Genetic divergence in extra early rice (Oryza sativa L.) under two culture systems

Abstract

The study was conducted with 30 extra-early rice (Oryza sativa L.) genotypes « 100 days duration) collected from various parts of the country. The entries were raised in randomized block design with three replications under each culture systems. For direct-seeding the seeds were dibbled in the puddle soil and for transplanting the seedlings were raised and the seedlings were transplanted on twentieth day in the main field. Three seedlings were maintained in each hill and the spacing followed was 15 x 10 cms. Normal agronomic practices for direct-seeding and transplanting were followed. Observations were recorded for grain yield and its component characters on five randomly selected plants in each replication in each of the experiment and the datas collected were subjected to divergence analysis [1].