Inheritance of tolerance to zinc deficiency in barley |
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Authors: | Y Genc K W Shepherd G K Mcdonald R D Graham J Leon |
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Institution: | Cooperative Research Centre for Molecular Plant Breeding, Waite Campus, University of Adelaide, Glen Osmond, SA 5064, Australia. E-mail:;School of Agriculture and Wine, University of Adelaide, PMB 1, Glen Osmond, SA 5064, Australia |
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Abstract: | Barley (Hordeum vulgare L.) is often grown on alkaline zinc (Zn)‐deficient soils where reductions in yield and grain quality are frequently reported. Currently, the use of Zn‐based fertilizer along with Zn‐deficiency‐tolerant genotypes is considered the most thorough approach for cropping the Zn‐deficient soils; however, developing or breeding genotypes with higher Zn efficiency requires a good understanding of the inheritance of tolerance to Zn deficiency. This study was conducted to determine genetic control of this trait in barley. Two parental cultivars ('Skiff, moderately tolerant; and ‘Forrest’, sensitive), 185 F2 plants, and 48 F2‐derived F3 families from this cross were screened to determine inheritance of tolerance to Zn deficiency using a visual score of deficiency symptoms. The segregation ratios observed indicated that greater tolerance to Zn deficiency in ‘Skiff compared with ‘Forrest’ at the seedling stage is controlled by a single gene with no dominance. The results also indicate that visual scores are useful for genetic analysis of tolerance to Zn deficiency. |
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Keywords: | Hordeum vulgare inheritance tolerance zinc deficiency |
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