Comprehensive approach and molecular tools for breeding and production of ornamental crops

Dai, Silan; Song, Xuebin; Deng, Chengyan; Kang, Guolian; Li, Mengling; Ma, Chaofeng; Zhang, Mengmeng

doi:10.17660/actahortic.2019.1263.1

Cited by 4 publications

(2 citation statements)

References 105 publications

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“…In the breeding of ornamental plants; flower and leaf characteristics (color, size, number of petals, shape, etc. ), resistance to biotic and abiotic stress conditions, yield, suitability for transportation, propagation ability, vase life, flowering period are taken into consideration (Dai et al, 2019;Su et al, 2019;Van Huylenbroeck, 2020). Since the Kalanchoë genus is mainly used as a potted ornamental plant, most of its breeding studies focused on indoor use.…”

Section: Breeding Purposes and Methodsmentioning

confidence: 99%

Kalanchoë Breeding: Past, Present and Future

Kahraman¹,

Mendi

Karabıyık

et al. 2022

Ornam. Hortic.

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Kalanchoë cultivars rank as one of the most sold potted ornamental plants in the world. Among its key features that sustain high market interest are the long flowering period, abundance of flowers, thick and glossy leaves, easy maintenance and less water requirement compared to other potted plants. In breeding studies of Kalanchoë, plants with different flower colors such as white, cream, yellow, orange, red, pink and purple were developed. Moreover, double-flowered cultivars (comprising a large number of petals), more compact and cultivars with larger flowers were also obtained. Novel morphological characteristics are always in high demand in the market of ornamental plants. Increasing the variation in the gene pool with different species played a major role in the development of these characteristics. Nowadays, not only potted cultivars are launched but also cut flower cultivars have been developed and presented to consumers. Besides conventional breeding and interspecific hybridization, biotechnological methods, which have a promising future, are used to develop morphological characteristics of Kalanchoë.

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Section: Breeding Purposes and Methodsmentioning

confidence: 99%

Kalanchoë Breeding: Past, Present and Future

Kahraman¹,

Mendi

Karabıyık

et al. 2022

Ornam. Hortic.

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“…After its distribution to all parts of the world, chrysanthemum is being widely planted and cultivated, hence, becoming one of the most famous cut flowers with the most variety among ornamental plants. For flower gardening, the abundance of phenotypic variation in chrysanthemums is the highest among the world’s ornamental crops [ 3 , 4 ]. Its diversity with respect to flower type and color and plant architecture gives it high production value and a large economic market, particularly in the Asian and European flower industries [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

Phenotypic Characterization and RT-qPCR Analysis of Flower Development in F1 Transgenics of Chrysanthemum × grandiflorum

Haider

Bashir

Habib

et al. 2021

Plants

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Gene silencing is the epigenetic regulation of any gene in order to prevent gene expression at the transcription or translation levels. Among various gene silencing techniques, RNA silencing (RNAi) is notable gene regulation technique that involves sequence-specific targeting and RNA degradation. However, the effectiveness of transgene-induced RNAi in F1 generation of chrysanthemum has not been studied yet. In the current study, we used RNAi-constructed CmTFL1 (white-flowered) and CmSVP overexpressed (yellow flowered) transgenic plants of previously conducted two studies for our experiment. Cross hybridization was performed between these intergeneric transgenic and non-transgenic plants of the winter-growing chrysanthemum selection “37” (light pink flowered). The transgene CmSVP was confirmed in F1 hybrids by RT-PCR analysis, whereas hybrids of CmTFL1 parental plants were non-transgenic. Besides this, quantitative real-time PCR (qPCR) was used to explain the molecular mechanism of flower development using reference genes. Intergeneric and interspecific hybrids produced different colored flowers unlike their respective parents. These results suggest that generic traits of CmSVP overexpressed plants can be transferred into F1 generations when crossed with mutant plants. This study will aid in understanding the breeding phenomenon among intergeneric hybrids of chrysanthemum plants at an in vivo level, and such transgenics will also be more suitable for sustainable flower yield under a low-light production system.

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Morpho-metric characterization and genetic variability studies in chrysanthemum

Kumar

Hiremath

Tiwari

et al. 2021

Plant Genet. Resour.

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Germplasm characterization is essential to estimate variation and identify desirable genotypes for crop improvement. The current study was conducted on eight qualitative and 14 quantitative traits related to growth and floral attributes for characterization and grouping of 54 chrysanthemum genotypes. Wide variability was observed among most of the traits and principal component analysis revealed that the first two principal components explained most of the existing variation (>98%) in germplasm. Genotypic coefficient of variation exhibited a wide range from 9.41% (ratio of leaf length/width) to 105.99% (corolla tube length of ray florets), while phenotypic coefficient of variation varied from 10.49% (ratio of leaf length/width) to 106.38% (corolla tube length of ray florets). Broad sense heritability estimates were higher (>96%) for most of the characters, except for traits such as ratio of leaf length/width and peduncle thickness. Forty-four pair-wise inter-trait combinations showed positive genotypic and phenotypic correlations for 91 possible combinations. D2 analysis revealed that genotypes of clusters I and IV to be highly distinct, and hybridization between them might have better chance to obtain desirable types. D2 analysis confirmed that the cultivars in cluster IV namely, Red D Spoon, Tokyo Soldier, Yellow Reflex and hierarchical clustering showed that the cultivar Tokyo Soldier to be highly diverse. It is recommended to use the above genotypes in crossing programme for obtaining better progenies.

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Comprehensive approach and molecular tools for breeding and production of ornamental crops

Cited by 4 publications

References 105 publications

Kalanchoë Breeding: Past, Present and Future

Kalanchoë Breeding: Past, Present and Future

Phenotypic Characterization and RT-qPCR Analysis of Flower Development in F1 Transgenics of Chrysanthemum × grandiflorum

Morpho-metric characterization and genetic variability studies in chrysanthemum

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