Phenotypic Diversity of Finger Millet (Eleusine coracana (L.) Gaertn.) Genotypes for Grain Yield Characters
D. Madhusri *
Department of Genetics and Plant Breeding, Naini Agriculture Institute, Sam Higginbottom University of Agriculture, Technology and Sciences, Prayagraj, U.P, India.
G. Roopa Lavanya
Department of Genetics and Plant Breeding, Naini Agriculture Institute, SHUATS, Prayagraj, U.P, India.
M. Elangovan
ICAR- Indian Institute of Millet Research, Rajendranagar, Hyderabad, Telangana, India.
*Author to whom correspondence should be addressed.
Abstract
Analysis of variance showed high significant differences among 40 finger millet genotypes for all the characters under study. High GCV and PCV was recorded for number of tillers per plant, biological yield and peduncle length respectively suggesting that there was predominance of additive gene action. Number of tillers per plant, biological yield, peduncle length, harvest index, grain yield per plant, finger length, ear head length, Number of fingers, days to 50 % flowering exhibited high estimates of heritability with high genetic advance, indicating that these characters are predominantly governed by additive gene action and selection on the basis of these characters would be more effective. Based on the relative magnitude of D2 value, the genotypes were grouped into 4 clusters. The maximum inter cluster distance was observed between clusters II and IV (25.95) followed by cluster II and III (12.16) and crosses involving genotypes from these clusters can be selected to yield superior segregants and future genetic improvement. Peduncle length, biological yield, days to 50% flowering and grain yield per plant appeared to be the most important trait contributing 79.11% towards genetic divergence.
Keywords: Variability, genetic advance, heritability, genetic divergence, finger millet