Variability and Intra-Specific Classification of Lima Bean (Phaseolus lunatus L.) from Timor Island based on Morphological Characters

Abstract

Lima bean (Phaseolus lunatus L.) is a species of beans which originating from the regions of Central America and Andes Mountains. Lima bean in Timor Island is underutilized although these plant growth there and have many variations. This study aims to determine the diversity of lima beans on Timor Island based on morphological characters. Samples were collected by survey methods from three districts on the island of Timor. Morphological traits related to the vegetative and flowering stages and mature seeds morphology were scored using the International Plant Genetic Resources Institute lima bean descriptors with a soft modification. The similarity index is calculated using the General Similarity Coefficient Gower formula. The dendrogram is generated from cluster analysis using the Unweighted Pair Group Methods using Arithmetic Average (UPGMA) method. Furthermore, Principal Component Analysis (PCA) was used to determine the role of each morphological character used. The dendrogram shows that 23 collected accessions are divided into two main clusters with a 57% similarity index. The two clusters are distinguished based on the presence or absence of secondary colors and secondary patterns in the seed organs. Then, each main cluster is divided into two subclasses based on the character of the pigmentation stem, the length of the terminal leaflets, flower color, and seed type.

Genetic Diversity of Lima Bean (Phaseolus Lunatus L.) From Timor Island Based on Molecular Marker Inter-Simple Sequence Repeats (Issr)

“…The results of this study support previous research (Bria et al 2019), which classifies lima bean from Timor Island into two main clusters based on morphological characters. Although Timor Island is not the center of the diversity of lima bean, the results of this study indicate that lima bean from Timor Island has high genetic diversity.…”

“…Materials used for this study was lima bean accessions collected from the Timor island aged 3-4 weeks old (Table 1). Four plant accessions were taken from 23 plant accessions as a representative sample of the cluster formed from previous research (Bria et al, 2019). The sample determination used in this study was based on the results of genetic variability compared to the cluster morphologically.…”

“…The poisonous type can be consumed if it has been boiled repeatedly and usually during the lean season. Previous research conducted by Bria et al (2019) revealed that there were two main clusters:…”

Analisis Korelasi Karakter Agronomi Kuantitatif Terhadap Penentu Hasil Biji Kacang Kratok (Phaseolus Lunatus)

“…Kacang kratok (Phaseolus lunatus L,) adalah salah satu jenis tanaman leguminosae. Kacang kratok merupakan tanaman legum yang diidentifikasi berasal dari daerah sekitar Amerika Tengah dan Pegunungan Andes dan dikenal dalam bahasa inggris yaitu lima bean (Bria et al, 2019). Hal ini juga selaras dengan pendapat Martínez-Nieto et al (2020) yang menyatakan menurut asal geografis dan karakteristik benihnya, tanaman kacang kratok atau lima bean berasal dari dua daerah besar Mesoamerika dan Andes.…”

Canonical Correlations Between Cycle and Grain Production Traits in Lima Bean1

“…The Lima Bean (Phaseolus lunatus L.), belonging to the Fabacea family, is one of the five domesticated species of the Phaseolus genus and the second most cultivated species within the genus after the common bean (P. vulgaris L.) (PENHA et al, 2016;BITOCCHI et al, 2017). It is grown in tropical and subtropical regions and is distributed in countries such as Mexico, Guatemala, Ecuador, Peru, Colombia, Spain, Nigeria, Indonesia, and Philippines, among others (BRIA; SUHARYANTO; PURNOMO, 2019).…”