Clustering and Principal Component Analysis of Nerica Mutant Rice Lines Growing Under Rainfed Condition

Aleya Ferdausi,Lutful Hassan,Md Monjurul Huda,Md Nuruzzaman,Md Shohel Rana,Shamsun Nahar Begum

doi:10.3126/ijasbt.v7i3.25703

Abstract

A field experiment was conducted at subtropical region in Bangladesh to assess the contribution of morphological traits to variability in some NERICA mutant rice lines. The experiment was conducted following RCBD with three replications. Thirty-one NERICA rice genotypes (twenty-eight mutant lines along with three parents) of advanced generations were used. Data were collected on twelve morphological traits. The results of the principal component analysis showed that the first four components account for 80% of total variation giving a clear idea of the structure underlying the variables analyzed. This result was also supported by scree test. Cluster analysis using Ward's method classified the thirty-one genotypes into five distinct groups. The maximum inter-cluster distance was observed between clusters indicating the possibility of high heterosis if individuals from these clusters are cross-bred. The results of PCA were closely in line with those of the cluster analysis. These results can now be used by breeders to develop drought tolerant high yielding rice varieties and new breeding protocols for rice improvement. Int. J. Appl. Sci. Biotechnol. Vol 7(3): 327-334

Highlights

NERICA is a new drought tolerant rice variety introduced by the ministry of agriculture for growing in drought prone areas of Bangladesh
NERICA is the product of interspecific hybridization between the cultivated rice species of Africa (O. glaberrima) and Asia (Oryza sativa)
Cluster Analysis Depending upon the range of diversity, 31 genotypes were grouped into five clusters (Table 2, Fig. 1)

Summary

Introduction

NERICA is a new drought tolerant rice variety introduced by the ministry of agriculture for growing in drought prone areas of Bangladesh. The term NERICA stands for New Rice for Africa, an extended family of some 3000 siblings. NERICA is the product of interspecific hybridization between the cultivated rice species of Africa (O. glaberrima) and Asia (Oryza sativa). NERICA varieties have high yield potential and short growth cycle. Vol 7(3): xxx-xxx them possess early vigor during the vegetative growth phase and this is a potentially useful trait for weed competitiveness. They have higher protein content and amino acid balance than most of the imported rice varieties (WARDA, 2008)

Methods

Results

Conclusion