Interspecific and intergeneric hybridization in Bromeliaceae and their relationships to breeding systems

Souza, Everton Hilo de; Versieux, Leonardo M.; Souza, Fernanda Vidigal Duarte; Rossi, Mônica Lanzoni; Costa, Mirco; Martinelli, Adriana Pinheiro

doi:10.1016/j.scienta.2017.04.027

Cited by 29 publications

(28 citation statements)

References 42 publications

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“…It has been shown that interspecific, as well as intergeneric experimental hybridization within core Bromelioideae, is possible (e.g. Zhang et al, 2012;Souza et al, 2017), and rare natural hybridization events (Furtado et al, 2003;Wendt et al, 2008;Matallana et al, 2016) are important drivers of evolution in the group (Goetze et al, 2016). Hence, uniform genomes in terms of genome size and chromosome number could be considered favorable for gene flow as chromosomal and genomic uniformity usually facilitates chromosome pairing and recombination (e.g.…”

Section: Discussionmentioning

confidence: 99%

Early Diverging and Core Bromelioideae (Bromeliaceae) Reveal Contrasting Patterns of Genome Size Evolution and Polyploidy

et al. 2020

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The subfamily Bromelioideae is one of the most diverse groups among the neotropical Bromeliaceae. Previously, key innovations have been identified which account for the extraordinary radiation and species richness of this subfamily, especially in the so-called core Bromelioideae. However, in order to extend our understanding of the evolutionary mechanisms, the genomic mechanisms (e.g. polyploidy, dysploidy) that potentially underlie this accelerated speciation also need to be tested. Here, using PI and DAPI staining and flow cytometry we estimated genome size and GC content of 231 plants covering 30 genera and 165 species and combined it with published data. The evolutionary and ecological significance of all three genomic characters was tested within a previously generated dated phylogenetic framework using ancestral state reconstructions, comparative phylogenetic methods, and multiple regressions with climatic variables. The absolute genome size (2C) of Bromelioideae varied between 0.59 and 4.11 pg, and the GC content ranged between 36.73 and 41.43%. The monoploid genome sizes (Cx) differed significantly between core and early diverging lineages. The occurrence of dysploidy and polyploidy was, with few exceptions, limited to the phylogenetically isolated early diverging tank-less lineages. For Cx and GC content Ornstein-Uhlenbeck models outperformed the Brownian motion models suggesting adaptive potential linked to the temperature conditions. 2C-values revealed different rates of evolution in core and early diverging lineages also related to climatic conditions. Our results suggest that polyploidy is not associated with higher net diversification and fast radiation in core bromelioids. On the other hand, although coupled with higher extinction rates, dysploidy, polyploidy, and resulting genomic reorganizations might have played a role in the survival of the early diverging bromelioids in hot and arid environments.

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Section: Discussionmentioning

confidence: 99%

Early Diverging and Core Bromelioideae (Bromeliaceae) Reveal Contrasting Patterns of Genome Size Evolution and Polyploidy

et al. 2020

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“…Female parents were emasculated beforehand and then pollinated artificially by dipping the dried pollen into stigmas. Then, pollinated flowers were covered by waxed paper bags 84–86 . Hybrid seeds were collected in mid-July after fruits became red, and they were immediately sown in seedbeds or pots.…”

Section: Methodsmentioning

confidence: 99%

Evaluating the Comprehensive Performance of Herbaceous Peonies at low latitudes by the Integration of Long-running Quantitative Observation and Multi-Criteria Decision Making Approach

Zhang

Wang

Zhang

et al. 2019

Sci Rep

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Enlarging the planting area of economic plants, such as the “Southward Planting of Herbaceous Peony” (Paeonia lactiflora. Pall), is significant for improving people’s lives. Peony is globally known as an ornamental because of gorgeous flowers and is mainly cultivated in the temperate regions with relatively cool and dry climates in the Northern Hemisphere. Promoting the landscape application of peony to the lower latitude regions is difficult because of the hot-humid climate. In this study, 29 northern peony cultivars and a unique Chinese southern peony, ‘Hang Baishao’, were introduced to Hangzhou, located in the central subtropics. Annual growth cycles, resistances and dormancy durations were measured, and crossbreeding between the southern and northern peonies was performed for six years, from 2012 to 2017. Based on data collected from the long-running quantitative observation (LQO), a multi-criteria decision making (MCDM) system was established to evaluate the comprehensive planting performance of these 30 cultivars in the central subtropics. ‘Qihua Lushuang’, ‘Hang Baishao’ and ‘Meiju’ were highly recommended, while ‘Zhuguang’ and ‘Qiaoling’ were scarcely recommended for the Hangzhou landscape. This study highlights the dependability and comprehensiveness of integrating the LQO and MCDM approaches for evaluating the introduction performance of ornamental plants.

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“…Culture medium consisted of garden soil:peat:perlite at 7:2:1 by volume. Annual growth cycles of the three cultivars were observed and compared from 2011 or 2012 to 2017 to collect enough information needed for subsequent hybridization and forcing culture [23]. A randomized complete block experimental design with three blocks and three technical replicates per block was used.…”

Section: Methodsmentioning

confidence: 99%

“…Two northern cultivars were emasculated and then pollinated artificially by dipping the stigma into dried pollen or by using a cotton swab to place the pollen onto the stigma. The pollinated whole flowers were immediately covered with waxed paper bags and labeled [23,33,34]. Hybrid seeds were collected in mid-July when they were fully ripe (follicles became red) and immediately sown in a seedbed or in one-gallon pots (five seeds per pot, filled with 7 parts garden soil:2 parts peat:1 part perlite by volume).…”

Section: Methodsmentioning

confidence: 99%

Annual growth cycle observation, hybridization and forcing culture for improving the ornamental application of Paeonia lactiflora Pall. in the low-latitude regions

Zhang

et al. 2019

PLoS ONE

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Expanding the southern range of herbaceous peony ( Paeonia lactiflora Pall.) is a meaningful and worthwhile horticultural endeavor in the Northern Hemisphere. However, high temperatures in winter seriously hinder the bud dormancy release and flowering of peony in the more southern areas of subtropical and tropical regions. Resource introduction and hybridization can contribute to creating new cultivars with high adaptability in a warmer winter climate. In this study, three representative cultivars of P . lactiflora were screened for flowering capabilities and their annual growth cycles were observed to provide information needed for hybridization. Among these three cultivars, ‘Hang Baishao’ is the best adapted cultivar for southern growing regions and is unique in its ability to thrive in southern areas of N 30°00’. Pollen viability of ‘Hang Baishao’ was 55.60% based on five measuring methods, which makes it an excellent male parent in hybridization. Hybrid plants among these three cultivars grew well, but all of their flower buds aborted. Additionally, the ability of three growth regulators that advance the flowering of ‘Hang Baishao’ to promote an indoor cultivation strategy for improving peony application as a potted or cut-flower plant was tested. 5-azacytidine could impact the growth of ‘Hang Baishao’ and induce dwarfism and small flowers but not advance the flowering time. Gibberellin A 3 promoted the sprouting and growth significantly, but all plants eventually withered. Chilling at 0–4°C for four weeks and irrigation with 300 mg/L humic acid was the optimal combination used to hasten flowering and ensure flowering quality simultaneously. These results can lay the foundation for future studies on the chilling requirement trait, bud dormancy release and key functional gene exploration of herbaceous peony. Additionally, this study can also provide guidance for expanding the range of economically important plants with the winter dormancy trait to the low-latitude regions.

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Interspecific and intergeneric hybridization in Bromeliaceae and their relationships to breeding systems

Cited by 29 publications

References 42 publications

Early Diverging and Core Bromelioideae (Bromeliaceae) Reveal Contrasting Patterns of Genome Size Evolution and Polyploidy

Early Diverging and Core Bromelioideae (Bromeliaceae) Reveal Contrasting Patterns of Genome Size Evolution and Polyploidy

Evaluating the Comprehensive Performance of Herbaceous Peonies at low latitudes by the Integration of Long-running Quantitative Observation and Multi-Criteria Decision Making Approach

Annual growth cycle observation, hybridization and forcing culture for improving the ornamental application of Paeonia lactiflora Pall. in the low-latitude regions

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