Agronomic evaluation and clonal selection of ginger genotypes (Zingiber officinale Roseoe) in Brazil

Abstract

The analysis of the genetic diversity of ginger based on agronomic traits is essential to know its performance and to design breeding programs. In this study, we analyzed the phenotypic variability of 61 accessions of the ginger germplasm collection of the "Luiz de Queiroz" College of Agriculture at the University of Sao Paulo (ESALQ/USP) in a complete randomized block design with four replications. An analysis of variance test was performed and genetic parameters such as heritability, genetic variance, environmental variance, genetic-environmental variation ratio (CVg/CVe) and genetic correlations were estimated. There were highly significant differences (P≤0.01) among the accessions for all the agronomic traits analyzed. The CVg/CVe ratio (>1), along with the high heritability (>80%), showed a significant contribution of genetic factors on the phenotypic expression of plant height, rhizome thickness and yield traits, favoring the clonal selection of genotypes. Accessions Gen-29, Gen-29, Gen-32, Gen-36, Gen-37, Gen-40, Gen-41, Gen-42, Gen-50 were selected due to the best agronomic performance when compared to the rest of the germplasm. The results obtained may be useful in future breeding programs in Brazil.

Agromorphological Characterization of Ginger (<i>Zingiber officinale</i> Rosc., Zingiberaceae) Accessions Grown in Côte d’Ivoire

“…Varietal selection relies on the genetic variability of species. Assessing the genetic diversity of ginger based on agronomic traits is essential for understanding its performance and designing breeding programs [17]. Morphological markers also form the basis for the identification and classification of plant species [23].…”

“…However, in Côte d'Ivoire, apart from the work on the genetic diversity of ginger carried out by [15], no study has yet been carried out on the distribution and agronomic characterization of this plant. Therefore, analysis of the genetic diversity of ginger based on agronomic traits is essential for understanding its performance and designing breeding programs [17].…”

In Vitro Microrhizome Production, Genetic Homogeneity Assessment, and Field Performance Evaluation in Ginger

“…Morphological parameters and production potential were investigated after approximately 160 days (harvest time) of growth in the field, including the plant height, tiller number, main tiller diameter, number of leaves per tiller, leaf length and width, rhizome length and width, number of rhizome fingers per plant, rhizome fresh weight, fresh weight and volume per rhizome finger, aboveground biomass per plant, root fresh weight per plant. Related data were collected following the descriptors reported by Zambrano Blanco and Baldin Pinheiro [42]. The leaf greenness index was determined on three fully expanded leaves per plant with a portable chlorophyll meter (SPAD-502 plus, Konica Minolta, Tokyo, Japan).…”