Using mixing ability analysis from two-way cultivar mixtures to predict the performance of cultivars in complex mixtures

López, Cristina; Mundt, Christopher C.

doi:10.1016/s0378-4290(00)00114-3

Cited by 33 publications

(29 citation statements)

References 21 publications

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“…Newton and Thomas 1992;Lopez and Mundt 2000). To justify a wider use of variety mixtures in agriculture, it seems essential to pursue a better understanding of the mixing potential of specific genotypes under various growing conditions (Wolfe 2006).…”

Section: Introductionmentioning

confidence: 99%

Effects of inter-varietal diversity, biotic stresses and environmental productivity on grain yield of spring barley variety mixtures

2012

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Varietal seed mixtures tend to increase and stabilize crop yields, yet their application is sparse. Large-scale cultivation of variety mixtures may require a better understanding of how inter-varietal interactions and their interaction with the environment may influence the grain yield of variety mixtures relative to their component varieties. For this purpose, six variety mixtures of spring barley and 14 component varieties were grown in each of 17 trial environments. A total of 28 observed and a priori plant characteristics, including grain yield, disease severity and weed competitiveness, were derived for each component variety in each trial. The relationship between intervarietal diversity of each characteristic and the mixing effect on grain yield was analysed. Additionally, various types of yield stability were estimated and compared among mixtures and component varieties. One mixture out-yielded all of its component varieties in almost half of the trial environments. Inter-varietal diversity in grain yield potential correlated significantly with mixing effect, as did straw length diversity when weighted with weed pressure. The grain yields of most mixtures were more stable across environments than their component varieties when accounting also for the general response to environmental productivity. Hence, most mixtures adapted slightly better to environmental productivity and were less sensitive to environmental stress than their component varieties. We conclude that the efficacy of variety mixtures may be enhanced by mixing relatively high-yielding varieties differing in responsiveness to environmental productivity.

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Section: Introductionmentioning

confidence: 99%

Effects of inter-varietal diversity, biotic stresses and environmental productivity on grain yield of spring barley variety mixtures

2012

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“…It uses hybrid breeding methods and quantitative genetics and sets out to describe the general mixing ability (GMA, the mean value for all associations) and/or the specific mixing ability (SMA, the interaction between two given species or cultivars). This was first developed for cultivar mixtures (reviewed in Dawson and Goldringer 2012;Gizlice et al 1989;Knott and Mundt 1990;Lopez and Mundt 2000), but can be extended directly to multiple cropping systems (Gallais 1970;Finckh et al 2000;Finckh and Wolfe 2006), and temporal successions of crops, even though this has not yet been proposed. Ideotypes can be developed by quantitative trait loci (QTL) detection or genomic selection methodologies, using markers to tag the genomic areas with the greatest positive interactions between genotypes or species (complementation/ facilitation).…”

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confidence: 99%

Multiple cropping systems as drivers for providing multiple ecosystem services: from concepts to design

Gaba

Lescourret

Boudsocq

et al. 2014

Agron. Sustain. Dev.

287

190

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Provisioning services, such as the production of food, feed, and fiber, have always been the main focus of agriculture. Since the 1950s, intensive cropping systems based on the cultivation of a single crop or a single cultivar, in simplified rotations or monocultures, and relying on extensive use of agrochemical inputs have been preferred to more diverse, self-sustaining cropping systems, regardless of the environmental consequences. However, there is increasing evidence that such intensive agroecosystems have led to a decline in biodiversity as well as threatening the environment and have damaged a number of ecosystem services such as the biogeochemical nutrient cycles and the regulation of climate and water quality. Consequently, the current challenge facing agriculture is to ensure the future of food production while reducing the use of inputs and limiting environmental impacts and the loss of biodiversity. Here, we review examples of multiple cropping systems that aim to use biotic interactions to reduce chemical inputs and provide more ecosystem services than just provisioning. Our main findings are the identification of underlying ecological processes and management strategies related to the provision of pairs of ecosystem services namely food production and a regulation service. We also found gaps between ecological knowledge and the constraints of agricultural practices in taking account of the interactions and possible trade-offs between multiple ecosystem services as well as socioeconomic constraints. We present guidelines for the design of multiple cropping systems combining ecological, agricultural, and genetic concepts and approaches.

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“…An average WY of 18,098 kg ha -1 show good potential for the selected composites, given that the average actual WY for checks was 17,687 kg ha -1 , and the best of them (Morgan 369) reached 18,348 kg ha -1 . Lopez and Mundt (2000), evaluated the ability of the Miranda and Chavez method for predicting Heterose e padrões de heterose entre raças de milho para forragem RESUMO -O milho …”

Section: Genotypementioning

confidence: 99%

Heterosis and heterotic patterns among maize landraces for forage

Gabriel¹,

Maximo²,

Burak³

2009

CBAB

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Using mixing ability analysis from two-way cultivar mixtures to predict the performance of cultivars in complex mixtures

Cited by 33 publications

References 21 publications

Effects of inter-varietal diversity, biotic stresses and environmental productivity on grain yield of spring barley variety mixtures

Effects of inter-varietal diversity, biotic stresses and environmental productivity on grain yield of spring barley variety mixtures

Multiple cropping systems as drivers for providing multiple ecosystem services: from concepts to design

Heterosis and heterotic patterns among maize landraces for forage

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