nature of drought and non-availability of precise drought screening methods. As a result, the genetic gain achieved is about 1% per year in several species (Duvick, 2005;Cooper et al, 2009;Brisson et al, 2010;Lopes et al, 2012;Aisawi et al, 2015). The most promising option to design more drought resilient and sustainable production is to target the major traits of adaptation that include early flowering and seed set before the onset of terminal drought (Sennhenn et al, 2017).…”

Section: Genomics-assisted Breedingmentioning

confidence: 99%

Accelerating genetic gains in legumes for the development of prosperous smallholder agriculture: integrating genomics, phenotyping, systems modelling and agronomy

Varshney

Thudi

Pandey

et al. 2018

Journal of Experimental Botany

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Grain legumes form an important component of the human diet, provide feed for livestock, and replenish soil fertility through biological nitrogen fixation. Globally, the demand for food legumes is increasing as they complement cereals in protein requirements and possess a high percentage of digestible protein. Climate change has enhanced the frequency and intensity of drought stress, posing serious production constraints, especially in rainfed regions where most legumes are produced. Genetic improvement of legumes, like other crops, is mostly based on pedigree and performance-based selection over the past half century. To achieve faster genetic gains in legumes in rainfed conditions, this review proposes the integration of modern genomics approaches, high throughput phenomics, and simulation modelling in support of crop improvement that leads to improved varieties that perform with appropriate agronomy. Selection intensity, generation interval, and improved operational efficiencies in breeding are expected to further enhance the genetic gain in experimental plots. Improved seed access to farmers, combined with appropriate agronomic packages in farmers' fields, will deliver higher genetic gains. Enhanced genetic gains, including not only productivity but also nutritional and market traits, will increase the profitability of farming and the availability of affordable nutritious food especially in developing countries.

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“…Strategies particular to the mode of reproduction are used in breeding these plants. Available information indicates that breeding of this type of plant has been successful in different regions of the world [2][3][4].…”

Section: Introductionmentioning

confidence: 99%

Perspectives for the Use of Quantitative Genetics in Breeding of Autogamous Plants

2013

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With the increased demand for food, the use of methods and alternatives that increase efficiency in selection of inbred lines is necessary. e use of quantitative genetics plays an important role in this respect, especially when the pedigree method is used in autogamous plants. is study proposes the inclusion of relationship information among progenies using the best linear unbiased predictor (BLUP) to obtain the breeding values of greater accuracy and, consequently, increase genetic gains from the selection. A strategy is proposed that aims to accelerate the program of obtaining perennial plant inbreds and use the greatest amount of information possible in selection so as to attain maximum accuracy. In that way, it would be possible to make inbreds available which are better than the existing ones, with greater frequency, meeting the agribusiness demand involved in production of perennial plants.

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Genetic Yield Gains and Changes in Associated Traits of CIMMYT Spring Bread Wheat in a “Historic” Set Representing 30 Years of Breeding

Abstract: T ë~gënëtic yield progress of 26 spring wheat {Triticum aestivum L.

Cited by 177 publications

References 24 publications

Genotype × tillage interaction in a recurrent selection program in wheat

Genotype × tillage interaction in a recurrent selection program in wheat

Accelerating genetic gains in legumes for the development of prosperous smallholder agriculture: integrating genomics, phenotyping, systems modelling and agronomy

Perspectives for the Use of Quantitative Genetics in Breeding of Autogamous Plants

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