Genetic Erosion: Context Is Key

Rogers, Deborah L.; McGuire, Patrick E.

doi:10.1007/978-3-319-25637-5_1

Cited by 6 publications

(7 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The culmination of these developments to the use of sequence data is very important because opportunities are now available to genetically characterize inbred lines, hybrids and populations, including landraces utilizing a common global genetic "language." Studies of hybrid diversity It is challenging, yet vital to monitor genetic diversity during selection (NRC 1972(NRC , 1993Rogers and McGuire 2015;Brown and Hodgkin 2015;CGC 2018). However, the ideal is difficult, if not impossible to achieve due to (1) the complexity of the maize genome, (2) G × G and G × E interactions in phenotypic expressions and (3) the difficulty in predicting useful future traits.…”

Section: Maize Germplasm: Diversity and Utilizationmentioning

confidence: 99%

Technological advances in maize breeding: past, present and future

Andorf¹,

et al. 2019

View full text Add to dashboard Cite

Maize has for many decades been both one of the most important crops worldwide and one of the primary genetic model organisms. More recently, maize breeding has been impacted by rapid technological advances in sequencing and genotyping technology, transformation including genome editing, doubled haploid technology, parallelled by progress in data sciences and the development of novel breeding approaches utilizing genomic information. Herein, we report on past, current and future developments relevant for maize breeding with regard to (1) genome analysis, (2) germplasm diversity characterization and utilization, (3) manipulation of genetic diversity by transformation and genome editing, (4) inbred line development and hybrid seed production, (5) understanding and prediction of hybrid performance, (6) breeding methodology and (7) synthesis of opportunities and challenges for future maize breeding.

show abstract

Section: Maize Germplasm: Diversity and Utilizationmentioning

confidence: 99%

Technological advances in maize breeding: past, present and future

Andorf¹,

et al. 2019

View full text Add to dashboard Cite

show abstract

“…The adoption of procedures, such as collecting tillers in large areas and in different populations, planting tiller of different populations in close proximity to facilitate sexual reproduction, when possible, guide tiller collection based on studies on the genetic structure of donor populations and associating vegetative propagation with sexual reproduction can significantly reduce the loss of genetic diversity in populations propagated predominantly by vegetative means. (Vellend 2006, Sommerville et al 2013Rogers and Mcguire 2015).…”

Section: Discussionmentioning

confidence: 99%

Propagation and establishment of rupestrian grassland grasses for restoration of degraded areas by mining

et al. 2018

View full text Add to dashboard Cite

Investigations on the propagation and establishment of native grasses of rupestrian grassland on degraded substrates are essential to enable their use in the restoration of degraded areas, thus reducing the use of exotic species. This study aimed to evaluate the sexual and asexual propagation, establishment and growth of Axonopus laxiflorus (Trin.) Chase and Sporobolus metallicolus Longhi-Wagner & Boechat, two native grasses from rupestrian grassland developed on laterite substrate of an area degraded by bauxite mining. In greenhouse experiments, A. laxiflorus was propagated by tillers and S. metallicolus by seeds and tillers. Both species were also evaluated for germination in a germination chamber on the treatments: control, addition of potassium nitrate and heating at 80°C for 2 min. In these evaluations, success of S. metallicolus germination was between 77 and 90%, without significative difference among treatments, whereas A. laxiflorus did not germinate. In the laterite substrate, S. metallicolous, propagated by seeds, showed 29% of survival, whereas in the vegetative propagation all plants of the two species survived. Eight months after starting the tiller experiment, S. metallicolus and A. laxiflorus presented a biomass increase of 239 and 75%, respectively. Although A. laxiflorus showed root biomass approximately seven times higher than S. metallicolus, the two species presented similar root length, that is, S. metallicolus contained more fine roots. The results show that the species can efficiently propagate vegetatively and, in the case of S. metallicolus, sexually. The success of the species in a substrate poor in nutrients and rich in Al, Fe and Mn indicates that they can be used in the restoration of areas degraded by bauxite and iron mining, which are important mining activities in Brazil.

show abstract

“…It is also important to minimize artificial selection during cleaning (Basey et al 2015; Rogers & McGuire 2015). To avoid overcleaning, one should monitor seed quality carefully, to distinguish between traits that may indicate low seed viability versus genetic variability.…”

Section: Seed Cleaningmentioning

confidence: 99%

“…To avoid overcleaning, one should monitor seed quality carefully, to distinguish between traits that may indicate low seed viability versus genetic variability. Minor differences in seed morphological traits can reflect genetic differences that may be important for plant survival and recruitment, particularly for plant populations in variable and dynamic environments (Basey et al 2015; Rogers & McGuire 2015). Evaluating a sub‐sample for seed quality after each cleaning step (e.g.…”

Section: Seed Cleaningmentioning

confidence: 99%

Ensuring seed quality in ecological restoration: native seed cleaning and testing

Frischie

Miller

Pedrini

et al. 2020

Restoration Ecology

View full text Add to dashboard Cite

Seeds are a critical and limited resource for restoring biodiversity and ecological function to degraded and fragmented ecosystems. Cleaning and quality testing are two key steps in the native seed supply chain. Optimizing the practices used in these steps can ensure seed quality. Post‐collection handling of seeds can have a profound impact on their viability, longevity in storage, and establishment potential. The first section of this article describes seed cleaning, outlines key considerations, and details traditional and novel approaches. Despite the growth of the native seed industry and the need for seed quality standards, existing equipment and standards largely target agricultural, horticultural, and commercial forestry species. Native plant species typically have complex seed traits, making it difficult to directly transfer existing cleaning and quality standards to these species. Furthermore, in ecological restoration projects, where diversity is valued over uniformity crop standards can be unsuitable. We provide an overview and recommendations for seed quality testing (sampling, purity, viability, germinability, vigor), identity reporting, and seed transfer as well as highlight the need to implement internationally recognized standards for certification for native seeds. Novel and improved cleaning and testing methods are needed for native species from a range of ecosystems to meet the challenges and goals of the United Nations Decade on Ecosystem Restoration. The guidelines outlined in this article along with others in the Special Issue of Restoration Ecology “Standards for Native Seeds in Ecological Restoration” can serve as a foundation for this critical work.

show abstract

Genetic Erosion: Context Is Key

Cited by 6 publications

References 45 publications

Technological advances in maize breeding: past, present and future

Technological advances in maize breeding: past, present and future

Propagation and establishment of rupestrian grassland grasses for restoration of degraded areas by mining

Ensuring seed quality in ecological restoration: native seed cleaning and testing

Contact Info

Product

Resources

About