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Submitted
August 7, 2021
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November 28, 2021
Published
February 11, 2022
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Abstract

A study was conducted to understand genetic divergence in Randomized complete block design accommodating 30 soybean [Glycine max (L.) Merrill] genotypes randomly in three replications. These genotypes were evaluated for twenty-seven traits: five phenological, nine agro-morphological, eight physiological traits (from field-trial) and five physiological traits (from laboratory experiment) recorded and subjected to PCA (Principal Component Analysis) and cluster analysis. Among all the studied cultivars, significant diversity, as well as analysis of dispersion, was recorded for different agro-morphological characters. D2-statistic (Tocher method) framed (generalized distance-based) nine clusters: largest with eight and five were oligo-genotypic. Harvest index>seed yield per plant>germination relative index>seedling dry weight contributed maximum towards total divergence. From the most divergent clusters, 21 crosses involving cluster v genotypes (PS-1347, RKS-18, PS-1092, NRC-142, VLS-94, NRC-136, and Shalimar Soybean-1) with monogenotypic cluster VII (AMS-2014), VIII (RSC-11-15) and III (RSC-10-71) suggested for future hybridization. Out of eighteen, only eight principal components revealed more than 1.00 eigen value and exhibited about 85.03% variability among the traits studied. The highest variability (25.41%) by PC1 followed by PC2 (15.60%), PC3 (12.35%), PC4 (10.13%), PC5 (7.20%), PC6 (5.43%), PC7 (4.80%) and PC8 (4.11%) for characters under study.

Keywords

D2-statistic Randomized complete block design PCA Variability

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Copyright (c) 2022 Environment Conservation Journal

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

Author Biographies

Anil Pandey, Department of Plant Breeding and Genetics, Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur, Bihar, India.

Head of the Department of plant breeding and genetics.

Mainak Barman, Department of Plant Breeding and Genetics, Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur, Bihar, India.

Phd scholar at department of plant breeding and genetics.

Monika Shahani, Department of Plant Breeding and Genetics, Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur, Bihar, India.

PhD scholar at Department of plant breeding and genetics.

Gharsiram, Department of Agronomy, Dr. Rajendra Prasad Central Agricultural University, Pusa, Samastipur, Bihar, India.

PhD scholar at department of Agronomy

How to Cite
Bijarania, S., Pandey, A. ., Barman, M. ., Shahani, M. ., & ram, G. (2022). Assesment of divergence among soybean [Glycine max (L.) Merrill] genotypes based on phenological and physiological traits. Environment Conservation Journal, 23(1&2), 72–82. https://doi.org/10.36953/ECJ.021808-2117
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