Heterosis for grain yield in rice (Oryza sativa) under coastal salinity condition

P. B. Vanave
U. B. Apte
S. G. Bhave
B. D. Jadhav
PDF

Abstract

The present experiment was undertaken with line x tester mating design involving 12 testers (male) and 4 lines 
(female) to identify the best heterotic combinations. Pooled analysis of heterotic combinations for grain yield revealed 
range from -20.92% (NAUR 1 x GR 11) to 26.43% (NAUR 1 x CSR 27) for average heterosis, -28.99% (NAUR 1 x 
GR 11) to 19.87% (GAR 13 x NVSR 6108) for heterobeltiosis, and -11.03 (NAUR 1 x GR 11) to 49.91% (NAUR 1 x CSR 
27). Further, based on pooled analysis, best crosses with more than 30% heterosis were NAUR 1 x CSR 27 (49.91%), 
NAUR 1 x Dandi (48.98%), Panvel 1 x NVSR 6108 (35.93%), NAUR 1 x IR 76346-B -B-10-1-1-1 (33.73%), NAUR 1 x 
NVSR 6100 (32.62%), Panvel 1 x Dandi (32.56%) and NAUR 1 x NVSR 6108 (32.33%) over check CST 7-1. 

Keywords Rice, line x tester, heterosis, heterobeltiosis
Published 23/02/26