Original Research Article
Year: 2020 | Month: January | Volume: 7 | Issue: 1 | Pages: 306-311
Performance of Early Maturing Rice Genotypes under Rain Fed Upland Production System in Ethiopia
Abebaw Dessie1, Taddesse Lakew1, Zeynu Tahir2
1Fogera National rice research and Training Center/Ethiopian Institute of Agricultural Research Center, Ethiopia
2Gondar Agricultural Research Center/ Amhara Regional Agricultural Research Center, Ethiopia
Corresponding Author: Abebaw Dessie
ABSTRACT
The experiment was conducted in Woreta, Metema, Pawe, Chewaka and Shire-Maitsebri from 2012-2014 main cropping seasons with the major objectives of early maturing, high yielding and pest resistance rice varieties for the upland rice production system in Ethiopia. A total of 20upland genotypes including one check were used in the study. The trial was laid out in randomized complete block design with three replications with plot size of 6.0 m2. The combined analysis of variance revealed significant difference on grain yield, days to maturity, filled grain per panicle and plant height (P≤0.001). Three genotypes (G16, G13 and G19) showed significant difference than the standard check on grain yield and gave grain yield advantage of 43.3 %, 42.3 % and 42.1 %, respectively. The genotype main effect plus genotype x environment interaction (GE) biplots were used to analyse and visualize pattern of the interaction component. The first two principal components (PC1 and PC2) of the GGE explained 55.02 % with PC1= 38.31 % and PC2=16.71 % of GGE sum of squares, respectively. Genotypes, G16 (ARCCU15 Bar-7-16-30-2-B-B) combined both high stability performance and high mean grain yield across the test environments and characterized as an ideal genotype to the tested locations. Following evaluation of candidate genotypes (G16, G13) and collecting farmer’s feedback, the National Variety Release Committee also recommended G16 as variety for cultivation in Fogera and other areas of similar cultivation conditions and this variety is under demonstration and popularization.
Keywords: Stability, GGE bi-plot, early maturing, upland rice
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