Evaluation of the Relationship between Yield and Yield Components of Garden Pea (Pisum sativum L. var. hortense) by Correlation and Path Analysis
Harishankar Meena
Department of Horticulture, School of Agricultural Sciences and Technology, Babasaheb Bhimrao Ambedkar University, (A Central University), Lucknow, (UP) - 226025, India.
Rubee Lata *
Department of Horticulture, School of Agricultural Sciences and Technology, Babasaheb Bhimrao Ambedkar University, (A Central University), Lucknow, (UP) - 226025, India.
Hareesh Kumar Maurya
Department of Horticulture, School of Agricultural Sciences and Technology, Babasaheb Bhimrao Ambedkar University, (A Central University), Lucknow, (UP) - 226025, India.
G.C. Yadav
Department of Horticulture, School of Agricultural Sciences and Technology, Babasaheb Bhimrao Ambedkar University, (A Central University), Lucknow, (UP) - 226025, India.
Juhi Aswani
Department of Horticulture, Rajasthan Agricultural Research Institute (SKNAU, Jobner) Durgapura, Jaipur (Raj) - 302018, India.
Krishna Jat
Department of Horticulture, Rajasthan Agricultural Research Institute (SKNAU, Jobner) Durgapura, Jaipur (Raj) - 302018, India.
*Author to whom correspondence should be addressed.
Abstract
The garden pea (Pisum sativum L. var. hortense) is an annual herbaceous plant, with angular or roundish hollow stems covered with a waxy bloom, having growth habits ranging from bushy to climbing type. The study aims to assess the relationship between yield and yield components in garden pea using correlation and path analysis, with the ultimate goal of identifying key traits to develop new varieties with enhanced yield potential. The study was carried out during rabi season of the year 2023-2024 at Horticulture Research Farm No.1, Department of Horticulture, School of Agricultural Sciences and Technology, Babasaheb Bhimrao Ambedkar University, Lucknow, India. The trial was conducted in a Randomized Block Design plot with a size of 1.70 m x 1.20 m. Genetic material used in the research consists of 25 selected germplasm of pea. Five plants randomly selected and tagged before flowering from each plant to evaluate on different characters were considered. The data on seeds yield per plant showed that positive and highly significant correlation with green pod yield per plant followed by number of pods per plant, days to 50% flowering, days to first pod harvest and number of pods per cluster showed highly significant whereas seeds yield per plant showed highly and negative correlation with seed diameter followed by 100 green seed weight, pod length and weight per pod. The direct and indirect effect at both genotypic and phenotypic level elucidated that positive direct effect on seed yield per plant was exerted by reducing sugars percent followed by number of pods per plant, green pod yield per plant while negative direct effect on seed yield was exerted by total sugars percent followed by pod length, number of primary branches per plant. Regarding positive indirect effect on seed yield per plant were exhibited by days to 50 % flowering followed by node to first flower appearance, number of pods per cluster whereas the negative indirect effects on seed yield per plant were exhibited by number of pods per cluster followed by shelling percentage, node to first flower appearance.
Keywords: Pea, genotype, phenotype, direct and indirect effects, correlation coefficient