Center for Plant Breeding and Genetics, Tamil Nadu Agricultural University, Coimbatore-641003
Online published on 26 August, 2014.
The relative heterosis for grain yield varied from -33.59 (IBET IE 1554-5 × UMI 61) to 21.34 (IBET IE 1051-5×UMI 61) percent. The heterobeltiosis for gain yield was between -40.01 (IBET IE 1554-5 × UMI 61) to 13.38 (IBET IE 1256-6 × UMI 61) percent and standard heterosis for grain yield recorded was from -38.53 (IBET IE 1554-5 × UMI 61) to 12.89 (IBET IE 1256-6 × UMI 61) percent. Among the hybrids, IBET IE 1256-6 × UMI 61 and Hy R`06 6143–16 × COH(M) 5 high magnitude standard heterosis for plant height, cob weight, cob length, number of kernels per row, 100 kernel weight, harvest index and single plant yield.
Per se performance, relative heterosis, heterobeltiosis, standard heterosis
