The identification of new genotypes tolerant to the boron toxicity is very important for the breeding programs carried out in the arid and semiarid regions of West Asia and North Africa region. This study aims to determine the genotypes tolerant to the boron toxicity in 141 F₆ recombinant inbred lines (RILs) of durum wheat. 141 RILs were characterized in terms of their tolerance to boron toxicity using the parameters: 1–5 scale of symptom score, dry matter yield, biomass reduction, tissue boron concentration. The component of variance varied from 0.69 to 0.95. 22 RILs tolerant for 1–5 scale, 121 RILs ranged from moderately tolerant to tolerant for the biomass reduction, 22 RILs moderately tolerant for the tissue concentration, and 75 RILs varied from moderately tolerant to the most tolerant for the boron content. The B toxicity evaluation parameters used in this study are efficient when they are used all together, and they produced fast and reliable results. However, the principal component analyses displayed that BC, DMY (%) and BR parameters were the most effective and reliable for the evaluation of B toxicity tolerance. The RILs represented a wide range of the genetic variation in response to the B toxicity treatments. The boron toxicity tolerance could be improved by the breeding studies.

耐受硼毒性的新基因型的鉴定对于在西亚和北非干旱和半干旱地区进行的育种计划非常重要。本研究旨在确定耐141 F ₆硼毒性的基因型。硬质小麦的重组自交系（RIL）。使用以下参数对141个RIL的硼毒性耐受性进行了表征：1-5症状评分量表，干物质产量，生物量减少，组织硼浓度。方差分量从0.69到0.95不等。1-5个等级的22个RIL的耐受性，中度耐受的生物量减少的耐受性的121个RIL，组织浓度的中等耐受性的22个RIL的耐受性，硼含量的中等耐受性到最宽容的75个RIL的耐受性。本研究中使用的B毒性评估参数在一起使用时是有效的，并且产生了快速而可靠的结果。但是，主成分分析显示BC，DMY（％）和BR参数是评估B毒性耐受性的最有效和最可靠的方法。RIL代表了对B毒性治疗的广泛遗传变异。通过育种研究可以提高对硼的毒性耐受性。