Evaluation of yield and yield components of oat genotypes under rainfed and irrigated conditions in Sarpol-e-Zahab

Authors

1 Assoc. Prof., Dept. of Agronomy and Plant Breeding, Campus of Agriculture and Natural Resources, Razi University, Kermanshah, Iran

2 M. Sc. Graduate, Dept. of Agronomy and Plant Breeding, Campus of Agriculture and Natural Resources, Razi University, Kermanshah, Iran

3 Elmi-Karbordi Education Center of Jihad-e-Agriculture, Sarpol-e-Zahab, Kermanshah, Iran

Abstract

Identification of tolerant genotypes to rainfed condition is one of the important breeding objectives in cereals such as oats. Therefore, this research was performed to evaluate 21 oat genotypes under rainfed and irrigated conditions each in a randomized complete block design with three replications in Sarpol-e-Zahab, Kermanshah, during 2011-2012 cropping season. The results of analysis of variance showed significant variation among genotypes for yield, yield components and other studied morphological traits under both conditions. All studied traits except number of grain per spike were reduced under rainfed condition compared to irrigated condition. Factor analysis identified two factors that explained the correlation among the drought tolerance indices. The first factor was named of yield potential and drought resistance and the second factor was called drought tolerance. The compatible and incompatible genotypes to rainfed conditions were separated by cluster analysis. Totally, based on the drought tolerance indices and the other analyses, the genotypes Potoroo, Brusher, Euro and Ufrgs940886-4 were known as the genotypes with higher grain yield in both conditions and Nasta, Arnold, Kaloptt and 13Zop95 were known as the genotypes with lower grain yield and incompatible to rainfed condition.

Keywords

References

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Cereal Research
Volume 5, Issue 4
December 2015
Pages 387-398

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