Selection of Myrciaria dubia clones under conditions of the savanna/forest transition of Roraima through multivariate analysis ; Selección de clones de Myrciaria dubia en condiciones de transición sabana/bosque en Roraima mediante análisis multivariado

Camu-camu (Myrciaria dubia), a fruit from the Amazon region, has received attention due to its high content of antioxidant compounds such as ascorbic acid and polyphenols. This study’s objective was to select camu-camu clones according to their morphological characteristics using multivariate analyses. We evaluated 56 camu-camu clones distributed in three blocks with two plants per experimental plot. The variables measured were plant height (H), number of basal branches (NBB), number of terminal buds (NTB), basal stem diameter (BSD), chlorophylls a (Chl a) and b (Chl b), and total chlorophyll... Mehr ...

Verfasser: Tadashi Sakazaki, Roberto
Alves Chagas, Edvan
Abanto-Rodriguez, Carlos
Cardoso Chagas, Pollyana
Rocha de Araujo, Maria da Conceição
Lopes Monteiro Neto, João Luiz
Grigio, Maria Luiza
Carvalho Zborowski, Luiz Guilherme
da Silva Siqueira, Raphael Henrique
Erazo Amaya, Jorge Zamir
Dokumenttyp: Artikel
Erscheinungsdatum: 2022
Verlag/Hrsg.: Universidad Nacional de Colombia - Sede Bogotá - Facultad de Ciencias Agrarias
Schlagwörter: pruebas clonales / domesticación / mejoramiento genético / camu-camu / fruta nativa / clonal tests / domestication / genetic improvement / native fruit
Sprache: Englisch
Permalink: https://search.fid-benelux.de/Record/base-29248343
Datenquelle: BASE; Originalkatalog
Powered By: BASE
Link(s) : https://revistas.unal.edu.co/index.php/agrocol/article/view/100319

Camu-camu (Myrciaria dubia), a fruit from the Amazon region, has received attention due to its high content of antioxidant compounds such as ascorbic acid and polyphenols. This study’s objective was to select camu-camu clones according to their morphological characteristics using multivariate analyses. We evaluated 56 camu-camu clones distributed in three blocks with two plants per experimental plot. The variables measured were plant height (H), number of basal branches (NBB), number of terminal buds (NTB), basal stem diameter (BSD), chlorophylls a (Chl a) and b (Chl b), and total chlorophyll (Chl a + b). Principal component (PCA) and multivariate clustering analyses were performed using the average linkage mean and Mahalanobis distance algorithms. After 24 months, results showed that the characteristic that least contributed to clone selection was NBB. The plant height (H), number of terminal buds (NTB), basal stem diameter (BSD), chlorophylls a (Chl a) and b (Chl b), and total chlorophyll (Chl a + b) had the most positive contribution towards the initial selection of camu-camu clones at two years of age. The 22 camu-camu clones showed the highest rate of vegetative development or vegetative quality index (VQI) in the transitional savanna/forest area of the northern Amazon, Brazil, after two years of transplanting. ; El camu-camu (Myrciaria dubia) es una fruta de la región amazónica que ha recibido atención debido a su alto contenido de compuestos antioxidantes, como el ácido ascórbico y los polifenoles. El objetivo del estudio fue seleccionar clones de camu-camu según sus características morfológicas mediante análisis multivariados. Se evaluaron 56 clones de camu-camu distribuidos en tres bloques con dos plantas por parcela experimental. Las variables medidas fueron altura de la planta (H), número de ramas basales (NRB), número de brotes terminales (NBT), diámetro basal del tallo (DT), clorofila a (Chl a) y b (Chl b) y clorofila total (Chl a + b). Los análisis de agrupamiento de componentes principales (PCA) y ...