Non-parametric indexes in selecting hybrids of chili pepper

Abstract

On Solanaceae, the use of hybrids in seed market has been consolidated in recent decades, especially for sweet pepper and tomato crops. However, other crops such as chili peppers (Capsicum spp.) are still neglected by breeding programs which aim to obtain hybrids. The objectives of this work were to evaluate experimental chili pepper hybrids dedo-de-moça (C. baccatum var. pendulum) in relation to production and quality of fruits in two growing seasons and to compare non-parametric selection indexes based on these aspects. Eight chili pepper genotypes were evaluated, being three experimental hybrids (HP03, HP04 and HP08), three lineages (PIM01, PIM02 and PIM03) and two commercial cultivars as controls (‘BRS Mari’ and ‘Ibirajá’), under field conditions in two growing seasons (autumn/winter and spring/summer) in the municipality of Campos dos Goytacazes, Rio de Janeiro state, Brazil. The number of days to flowering, number of fruits per plant, average fruit mass, fruit length, fruit diameter, yield, fruit dry mass, titratable acidity, ascorbic acid and soluble solids content were evaluated. A highly significant difference among genotypes for all evaluated parameters was obtained. Significant interaction was observed for genotypes x growing seasons only for fruit length, fruit dry mass and ascorbic acid content, considering the last two ones of a complex nature. Chili pepper hybrids tested had a constant performance in the two growing seasons based on agronomic and physicochemical characteristics. By the selection indexes used, the superiority of the hybrid HP03 in relation to the other evaluated genotypes was verified. In addition to the evaluated agronomic and physicochemical parameters, this hybrid stands out for having a differentiated and innovative shape of chili pepper, since no such hybrid has been found in the Brazilian market until then. Mulamba & Mock and Genotype-Ideotype selection indexes were concordant in the selection of the three best genotypes.

Atributos genéticos dos frutos de pimenteira ornamental para seleção

“…Portanto, a identificação desses genótipos por meio deste índice demonstra superioridade em relação aos demais. Medeiros et al, (2018) (1978). Unimontes, Janaúba-MG, Brasil, 2024.…”

Respuesta del chile Huacle (Capsicum annuum L.) al estrés hídrico bajo invernadero

“…Respecto al porcentaje de acidez titulable se presentó un intervalo de 1.47 a 2.49 (Cuadro 4), mostrando diferencias significativas (P≤0.05) entre los tratamientos sin acolchados, contario a los tratamientos con acolchado ya que estos no presentaron diferencias entre ellos. A pesar de ello, todos los valores fueron mayores a los encontrado por Medeiros et al (2018) y Manikharda et al (2018) en ocho genotipos de C. baccatum var. pendulum y tres estados de madurez de un genotipo de C. frutescens.…”

The potential and the quality of several open pollinated chili varieties seed production

“…Information related to seeds of various chili such as Habanero chili and Katokkon chili (Capsicum chinense Jacq.) [22,23], Ancho and Guajillo chili (Capsicum annuum L.) [24][25][26], Capsicum frutescens L. [27,28], Capsicum baccatum [29] have been reported. Likewise, reports related to seed productions of local chili varieties (Odeng, Lanyoe, Super Amando, and Lamando Lapaben from Aceh [30]; Katokkon chili from Sulawesi [23]; Pulau Timor [31]) or nasional varieties (IPB CH1, IPB CH2, IPB CH3, IPB CH4, IPB CH5, IPB CH6, IPB CH25, IPB CH28, and IPB CH50 varieties owned by IPB University [32]; UNIB C H73, UNIB C H65, and UNIB C H13 varieties owned by Universitas Bengkulu [33]; CK5 variety owned by Universitas Padjadjaran [31]; PM999, Kiyo [34], or Arimbi [35] varieties owned by private companies have also been reported.…”