HETEROSIS AND INBREEDING DEPRESSION IN WHEAT [TRITICUM AESTIVUM L. AND T. DURUM DESF.J

Abstract

Twelve genotypes of Triticum aestivum L. and T. durum Desf. Viz. HI 1011, HW 965, Hindi 62, DL 803-3, MP 938, A 206 (d), Raj 1555(d), JWJ 2914, HI 1077, HUW 201, GW 190 and JWJ 866 were crossed to obtain FI's during the year 1993-94. The FI seeds obtained were divided into two halves. One half was stored on cold storage while other half was used to obtain Fz seeds. In the final trial, Pv Pz, FI and Fz of seven crosses, were planted in a randomized block design with four replications during rabi 1995-96. Parents and FI were grown in a single row plots and the Fz's were grown in two rows plots. The plot consisted of 2 metre row length spaced at 20 cm and 10 em between and within row, respectively. Five competitive plants for each row to each replication in all the populations were selected to record observations on nine traits. Heterosis and inbreeding depression for all the traits were estimated as per standard procedures.