JOURNAL OF AGRICULTURAL SCIENCE AND PRACTICE
Integrity Research Journals
ISSN: 2536-7072
Model: Open Access/Peer Reviewed
DOI: 10.31248/JASP
Start Year: 2016
Email: jasp@integrityresjournals.org
Evaluation and selection of pawpaw accessions for production and breeding programmes in Southeast Nigeria Using Rank Summation Index (RSI) Approach
https://doi.org/10.31248/JASP2024.484 | Article Number: 530C66181 | Vol.9 (6) - December 2024
Received Date: 05 August 2024 | Accepted Date: 10 October 2024 | Published Date: 30 December 2024
Authors: J. O. Adinde* , O. Ugwuanyi-Nnadi , O. J. Uche and U. J. Anieke
Keywords: Growth characteristics, multiple-trait selection, pawpaw, Rank Summation Index (RSI), yield characteristics.
Pawpaw (Carica papaya) is a tropical crop with significant economic, nutritional, and medicinal importance. However, its production in Nigeria is largely casual and subsistence-based, with many farmers relying on naturally growing plants due to a lack of knowledge of suitable cultivars for improved yield. This study was therefore aimed to evaluate the growth and yield characteristics of twelve pawpaw accessions in Nsukka, Southeast Nigeria, to select the most suitable accession using the Rank Summation Index (RSI) approach for improved production, food security and economic development. The accessions were collected from Kogi State and Enugu State, Nigeria, and evaluated using a randomized complete block design with three replications. Data were collected on some important growth and yield characters and analyzed using Analysis of Variance at a 5 per cent significant level. The results showed significant variations (p<0.05) among the accessions in the number of leaves per plant, stem girth, number of harvested fruits per plant, average fruit weight, and fruit yield per plant. The Rank Summation Index (RSI) was used to combine and rank the accessions based on their performance across those traits that showed significant variations. Accession unn10 with the lowest RSI score (12) was identified as the most superior, followed by unn12 with an RSI score of 14 and could therefore be selected for pawpaw production in the study area. The findings provide valuable information for farmers and researchers to improve pawpaw production and breeding programmes in Nigeria.
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