CORRELATION AND PATH COEFFICIENT ANALYSIS STUDIES IN OAT (AVENA SATIVA L.)
PARBHAT KUMAR, D. S. PHOGAT AND PUMMY KUMARI
Forage Section, Department of Genetics & Plant Breeding
CCS Haryana Agricultural University,
Hisar-125 004 (Haryana), India
(Received : 15 July 2016; Accepted : 28 October 2016)
Fifty genotypes of oat were evaluated to study the character association and path coefficient during rabi 2014-15. The correlation studies revealed positive and significant correlations of seed yield/plant with 100-seed weight, number of spikelets/panicle and number of tillers/plant. Strong association of these traits revealed that the selection based on these traits would ultimately improve seed yield and it was also suggested that hybridization of genotypes possessing combination of above characters was most useful for obtaining desirable high yielding genotypes. Path coefficient analysis revealed that 100-seed weight, number of spikelets/panicle, number of tillers/plant, plant height, flag leaf length, internode length, axis length and days to maturity had positive and direct effects on seed yield/plant, while the characters viz., days to 50 per cent flowering and peduncle length showed direct negative effects. The results revealed that the traits like 100-seed weight, number of spikelets/panicle and number of tillers/plant should be given due consideration while performing selection for seed yield in segregating generations of oat.
Key words: Correlation, Avena sativa, path analysis, seed yield