Multivariate Assessment of Genetic Relationships between Two Streptocarpus Cultivars and Their F1 Progenies Using Morphological Characteristics and SCoT Molecular Markers

Abstract

Streptocarpus is a very popular houseplant with colorful flowers, and has thus piqued the curiosity of plant enthusiasts and breeders. In this study, “Natalie” and “Bristol’s Gum Drop” were artificially hybridized to study the influence of the parental reciprocal crosses (P1×P2 and P2×P1) on vegetative and generative morphological traits of F1 progeny. Mean comparisons for morphological characters of parents and F1 plants from both crosses revealed that F1 plants were able to express hybrid vigor for several valuable morphological characteristics. Pearson correlations showed both significant negative and positive correlations between morphological traits of F1 plants from P1×P2 cross, while in the case of P2×P1 no significant negative correlations were observed (p < 0.05). The Start Codon Targeted (SCoT) genetic profiles of the F1 plants with the identifiers P1×P2.19 and P1×P2.35 were remarkably similar, and they grouped with the maternal parent in a small group, supporting the findings of clustering based on morphological data. The parental combination P2×P1 revealed the presence of closely related progenies to the paternal parent, namely P2×P1.16 and P2×P1.5. Two F1 plants named P1×P2.33 and P2×P1.21 were selected based on their phenotypic characteristics and SCoT molecular fingerprinting. These selected genotypes will be tested in our future breeding programs with the aim to create and promote new valuable Streptocarpus cultivars.

Phenotypic Variation in Flower Color and Morphology in the Gerbera (Gerbera hybrida) F1 Hybrid Population and Their Association with EST-SSR Markers

“…Understanding the inheritance patterns of key ornamental traits can provide insights into more effective genetic breeding. The inheritance patterns of ornamental traits in various plants, such as Streptocarpus [ 25 ], Lilium [ 26 ], Chrysanthemum [ 27 , 28 , 29 , 30 ], and Hedychium [ 31 , 32 ], have been examined. The study of floral trait inheritance patterns in Asteraceae ornamental plants is a popular research topic, with the inheritance patterns of several traits, such as flower type, being clarified [ 29 , 30 ].…”

“…Understanding the inheritance patterns of key ornamental traits can provide insights into more effective genetic breeding. The inheritance patterns of ornamental traits in various plants, such as Streptocarpus [25], Lilium [26], Chrysanthemum [27][28][29][30], and Hedychium [31,32], have been examined. The study of floral trait…”

Organogenesis and Antioxidant Capacity of Streptocarpus ×hybridus In Vitro under Different LED Light Spectrum Composition

“…In fact, in vitro shoot proliferation is usually used for mass propagation and for year-round production [13]. Due to its beautiful flowers, the plant is important to the horticultural sector and is extensively cultivated worldwide [14]. The potential value of Streptocarpus may be much higher than its exclusive use as an ornamental plant.…”