Heterosis and Inbreeding Depression for Yield and Yield Attributing Traits of Maize (Zea mays L.)
Surendra Kumar
Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, (U.P.), 208002, India.
Lokendra Singh *
Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, (U.P.), 208002, India.
R K Yadav
Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, (U.P.), 208002, India.
Anuj Mishra
Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, (U.P.), 208002, India.
Keshav Babu
Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, (U.P.), 208002, India.
Ravi Dixit
Department of Seed Science & Technology, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, (U.P.), 208002, India.
Chandramani Kuswaha
Department of Genetics and Plant Breeding, Chandra Shekhar Azad University of Agriculture and Technology, Kanpur, (U.P.), 208002, India.
*Author to whom correspondence should be addressed.
Abstract
In present Investigation 45 single cross hybrids were evaluated along with their parental lines and checks heterosis and inbreeding depression. The standard heterosis, the hybrid combinations DI- 123 x DI- 111(91.11), DI- 121 x DI- 117 (80.82), DI- 121 x DI- 111(80.33), DI- 121 x D- 56 (78.33), DI- 123 x DI- 117 (74.10), DI- 122 x D- 52(70.23), DI- 121 x D- 52 (67.04) and DI- 117 x D- 56 (62.24) were identified as best for grain yield per plant (g) and some of the yield contributing traits. Maximum inbreeding depression was obtained from DI- 111 x DI- 118 (61.50) for grain yield per plant (g).
Keywords: Maize, yield, heterosis, inbreeding depression