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Genotypic character relationship and phenotypic path coefficient analysis in chili pepper genotypes grown under tropical condition
Author(s) -
Usman Magaji G,
Rafii Mohd Y,
Martini Mohammad Y,
Oladosu Yusuff,
Kashiani Pedram
Publication year - 2016
Publication title -
journal of the science of food and agriculture
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.782
H-Index - 142
eISSN - 1097-0010
pISSN - 0022-5142
DOI - 10.1002/jsfa.7843
Subject(s) - path coefficient , chili pepper , biology , pepper , yield (engineering) , path analysis (statistics) , horticulture , randomized block design , genotype , crop yield , veterinary medicine , agronomy , botany , mathematics , statistics , medicine , biochemistry , materials science , gene , metallurgy
BACKGROUND Studies on genotypic and phenotypic correlations among characters of crop plants are useful in planning, evaluating and setting selection criteria for the desired characters in a breeding program. The present study aimed to estimate the phenotypic correlation coefficients among yield and yield attributed characters and to work out the direct and indirect effects of yield‐related characters on yield per plant using path coefficient analysis. Twenty‐six genotypes of chili pepper were laid out in a randomized complete block design with three replications. RESULTS Yield per plant showed positive and highly significant ( P ≤ 0.01) correlations with most of the characters studied at both the phenotypic and genotypic levels. By contrast, disease incidence and days to flowering showed a significant negative association with yield. Fruit weight and number of fruits exerted positive direct effect on yield and also had a positive and significant ( P ≤ 0.01) correlation with yield per plant. However, fruit length showed a low negative direct effect with a strong and positive indirect effect through fruit weight on yield and had a positive and significant association with yield. CONCLUSION Longer fruits, heavy fruits and a high number of fruits are variables that are related to higher yields of chili pepper under tropical conditions and hence could be used as a reliable indicator in indirect selection for yield. © 2016 Society of Chemical Industry