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GrainGenes Reference Report: CRS-36-223

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Reference	CRS-36-223
Title	Evaluation of lines derived from wild emmer chromosome substitutions. I. Quality traits
Journal	Crop Science
Year	1996
Volume	36
Pages	223-227
Author	Steiger D Elias E Cantrell R
Abstract	Grain protein quality (gluten strength) and quantity affect the quality of pasta extruded from durum wheat (Triticum turgidum L var durum) semolina Previously, an accession of wild emmer (Triticum turgidum L var dicoccoides) with high protein concentration was used to develop a complete set of 'Langdon' (T dicoccoides) [LDN(DIC)] substitution lines. This study was conducted to evaluate the potential of using these LDN(DIC) substitution lines as parents for deriving lines with increased grain protein concentration and acceptable gluten strength. Each of the 14 substitution lines and Langdon parent were crossed to a common male parent, 'Vic'. Parents and F2:4 and F2:5 lines were grown in replicated trials at two locations in North Dakota in 1989 and 1991. Grain protein concentration and sodium dodecyl sulfate (SDS) sedimentation volume were measured. Population means and genetic variances were compared with those of the Langdon/Vic population to identify substitution lines that conferred improved quality characteristics, and to determine their potential use in a breeding program. Heritabilities were estimated from standard-unit parent-offspring regression and from variance components. LDN(DIC) chromosome substitution populations 1A, 6A, 5B, and 6B were significantly higher than the Langdon/Vic population in grain protein concentration. One population, LDN(DIC) 1B, was significantly higher in sedimentation volume than the Langdon/Vic population. The results indicated that selected LDN(DIC) substitution lines, especially LDN(DIC) 5B and 6B, when crossed to a strong gluten parent, may be useful in deriving lines with increased protein quantity and quality.
Keyword	chromosome-substitution [ Show all 12 ]

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