Multicategorical descriptors for creole genotypes of Amazon chicory (Eryngium foetidum)

Rafaelle F Gomes,Viviane P Gonçalves,Lucas Da S Santos,Renata Da S Arruda

doi:10.1590/s0102-053620200316

Rafaelle F Gomes, Viviane P Gonçalves + Show 2 more

Open Access

https://doi.org/10.1590/s0102-053620200316

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Abstract

ABSTRACT The knowledge concerning genetic variability of creole genotypes by using morphological descriptors in species such as Amazon chicory is crucial to quantify local diversity and protect improved cultivars. Accordingly, this study aimed to propose multicategory leaf morphological descriptors for Amazon chicory species. To achieve that, an experiment was arranged in randomized block design with four repetitions. The treatments comprised eight creole genotypes of Amazon chicory, which were obtained from local producers’ collection. The proposed multi-categorical descriptors are based on limb shape, leaf apex shape, leaf base shape, leaf margin, bract consistency, and bract margin traits. Once the multicategorical clustered data were obtained, they were transformed into a dissimilarity matrix. The limb shape presents dissimilarity, being either lanceolate or spatulate; as well as for leaf margin, which can be dentate or serrate. Thus, both limb shape and leaf margin constitute important qualitative descriptors for genetic diversity assessment and conservation for Amazon chicory, besides a recommended tool to be exploited in breeding programs.

Highlights

Conhecer a variabilidade genética de genótipos crioulos, por meio do uso de descritores morfológicos em espécies como a chicória da Amazônia, é uma ferramenta imprescindível no processo de quantificação da diversidade de variedades locais e na proteção de cultivares melhoradas
It is referenced as Pará chicory, Amazon chicory, coriander, nhambi or wild coriander, and in some countries as culantro (Gomes et al, 2013)
The demands about Amazon chicory studies related to its use and preservation were firstly reported by Cardoso & Garcia (1997), which claimed the importance of consumption and conservation of genetic resources from vegetables available in the Amazon, since important attributes are included, such as nutritional, ecological, agronomic, and cultural values, besides food security and employment availability

Summary

Introduction

Conhecer a variabilidade genética de genótipos crioulos, por meio do uso de descritores morfológicos em espécies como a chicória da Amazônia, é uma ferramenta imprescindível no processo de quantificação da diversidade de variedades locais e na proteção de cultivares melhoradas. Objetivou-se propor descritores morfológicos multicategóricos foliares para a chicória da Amazônia. As características de formato do limbo e margens foliares se mostraram descritores qualitativos importantes na quantificação da diversidade genética, conservação e uso nos programas de melhoramento da chicória da Amazônia. Chicory (Eryngium foetidum) is a species belonging to the Apiaceae family, being classified as an unconventional vegetable. Rodriguez et al (2005) stated that the characterization of germplasm bank is a primary and important connection between conservation and use of plant genetic resources, in a manner that the local genetic variability is properly studied, preserved, and exploited in view of community benefits

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