Comparative analysis of performance and stability among composite cross populations, variety mixtures and pure lines of winter wheat in organic and conventional cropping systems

Döring, Thomas; Annicchiarico, Paolo; Clarke, Sarah; Haigh, Zoe; Jones, Hannah; Pearce, Helen; Snape, J. W.; Zhan, Jiasui; Wolfe, Martin S.

doi:10.1016/j.fcr.2015.08.009

Cited by 85 publications

(100 citation statements)

References 57 publications

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“…Dynamic management of genetic resources, achieved through the cultivation of genetically diverse populations such as CCPs, subjected to different environments and selective pressures, provides an excellent complementary tool with which to conserve the genetic diversity of agricultural crops (Paillard et al, 2000;Goldringer et al, 2001Goldringer et al, , 2006Porcher et al, 2004;Phillips and Wolfe, 2005;Döring et al, 2011). In addition, CCPs are widely used as a resource for selection (Clark et al, 2006;Jackson, 2011;Enjalbert et al, 2011;Goldringer et al, 2001Goldringer et al, , 2006Döring et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Evolutionary changes of weed competitive traits in winter wheat composite cross populations in organic and conventional farming systems

Bertholdsson

Weedon

Brumlop

et al. 2016

European Journal of Agronomy

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a b s t r a c tSeedling root and shoot growth in hydroponics and allelopathic activity using a bioassay have been studied in very diverse populations of winter wheat grown under either organic or conventional conditions for a number of generations and subjected only to natural selection. The study was conducted on seeds from generation 6 (F 6 ) and 11 (F 11 ) from three composite cross populations (CCPs) produced by the Organic Research Centre in the UK. Since the F 5 the populations were maintained under organic and conventional conditions in Germany. Two parallel populations were created from each CC, resulting in a total of six organic and six conventional CCPs. The sets of parallel populations showed similar evolutionary trends indicating that the observed changes are related to differences in management rather than chance. Seedling root length and seedling root and shoot weight in the F 11 of the organically-managed CCPs were significantly greater than in the organic F 6 CCPs. In the conventionally-managed CCPs no such differences were observed. Both organic and conventional CCPs produced for quality showed higher early root and shoot growth than those produced for yield pointing to genetic differences among population types and highlighting the importance of early vigour for NUE. There were no significant differences in the allelopathic activity of the populations and between generations. The Shannon-Weaver diversity indices were similar for the studied traits in organic and conventional CCPs and hence no major changes in diversity had occurred between F 6 to F 11 . As changes in plant height were small and weed pressure in the fields low it is concluded that the observed differences are more related to NUE, rather than intra-specific competition for light or the direct effect of increased weed pressure in the organic system.

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Section: Introductionmentioning

confidence: 99%

Evolutionary changes of weed competitive traits in winter wheat composite cross populations in organic and conventional farming systems

Bertholdsson

Weedon

Brumlop

et al. 2016

European Journal of Agronomy

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“…At the same time, three parents were high yielding while all the other varieties had very high quality. In spite of the careful selection of the varieties used for the development of CCPs/ mixtures, it could not necessarily be expected to reach high processing quality under organic or low-input conditions according to the previous studies (Döring et al 2015;Murphy et al 2005). This finding is also supported by the present study.…”

Section: Plant Originmentioning

confidence: 99%

“…These populations were studied together with three variety mixtures (MIX-AT (A), YQ-MIX (UK), NIAB-Elite-MIX (UK, NIAB-MIX)) and one diversity population from France (INRA-60parent-CCP called INRA-CCP in this paper). Development of YQ-CCP and YQ-MIX was explained in detail by Döring et al (2015). One winter wheat (Triticum aestivum L.) variety, Mv-Emese (H) was used as a 'common' control in all locations.…”

Section: Plant Materialsmentioning

confidence: 99%

“…YQ-CCP and YQ-MIX were developed in the UK using nine high-yielding and twelve high-quality wheat genotypes based on 190 crosses between them (Döring et al 2015). Similarly, NIAB-CCP and NIAB-MIX were developed using eight high-yielding and/or high quality modern varieties.…”

Section: Plant Originmentioning

confidence: 99%

“…An alternative approach to produce greater genetic diversity is to create composite cross-populations (CCP). These are developed by crossing a group of diverse parents, then growing and harvesting the subsequent generations as a bulk population (Suneson 1956;Döring et al 2015). It is already known that CCPs and variety mixtures have several physiological benefits when compared to less genetically diverse varieties.…”

Section: Introductionmentioning

confidence: 99%

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Stability analysis of wheat populations and mixtures based on the physical, compositional and processing properties of the seeds

Tremmel-Bede¹,

Mikó²,

Megyeri³

et al. 2016

Cereal Research Communications

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Six cropping populations, three variety mixtures and one diversity population were developed from winter wheat varieties and studied for physical, compositional and end-use quality traits for three years (2011)(2012)(2013) under different European climatic and management conditions in order to study the stability of these traits resulted by the genetic diversity. The beneficial compositional and nutritional properties of the populations were assessed, while variation and stability of the traits were analysed statistically. No significant differences were found among the populations in low-input and organic management farming systems in the physical, compositional and processing properties, but there was a difference in the stability of these traits. Most of the populations showed higher stability than the control wheat variety, and populations developed earlier had higher stability than those developed later. Furthermore, some populations were found to be especially unstable for some traits at certain sites (mostly at Austrian, Swiss and UK organic sites). Protein content of the populations was high (13.0-14.7%) without significant difference among them, but there was significant variation in their gluten content (28-36%) and arabinoxylan content (14.6-20.3 mg/g). The most outstanding population for both protein and arabinoxylan content was a Hungarian cropping population named ELIT-CCP. It was concluded that the diversity found in the mixtures and CCPs have stabilizing effect on the quality parameters, but a higher stability was observed under low-input than under organic conditions. These results could be beneficial not only for breeders but also for the consumers in the long run.

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Exploring the Systems Concept in Contemporary Organic Farming Research

Watson

Pearce

2019

The Science Beneath Organic Production

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Comparative analysis of performance and stability among composite cross populations, variety mixtures and pure lines of winter wheat in organic and conventional cropping systems

Cited by 85 publications

References 57 publications

Evolutionary changes of weed competitive traits in winter wheat composite cross populations in organic and conventional farming systems

Evolutionary changes of weed competitive traits in winter wheat composite cross populations in organic and conventional farming systems

Stability analysis of wheat populations and mixtures based on the physical, compositional and processing properties of the seeds

Exploring the Systems Concept in Contemporary Organic Farming Research

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