“…Selecting for component traits of grain yield to increase productivity of cereals was suggested by TAKEDA & FREY (1976). EAGLES & FREY (1974) and SAAD EL DIN (1979) showed that an index that included two or more traits was more efticient in selecting for grain yield of oats (Avencl sativa L.) than was selection for grain yield itself. HELSEL (1980) used the general concept that Grain yield = Growth rate x Growth duration x Harvest index in several direct and indirect selection schemes l Journal Paper No.…”