PRINCIPAL COMPONENT AND FACTOR ANALYSIS IN SIX ROWED BARLEY (HORDEUM VULGARE L.) GENOTYPES
YOGENDER KUMAR*, RAM NIWAS, O. P. BISHNOI AND NAVEEN KUMAR
Wheat and Barley Section, Department of Genetics & Plant Breeding
CCS Haryana Agricultural University,
Hisar-125004 (Haryana), India
*(e-mail : yogenderkgulia@gmail.com)
(Received : 28 March 2018; Accepted : 25 June 2018)

SUMMARY

Efforts were made to study the pattern of diversity in 40 genotypes of six rowed barley (Hordeum vulgare L.) using the principal component method of factor analysis. First five principal components had eigen values more than one and have explained altogether 81.37 % of the total variation in 10 metric traits which were mainly associated with plant height, 1000-grain weight and biological yield; days to heading and maturity; harvest index and grain yield; spike length and number of grains per spike; and number of tillers per meter row. The remaining principal components made very little contribution towards total variation and thus could not be considered of much practical value to barley improvement. The genotypes BH 946, BH 15-02, BH 16-40, BH 16-44, BH 10-11, BH 15-06 and BH 15-07 were found to have high yield potential. The results of the present study provide evidence of diversity in barley and thus prove the adequacy of the principal component method in biological investigations.

Key words:Principal component analysis, factor analysis, barley, genotypes, variation

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