Research Article Genetic diversity among accessions of Capsicum annuum L. through morphoagronomic characters

Abstract

Genetic variability among pepper genotypes is essential in obtaining hybrid combinations with greater heterotic effect and in obtaining superior strains. This work's goal was to evaluate the genetic diversity between accessions of Capsicum annuum L., indicating the selection of promising individuals for ornamental purposes. The experiment was carried out in at the Plant Biotechnology Laboratory of the Center of Agricultural Sciences, Federal University of Paraíba. The experiment was conducted in a completely randomized design with 16 treatments and eight replications. The plants were evaluated for 28 morphoagronomic traits. Data were submitted to analysis of variance and grouped according to Scott and Knott's test at 1% probability. The Tocher grouping was performed based on Mahalanobis distance and analysis of canonical variables was performed with graphical dispersion of the accessions. All variables were significant by the F test (p=0.01) and presented high heritability and a CVg/CVe ratio higher than 1.0 for most traits, indicating genetic divergence between accessions. In keeping with the Scott-Knott's test (p=0.01), the accessions were grouped into two to eight classes, varying according to the character. The of Tocher optimization method separated the accessions into five distinct groups. There is phenotypic divergence between the accessions of Capsicum annuum L. which can be used in ornamental peppers' breeding programs. Only the number of stamens trait presented a heritability value (65.81%) lower than 70%. The characters that most contributed to divergence among the accessions were fresh fruit mass, stem diameter, widest fruit diameter and fruit weight. The accessions UFPB001, UFPB004, UFPB45, UFPB77.3, UFPB099, UFPB134, UFPB390 and Calypso are designated as potential accessions for ideal ornamental pepper plant with vigorous seedling, small port, large flowers and small fruits. Ornamental pepper accessions with larger anthers are indicated for selection, for facilitating the breeder's work during flower emasculations for crossings.

Genetic diversity in Capsicum and Solanum genotypes based on morphoagronomic characters

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Evaluasi Karakter Kualitatif dan Kuantitatif Cabai Hias (Capsicum annuum L.) IPB

“…Buah merupakan salah satu bagian tanaman yang menjadi Keterangan : angka yang diikuti huruf yang sama pada kolom yang sama menunjukkan hasil yang tidak berberda nyata menurut uji DMRT 5%. (Santos Pessoa et al, 2018).…”

Content of Capsaicinoids and Capsiate in “Filius” Pepper Varieties as Affected by Ripening

“…Therefore, they should exhibit some remarkable morphological characteristics that support their aesthetic value, such as small, erect, and colorful fruits that present a color contrast with the foliage over the whole ripening process. Other positive features would include: vivid foliage, easiness to grow, long durability and the possibility of being grown in small pots [ 29 , 30 , 31 ]. The subsequent search for new shapes and colors as well as new flavors when used as food encouraged their cultivation and commercialization.…”