1 Agronomist, Directorate of Agriculture and Food Production, Government of Odisha, Bhubaneswar, Odisha, India. 2 Scientist (Senior Scale), Seed Technology, Directorate of research on Women in Agriculture, Bhubaneswar, Odisha, India. 3 Department of Plant Breeding & Genetics, College of Agriculture, OUAT, Bhubaneswar, Odisha, India. 4 Department of Seed science & Technology, College of Agriculture, OUAT, Bhubaneswar, Odisha, India.
Twenty-two genotypes of little millet (Panicum sumatrense) were evaluated under 12 environments uring Autumn 2008 to Autumn 2009 at the Central Research Station, OUAT, and Bhubaneswar. Analysis f variance on 14 metric traits revealed highly significant differences due to genotypes, environments and enotype x environment interactions. Early maturing genotypes RCM 4 and KCM 594 were the lowest ielders and displayed lower mean performance for most of the component traits. The highest yielder NAU 98 is a late maturing genotype, having maximum values for plant height, flag leaf length and area, anicle length, panicle exsertion, panicle weight, panicle yield, straw yield, biological yield, and 1000-rain weight resulting in high harvest index. Higher grain yield was also recorded by KCM42, KCM 84, KCM 02D and CO 2 with relatively higher mean performance for all the component characters. Moderate to igh estimates of genotypic coefficient of variation, heritability and genetic advance were observed for rain yield, flag leaf area, panicle exsertion, panicle yield, panicle weight, straw yield and biological yield. rain yield exhibited high positive correlation with all the characters except panicle exsertion and panicle umber. Path analysis pooled over environments revealed that biological yield, harvest index and days to eading had maximum contribution towards grain yield.
Keywords: Little millet, Panicum miliare, Panicum sumatrense, Genetic variability, Character association, Harvest index, Heritability