Combining frost tolerance, high grain yield and good pasta quality in durum wheat
Combining frost tolerance, high grain yield and good pasta quality in durum wheat
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DOI：
10.1111/pbr.12064
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发表时间：
2013-08-01
期刊：
影响因子：
2
通讯作者：
Reif, Jochen C.
中科院分区：
文献类型：
--
作者：
Longin, Carl Friedrich Horst;Sieber, Alisa-Naomi;Reif, Jochen C.
在中欧冬季种植而不是春季硬粒小麦将大大增加产量潜力，但目前由于缺乏对优质材料的抗冻性了解而受到阻碍。我们调查的目的是（i）研究抗冻性的遗传变异和遗传力及其与硬粒小麦其他重要农艺和质量性状的关联，（ii）研究将抗冻性与高质量和高产量相结合的潜力，以及（iii）研究遗传力和性状之间的关联对冬季硬粒小麦多阶段选择计划优化设计的影响。我们在四个地点的田间试验中调查了 101 个优质冬季硬粒小麦品系和四个商业检查。记录了四个农艺性状和九个质量性状。此外，使用半对照测试评估了耐霜性，从而获得了高质量的表型数据。所有性状的基因型方差 (sigma(2)(G)) 均显着大于零，遗传力为中等到高。一些优良硬粒小麦品系表现出与两种耐霜小麦品种相当的耐霜性。耐霜性与其他重要的农艺和质量性状没有负相关。在半对照试验中评估的抗冻性表型数据的高质量表明，这是在多阶段硬粒小麦育种计划的早期阶段考虑抗冻性的一种经济有效的方法。
Growing in Central Europe winter instead of spring durum wheat would substantially increase yield potential but is currently hampered by the lack of knowledge of frost tolerance present in elite material. The objectives of our survey were to (i) study the genetic variability and heritability of frost tolerance and its association with other important agronomic and quality traits in durum wheat, (ii) examine the potential to combine frost tolerance with high quality and high grain yield and (iii) investigate the consequences of the heritabilities and associations among traits on the optimum design of a multistage selection programme for winter durum wheat. We investigated 101 elite winter durum wheat lines and four commercial checks in field trials at four locations. Four agronomic as well as nine quality traits were recorded. In addition, frost tolerance was evaluated using a semi-controlled test resulting in high-quality phenotypic data. Genotypic variances (sigma(2)(G)) were significantly larger than zero for all traits, and heritabilities were moderate to high. Several elite durum wheat lines exhibited a frost tolerance comparable to that of two frost-tolerant Triticum aestivum varieties. Frost tolerance was not negatively associated with other important agronomic and quality traits. The high quality of the phenotypic data for frost tolerance evaluated in a semi-controlled test suggests that this is a cost-efficient approach to consider frost tolerance at early stages of a multistage durum wheat breeding programme.