Hybrid Vigor in a Seven‐Parent Diallel Cross in Common Winter Wheat (Triticum aestivum L.)¹

Abstract

Levels of hybrid vigor for earliness, height, three components of yield, and grain yield were examined in the F1 and F2 generations of a diallel cross of seven varieties selected from hard red, soft white, and soft red winter wheats. Entries planted in hills showed little interaction with seeding rates of 3 to 15 plants per 930 cm2 (1 ft2), but the degree of hybrid vigor tended to be greater for hill seeding than for normal seeding.

Exploitation of Heterosis in Pearl Millet [Pennisetum glaucum (L.) R. Br.] for Yield and its Component Traits by Using Male Sterile Line

“…Heterobeltiosis was estimated as per the procedure given by Fonseca and Patterson (1968) using mean values for various characters over replications. Standard heterosis referred as the superiority of F1 over standard hybrid GHB 732 and was estimated as per the formula given by Meredith and Bridge (1972) for various characters over replications.…”

Heterosis Analysis for Seed Yield and Other Component Traits in Indian Mustard [Brassica juncea (L.) Czern and Coss]

“…Days to 50% flowering and days to maturity were recorded on plot basis. The experimental data recorded for various characters were analyzed as per the procedure of Panse and Sukhatme (1978) and heterosis was calculated following the method of Fonseca and Patterson (1968).…”

Exploitation of Heterosis for Yield and its Components in Castor (Ricinus communis L.)

“…Heterobeltiosis was estimated as per the procedure given by Fonseca and Patterson (1968). Standard heterosis referred as the superiority of F1 over standard hybrid AKC1and 48-1 and it was estimated as per the formula given by Meredith and Bridge (1972) for various characters under study.…”