COMPARISON OF RANDOMIZED COMPLETE BLOCK DESIGN AND VARIANCE BALANCED DESIGN FOR DIALLEL CROSSES
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Date
2021
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Department of Agricultural Statistics B. A. College of Agriculture Anand Agricultural University Anand
Abstract
The present investigation was carried out with an aim to work out combining
ability analysis of diallel crosses for randomized complete block design (RCBD) and
variance balanced design (VBD), compare efficiency of all RCBDs with VBD and
study deviations of general combining ability and specific combining ability effects for
different environmental designs. Six brinjal parents viz., GOB 1, JBGR 1, KS 331, AB
15-06, AB 17-17 and AB 17-28 were crossed in diallel method IV fashion to form
fifteen crosses. The crossing was carried out at the Main Vegetable Research Station
during Late Kharif, 2019 and evaluation of crosses was carried out at the Agronomy
Farm during Late Kharif, 2020. The fifteen crosses were transplanted in two
environmental designs i.e., RCBD and VBD. Four cases were considered for RCBD
based on number of replications included in the analysis. These are RCBD I with three
replications, RCBD II, III and IV are with replications 1st and 2nd, 2nd and 3rd and 1st
and 3rd, respectively. Observations for three traits viz., number of fruits per plant, fruit
yield per plant (kg) and average fruit weight (g) were recorded.