Genetic Diversity Studies Based on Principal Component Analysis For Yield Attributes in Cassava Genotypes

Rao, B. Babu; Swami, D. V.; Ashok, P; Babu, B. Kalyana; Ramajayam, D.; Sasikala, K.

doi:10.20546/ijcmas.2018.712.170

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…Lima karakter yaitu keberadaan lunas, susunan mahkota bunga, posisi kepala putik dibanding kepala sari, tipe benang sari, dan tipe bunga memiliki nilai positif dan berpengaruh pada pengelompokkan aksesi dalam kelompok yang sama. Karakter dengan nilai positif menjelaskan keragaman maksimal dalam PC (Rao et al, 2018). Oleh karena itu, lima karakter tersebut merupakan karakter dengan pengaruh paling besar pada keragaman aksesi.…”

Section: Analisis Dataunclassified

Keragaman Fenotipik Bunga Telang Double Petal Asal Indonesia dan Thailand Berdasarkan Morfologi Bunga

Aziza¹,

Ulimaz²,

Ustari³

et al. 2021

Al-Kauniyah J. Biol.

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AbstrakBunga telang (Clitoria ternatea L.) merupakan tanaman legum yang bagian bunganya telah banyak dimanfaatkan. Double petal adalah salah satu varian spesies bunga telang yang banyak ditemukan di Asia Tenggara. Penelitian ini bertujuan untuk mengevaluasi keragaman fenotipik plasma nutfah bunga telang double petal asal Indonesia (Bali, Jawa Barat, dan Jawa Timur) dan Thailand berdasarkan morfologi bunga. Percobaan disusun dalam Rancangan Acak Kelompok (RAK) dengan tiga ulangan. Data morfologi dianalisis menggunakan analisis multivariat berupa Analisis Komponen Utama (Principal Component Analysis) dan Analisis Klaster (Cluster Analysis) dengan bantuan program NTSYS 2.1. Hasil penelitian menunjukkan terdapat lima komponen utama yang berpengaruh terhadap keragaman aksesi dengan persentase keragaman kumulatif 88,82%. Karakter tipe bunga, susunan mahkota bunga, keberadaan lunas, tipe benang sari, dan posisi kepala putik memberi pengaruh terbesar terhadap keragaman aksesi. Analisis klaster membagi aksesi-aksesi tersebut menjadi dua klaster dengan koefisien ketidakmiripan 3,01–6,83. Dari hasil penelitian dapat disimpulkan bahwa bunga telang double petal asal Indonesia dan Thailand memiliki keragaman yang luas dan kekerabatan yang jauh; aksesi asal Bali memiliki morfologi bunga dan klaster yang berbeda dengan aksesi asal Jawa Barat, Jawa Timur, dan Thailand. Informasi ini akan bermanfaat dalam merencanakan pengelolaan plasma nutfah dan pemuliaan bunga telang double petal. Abstract Butterfly pea (Clitoria ternatea L.) is a legumeplant of which flower parts are widely used. One of butterfly pea variant is double petal which commonly found in Southern Asia. This study aimed to evaluate phenotypic diversity of double petal butterfly pea germplasm from Indonesia (Bali, West Java, and East Java) and Thailand based on flower morphology. The experiment was arranged in randomized complete blocks design with three replications. Morphology data were subjected to multivariate analysis using Principal Component Analysis and Cluster Analysis and performed by NTSYS 2.1. The result showed that there were five significant principal components that cumulatively explained 88.82% of variance. Existence of keel, aestivation type, position of stigma, type of stamen, and flower type gave high contributions to the diversity of accessions. Cluster analysis grouped the accessions into two clusters with dissimilarity coefficient from 3.01–6.83. From the results, it can be concluded that double petal butterfly pea from Indonesia and Thailand have wide diversity and genetic relationship; the accessions from Bali have different flower morphology and cluster compared to the accessions from East Java, West Java, and Thailand. The information will help planning management of the germplasm and breeding double petal butterfly pea.

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Section: Analisis Dataunclassified

Keragaman Fenotipik Bunga Telang Double Petal Asal Indonesia dan Thailand Berdasarkan Morfologi Bunga

Aziza¹,

Ulimaz²,

Ustari³

et al. 2021

Al-Kauniyah J. Biol.

View full text Add to dashboard Cite

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Parameters and genetic divergence to identify resistance to anthracnose and bacteriosis in cassava accessions

Dalarosa

Davide

Gonçalves

et al. 2022

Pesq. agropec. bras.

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The objective of this work was to estimate the genetic parameters of cassava (Manihot esculenta) genotypes cultivated in the field, as well as the genetic divergence between them, in order to identify which ones show a greater resistance to anthracnose and bacteriosis. Three independent experiments were carried out, evaluating 133 accessions and nine commercial cultivars of cassava distributed in five blocks, with five plants per plot in each experiment. In the first experiment, the plants were subjected to inoculation with Xanthomonas phaseoli pv. manihotis (bacteriosis). In the second, the plants were subjected to inoculation with Colletotrichum gloeosporioides f. sp. manihotis (anthracnose). In the third, carried out in an augmented block design and under naturally occurring diseases, visual evaluations of the plants were performed using a rating scale. Heritability was used as a genetic parameter, and the unweighted pair group method with arithmetic mean was applied to determine genetic divergence and clustering. In the third experiment, genetic variability was detected among accessions, which were evaluated for the area under the disease progress curve (AUDPC) for anthracnose and bacteriosis. In the first and third experiments of bacteriosis, the chances of success in the selection of resistant accessions are higher due to the high heritability values obtained. The BGM-1170 and BGM-1134 accessions show the lowest mean for AUDPC and are considered resistant to anthracnose and bacteriosis.

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Heritability and Selection Using GGE Biplots and the Sustainability Index (SI) of Maize Mutants under Different Cropping Systems in Upland

et al. 2023

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A good maize plant breeding program must consider the effect of genotype-by-environment interactions (GEIs) and the correlation of important traits. The purpose of this study was to evaluate genetic variation, identify and investigate the implications of GEIs on breeding maize mutants in order to determine the ideal genotypes (stable and high yield), identify the best intercropping system for maize mutants, and identify the heritability and relationships of the traits tested that are important in cultivation. This research was carried out in five different intercropping systems in Upland West Java, Indonesia. A randomized block design with two replications was used in the field experiment. The measurement results revealed that the genetic diversity of maize mutants is broad, with six axes having eigenvalues ranging from 8.76 to 1.07 and a cumulative value of 76.64%. The neighbor-joining tree also showed a wide range of variation, yielding five distinct groups. The GEIs had a significant effect on the 14 traits tested, particularly yield. The environment had a significant impact on the variation of all the traits tested. The ideal cropping system for selecting the ideal maize mutant was Environment 4 (maize + rice). Superior maize mutants were successfully selected based on the GGE biplot. Thus, the sustainability index (SI) was used to successfully select maize mutants that were superior by 20.00%. These two methods selected only 15.00% of the maize mutants. One trait has a low heritability value, five traits have a moderate heritability value, and 17 traits have a high heritability value. The yields correlated positively and significantly with nine yield traits. Future maize-breeding programs can be based on data on genetic diversity, heritability, and the relationship of the traits tested. The best intercropping system can be used as an alternative for increasing maize cultivation income. Selected maize mutants can be proposed as new superior genotype candidates.

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Genetic Diversity Studies Based on Principal Component Analysis For Yield Attributes in Cassava Genotypes

Cited by 3 publications

References 7 publications

Keragaman Fenotipik Bunga Telang Double Petal Asal Indonesia dan Thailand Berdasarkan Morfologi Bunga

Keragaman Fenotipik Bunga Telang Double Petal Asal Indonesia dan Thailand Berdasarkan Morfologi Bunga

Parameters and genetic divergence to identify resistance to anthracnose and bacteriosis in cassava accessions

Heritability and Selection Using GGE Biplots and the Sustainability Index (SI) of Maize Mutants under Different Cropping Systems in Upland

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