Abstract
Abstract The objective of this study was to estimate coefficients of repeatability, to determine the minimum number of fruits necessary for genotype selection and to estimate phenotypic correlation coefficients between morpho-agronomic characters of Theobroma grandiflorum fruits. It was evaluated twenty - two genotypes of an agroforestry system implanted in the municipality of Cantá - RR. Ten fruits per genotype were collected and evaluated for longitudinal length, transverse diameter, total weight, peel thickness, peel weight, pulp weight, placental weight and wet seed weight. Four statistical methods were used to estimate the repeatability coefficients: variance analysis, main components based on the correlation matrix and the covariance matrix, and structural analysis based on the correlation matrix. The number of measurements needed to predict the real value of the genotypes and the Pearson correlation coefficients among the characters were also estimated. The repeatability coefficients ranged from low to moderate, with 10 fruits per plant generally required, with 85% of confidence, in order to make an effective selection for most of the characters studied. There are possibilities of indirect gains for fruits with greater amount of pulp through the selection of larger and / or heavier fruits.
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Claims 3
Claim · model-written summary
Repeatability coefficients of Theobroma grandiflorum fruit characters ranged from low to moderate.
- Taxon
- Theobroma grandiflorum
Theobroma grandiflorumt0 - Outcome
- repeatability coefficientse1
- Value
- low to moderatee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Repeatability of morpho-agronomic characters of Theobroma grandiflorum fruits”
e1“The repeatability coefficients ranged from low to moderate”
Claim · model-written summary
About 10 fruits per plant are generally required for effective selection of most fruit characters.
- Taxon
- Theobroma grandiflorumTheobroma grandiflorumt0
- Outcome
- fruits per plant generally requirede2
- Value
- 10e2
- Qualifier
- with 85% of confidencee2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Repeatability of morpho-agronomic characters of Theobroma grandiflorum fruits”
e2“10 fruits per plant generally required, with 85% of confidence”
Claim · model-written summary
Selection for larger or heavier fruits may give indirect gains for fruits with greater pulp amount.
- Taxon
- Theobroma grandiflorumTheobroma grandiflorumt0
- Treatment
- selection of larger and / or heavier fruitse3
- Outcome
- indirect gains for fruits with greater amount of pulpe3
- Direction
- increaseinferrede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Repeatability of morpho-agronomic characters of Theobroma grandiflorum fruits”
e3“There are possibilities of indirect gains for fruits with greater amount of pulp through the selection of larger and / or heavier fruits”