Special Issue "Advances in Asparagus Production, Genomics and Breeding"
Deadline for manuscript submissions: 15 August 2022 | Viewed by 1062
Interests: plant breeding, polyploidy, genetic variability, hybridization, introgression, molecular markers, flow cytometry.
Interests: breeding, genetic mapping, molecular markers, polyploids
Interests: bioinformatics; breeding; gene expression; genetics; NGS, qPCR
Special Issues, Collections and Topics in MDPI journals
Garden asparagus (Asparagus officinalis) is an important horticultural crop with a cultivated area comparable to other vegetable crops such as garlic, carrot and eggplant. In the last few decades, a steady increase in crop yield has been boosted by the implementation of advances in crop production, protection techniques, and the development of new asparagus varieties. However, a number of biotic and abiotic stresses affect the crop, which may cause serious damage. Besides this, new challenges have recently emerged, such as the development of varieties with a high concentration of functional compounds or varieties that are suitable for other crop systems (e.g., drought conditions, organic farming). The availability of a saturated genetic map, transcriptomic data and the asparagus reference genome sequence, along with the improved bioinformatics tools, creates new prospects for the biological understanding of important agronomic traits in this crop. For this Special Issue, we welcome any original research or review articles that highlight recent advances in different disciplines related to crop production, genomics, and plant breeding.
Dr. Roberto Moreno
Dr. Patricia Castro
Dr. Jose Die
Manuscript Submission Information
Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.
Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Horticulturae is an international peer-reviewed open access monthly journal published by MDPI.
Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.
- yield, cropping system, organic fam, genetic mapping, molecular markers, bioinformatics
- gene expression
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Planned paper 1:
Tentative Title: Development and diversity analysis of a diploid pre-breeding asparagus population carrying germplasm from the tetraploid landrace ‘Morado de Huétor’.
Tentative Abstract: A narrow genetic base has been pointed out for the current asparagus (Asparagus officinalis L.) cultivars because of their common origin, a diploid population (‘Purple Dutch’). The current study aims at generating novel plant material to widen the genetic base of the crop by using a tetraploid landrace ‘Morado de Huétor’ (A. officinalis x A. maritimus). With this purpose, a diploid population of about 1000 plants with introgressions of this landrace has been obtained. This population is the second generation from a first backcrossing using different diploid cultivated plants as recurrent parent. This population was obtained in open pollination. The diversity of this population was analyzed by six EST-SSR (Expressed Sequence Tag-Simple Sequence Repeat) markers. A random sampling of 57 plants was used to estimate the genetic variability. The results were compared with data previously obtained from the parental collection, the landrace ‘Morado de Huétor’ and diploid current asparagus cultivars. The average PICm (polymorphic information content) value of the new population (0.75) was higher than the value observed in the diploid cultivars (0.63) but lower than ‘Morado de Huétor’ (0.83). Twenty-Two alleles (28.2%) detected in the new diploid population were specific from ‘Morado de Huétor’. Principal coordinate analyses (PCoA) revealed for this new population a different genetic variability distribution than current cultivars. The population of 1000 plants was also evaluated for different morpho-agronomic traits (earliness, stalk number, branching height and stalk thickness) for two years. As result, it was selected 67 plants to develop a breeding base population. Variation was significant for all traits (P<0.001). These 67 plants were also analyzed with the six EST-SSR markers and a similar genetic variability than the starting population was obtained. The results show an increase in the genetic variability and offer a new opportunity for diploid asparagus improvement.
Planned paper 2:
Tentative title: Combining Ability and Heterosis for Market Yield in Green Asparagus
Abstract: In asparagus current cultivars are mostly hybrids (known as clonal hybrids) derived from crosses between two parents, female and male, with good combining ability. Despite the fact that clonal hybrids have been obtained for more than 40 years, studies of the heterosis and combining abilities involved are limited. Similarly, there are no published studies regarding the association between genetic divergence and heterosis. In this sense we evaluated for marketable green asparagus production two sets of diallel crosses including 12 accesions from 11 different origins. Parentals were also included in a way to assess heterosis. The variation for market yield was highly significant for both sets. Best parent heterosis was over 100% in four cases. The best experimental hybrid did not significant differ from the Atticus F1 all-male check. The general combining ability (GCA) and specific combining ability (SCA) were significant, with a relative greater contribution of the SCA than the GCA to the variation among crosses. The association between genetic distances and heterosis failed to be significant. The best experimental hybrids were obtained when UC157 and KBF (USA and UK origins) were crossed to Argenteüil, Limburgia and Espárrago de Navarra (French, Netherlands and Spain origins).
Keywords: heterosis; genetic distance; marketable yield; combining ability