Volume 63, Issue 2 (30.06.2017)

Volume : 63
Issue : 2 (30.06.2017)
   
Authors : Keyvan FOTOUHI, Eslam MAJIDI HERAVAN, Abazar RAJABI, Reza AZIZINEJAD
Title : Screening sugar beet genotypes in drought stress condition using tolerance indices
Abstract : Drought is one of the major problems affecting crops production, including sugar beet. In order to identify drought tolerant sugar beet genotypes, an experiment with forty three sugar beet genotypes was conducted during 2016 in West Azerbaijan Province of Iran, using a complete randomized block design with three replications, under normal and water-stressed states. Analysis of variance revealed variability among studied genotypes in response to moisture conditions. Genotypes "HSF-861" and "HSF-844" produced the highest root yield and genotypes "F-205051" and "HSF-883" produced the highest white sugar yield under well-watered and water-stressed states, respectively. Assessing genotypes according to some selection indices lead to introduce promising genotypes (Group A) for root yield ("HSF-844", "HSF-859", "HSF-861", "HSF-883" and "32434-91") and white sugar yield ("HSF-841", "HSF-844", "HSF-847", "HSF-861"). In this study, genotype "HSF-844" possessed acceptable root and white sugar yield in both states simultaneously. Classification of studied genotypes using calculated tolerance indices, located them into three (root yield data) and five (white sugar yield data) groups. These differentiate groups relies on the existence of genetic variability in studied sugar beet germplasm. Hence, sugar beet breeders could effectively use selected parental lines from this germplasm for further research works like genetic analysis of drought tolerance and hybrid breeding programs.
For citation : Fotouhi K., Heravan M. E., Rajabi A., Azizinejad R., (2017) Screening sugar beet genotypes in drought stress condition using tolerance indices, Agriculture and Forestry, 63 (2): 105-119. DOI: 10.17707/AgricultForest.63.2.09
Keywords : Drought tolerance, genetic variability, sugar beet
   
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