Budi Waluyo
Department of Agronomy, Faculty of Agriculture, Universitas Brawijaya. Jl. Veteran, Malang 65145, East Java, Indonesia

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Short Communication: Preliminary characterization of groundcherry (Physalis angulata) from East Java Province, Indonesia based on morpho-agronomic traits halimatus sadiyah; Andy Soegianto; Budi Waluyo; Sumeru Ashari
Biodiversitas Journal of Biological Diversity Vol. 21 No. 2 (2020)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d210244

Abstract

Abstract. Sadiyah H, Soegianto A, Waluyo B, Ashari S. 2020. Short Communication: Preliminary characterization of groundcherry (Physalis angulata) from East Java Province, Indonesia based on morpho-agronomic traits. Biodiversitas 21: 759-769. Accurate knowledge of the genetic relationships between different germplasms is important for successful crop improvement programs through breeding. This work aimed to i) characterize the groundcherry germplasm collected from the field of eastern Java and Madura Island based on their morpho-agronomic performance, ii) investigate the relationships among the different germplasms, and iii) verify whether simultaneous analysis of quantitative-qualitative data (joint analysis) can reveal new clustering patterns. A total of 26 quantitative and 31 qualitative traits were measured and evaluated for 28 accessions. Principal Component Analysis (PCA) was used to select variables that had significant loading, based on a t-test, for inclusion in cluster analysis. The first clustering method was the Unweighted Pair Group Method with Arithmetic Mean (UPGMA), which only involved quantitative variables using the Manhattan distance. This method was followed by a joint analysis using Gower dissimilarity. Nonparametric multivariate analysis of variance test showed that four clusters were the optimum number for both methods, but the clusters for each method had different members. The coefficient of variation ranged from 3.9 (fruit pH) to 45.5 (productivity per plant), indicating that improvement in the productivity in groundcherry was promising. The mean values of the morpho-agronomic traits for accessions from eastern Java and Madura Island were not significantly different, except for fruit firmness and the mean length of two internodes. In general, geographic isolation did not have much influence on the characteristics of an accession, since there were accessions from these two regions that were members of the same group, identified by the clustering analysis.
Variation in morphological traits of a selection of Indonesian winged bean accessions (Psophocarpus tetragonolobus) and its analysis to assess genetic diversity among accessions Izmi Yulianah; Budi Waluyo; Sumeru Ashari; Kuswanto
Biodiversitas Journal of Biological Diversity Vol. 21 No. 7 (2020)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d210716

Abstract

Abstract. Yulianah I, Waluyo B, Ashari S, Kuswanto. 2020. Variation in morphological traits of a selection of Indonesian winged bean accessions (Psophocarpus tetragonolobus) and its analysis to assess genetic diversity among accessions. Biodiversitas 21: 2991-3000. In Indonesia, winged bean (Psophocarpus tetragonolobus (L.) DC.) is a traditional vegetable crop grown mainly for its edible green pods. Plant breeding programs aim to produce cultivars with high production and good nutritional qualities. The objective of this present study was to assess genetic diversity among 21 selected Indonesian winged bean lines based on observation of morphological characters. This was the first step in determining an appropriate breeding program for the development of improved vegetable cultivars. Twelve qualitative characters and eight quantitative variables were assessed for each of the 21 lines. Categorical differences among lines were observed in characters such as leaflet, pod and seed shape, pod surface texture, anthocyanin pigmentation of stem, flowers and pods. Several of these characters are useful as genetic markers, and cluster analysis of the 21 lines on the basis of qualitative characters enabled two distinct groupings to be identified. Quantitative variation across line means was also high for several of the quantitative variables (a coefficient of variation > 25% for pod length, number of pods per plant, and total pod weight per plant). Principal component analysis applied to the eight variables accounted for 86% of the total variation in just three components with eigenvalues > 1. On Component 1, the characters number of days to first open flower, pod length and pod weight were closely aligned with total weight of pods per plant. Number of pods per plant was not closely aligned with weight of pods per plant. This study has enabled broad differences between groups of lines to be categorized and has identified particular lines with characteristics that recommend them for inclusion as parents in inheritance studies designed to elucidate the contribution that individual characters make to overall productivity, attractiveness, and nutrition of this useful, high protein, vegetable species.
Assessment of combining ability in purple corn parents under line × tester mating design using GGE biplot Nurul Mufidah; Arifin Noor Sugiharto; Budi Waluyo
Biodiversitas Journal of Biological Diversity Vol. 22 No. 10 (2021)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d221048

Abstract

Abstract. Mufidah N, Sugiharto AN, Waluyo B. 2021. Assessment of combining ability in purple corn parents under line × tester mating design using GGE biplot. Biodiversitas 22: 4545-4554. One strategy to increase corn quality is the development of new corn cultivars by incorporating the character of nutritional content. The study aims to obtain information on the combining ability of purple corn lines as well as determine the best parental lines for purple corn hybrid development using the GGE biplot approach. This study used 24 hybrids generated from crossings of 8 purple corn lines with 3 testers, which were crossed using a line × tester mating design. Plant performance was assessed using a randomized block design of three replications. The F-test was used to assess and test the experiment variance. The combining ability of purple corn lines was examined using the GGE biplot method. The result showed that the GGE biplot approach successfully identified the best combiner and combinations generated between purple corn lines and non-purple corn lines. Purple corn lines P1Y1 had the best general combining ability for fresh ear yield and total anthocyanin content, meanwhile, P1Y2 had the best general combining ability in most of the agronomic traits, namely ear diameter, shelled ear weight, number of grains row-1, and as well as total anthocyanin content. These 2 lines were also identified as the best parent chosen in the best combination in this study.
Evaluating fruit morphological and physicochemical characteristics in different banana (Musa spp.) cultivars using multivariate analysis HALIMATUS SA’DIYAH; BUDI WALUYO; RIZA YULI RUSDIANA; VEGA KARTIKA SARI; ALFIAN FUTUHUL HADI
Biodiversitas Journal of Biological Diversity Vol. 27 No. 4 (2026)
Publisher : Society for Indonesian Biodiversity

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.13057/biodiv/d270435

Abstract

Abstract. Sa’diyah H, Waluyo B, Rusdiana RY, Sari VK, Hadi AF. 2026. Evaluating fruit morphological and physicochemical characteristics in different banana (Musa spp.) cultivars using multivariate analysis. Biodiversitas 27 (4): d270435. https://doi.org/10.13057/biodiv/d270435. Banana (Musa spp.) are an important tropical fruit in Indonesia, widely cultivated and contributing significantly to local food production. Indonesia hosts numerous banana cultivars with diverse morphological and physicochemical characteristics; however, comprehensive trait-based evaluations of local cultivars, particularly those integrating multiple traits within a single analytical framework, remain limited. This study aimed to assess the morphological and physicochemical characteristics of 20 banana cultivars collected from traditional markets in East Java and to explore their variability using a multivariate statistical approach. Sixteen quantitative traits, including fruit biometric attributes and nutrient composition, were measured at a standardized ripening stage to enable meaningful cultivar comparisons at market-ready maturity. Cluster analysis using Euclidean distance with complete linkage and Principal Component Analysis (PCA) was applied to examine trait distributions and similarities among cultivars. The results showed clear phenotypic and nutritional variation among cultivars. Several cultivars were separated from others, each exhibiting a distinct profile. These cultivars had high levels of several quality-related traits, including high Fruit Firmness (FF), Total Soluble Solids (TSS), and nutrient content, indicating potential value for improving fruit quality. Meanwhile, several cultivars formed clusters characterized by more moderate trait values. Berlin was identified as an outlier with a distinctive profile, specifically in its moisture, ash, and carbohydrate content. The clustering patterns observed in the PCA biplot were consistent with the cluster heatmap, supporting the use of the methods for integrated characterization. Overall, this study demonstrates that combining morphological and physicochemical traits can uncover complex patterns of variability that may not be apparent through univariate assessment. These findings provide useful information for cultivar differentiation, utilization, and the conservation of local banana germplasm, while also highlighting the need for future studies integrating molecular approaches to better disentangle genetic and environmental influences on key quality traits and to support precision breeding for improved nutrition and stress adaptation.