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GrainGenes Reference Report: CCM-98-1193

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Reference	CCM-98-1193
Title	Identification and genetic characterization of extra soft kernel texture in soft kernel durum wheat (Triticum turgidum ssp. durum)
Journal	Cereal Chemistry
Year	2021
Volume	98
Pages	1193-1202
Author	Ibba MI Kumar N Morris CF
Abstract	Background and objectives. Kernel texture (grain hardness) is a key determinant of wheat quality and utilization. Among soft wheats, softer kernels possess some advantages in processing and end-product quality. Here, an extra soft kernel phenotype was identified and characterized in soft kernel durum wheat. Findings. A RIL population was developed by crossing 'Soft Strongfield' with Kamut Khorasan wheat. Progeny kernels were selected for chalky appearance in the F2, F3, and F4. Kernel texture phenotypes measured by the SKCS in the F5, F6, and F7 were all less than 20 and ranged down to -12.6. Among F5:7 full-sib RILs, there was indication of a single segregating genetic locus that was associated with a difference of about 7 SKCS hardness index (HI) units. Single marker-trait association and composite interval mapping both identified significant QTLs on chromosomes 4B and 1B with phenotypic effects of about 5 and 4 HI, respectively. Conclusions. QTL detected in the present study may be used to reduce kernel texture in soft durum to below zero, creating 'extra soft' durum. These QTLs should also be available to be used in hard kernel durum to reduce kernel texture and may be transferrable to hexaploid wheat. Significance and novelty. The creation of soft kernel durum wheat expanded the processing, end-product quality, and utilization of durum wheat. A further reduction in kernel softness may expand further durum wheat's importance as a global food.
External Databases	https://doi.org/10.1002/cche.10471

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