All the five testers used in this study acted as complete restorer for WA source and
maintainer for O. perennis. The hybrids IR 58025 A x IR 54742 and IR 58025 A x IR 29723
showed greater heterotic expression for all the economic traits studied. The mean
outcrossing percentage was high in V 20 A and IR 58025 A among the cytosteriles. High
outcrossing rate was observed in IR 58025 A when interplanted with IR 29723. The crosses
IR 58025 A x IR 29723 and V 20 A x IR 24 can be used in hybrid rice programme since it
displayed higher heterosis with high outcrossing rate.
Keywords: Restoration, hybrid vigour, outcrossing potential, rice.
Article DOI: NA
Print ISSN: 0019-5200
Online ISSN: 0975-6906
J. RAMALINGAM,· N. NADARAJAN, C. VANNIARAJAN AND P. RANGASAMY info_circle