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首页> 外文会议>Second International Conference on Sustainable Agriculture for Food, Energy and Industry Vol.2 >Assessment of Salinity Tolerance in Segregation Generations of Wheat Crosses
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Assessment of Salinity Tolerance in Segregation Generations of Wheat Crosses

机译：小麦杂交后代的耐盐性评估

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Three segregation generations were derived from crosses between four intermediate salt tolerant bread wheats, Triticum aestivum L., namely Tobari 66, Lu26.s, Ho2, and Siete Cerros, and screened for more salt tolerant genotypes allowing germination and emergence at 350 mM NaCl (35.05 dS/m). The selection intensity achieved was of the order of 0.29-0.25 in these segregation populations (17-19 seedlings from 7000 seeds). The comparison of salt tolerant hybrid individuals and their parents was carried out in a hydroponic experiment applying six NaCl concentrations, 150, 200,225, 250,275 and 300 mM for hybrid plants, and two concentrations, 150 and 200 mM NaCl for parents. Shoot and root length of two-week-old seedlings were measured to assess tolerance. Both root and shoot lengths of hybrid plants were longer than parents (except Tobari 66) indicating more tolerance to NaCl. It may be assumed that this character is QTL based, and that the parents of such hybrids contain different genes for tolerance.
机译：从四个中等耐盐性面包小麦Triticum aestivum L.（即Tobari 66，Lu26.s，Ho2和Siete Cerros）之间的杂交获得了三代分离，并筛选了更多耐盐性基因型，从而在350 mM NaCl（ 35.05 dS / m）。在这些隔离种群（来自7000粒种子的17-19株幼苗）中，获得的选择强度约为0.29-0.25。在一个水培实验中对耐盐杂种个体及其亲本进行了比较，该试验采用了六种NaCl浓度，分别为150、200,225、250,275和300 mM，用于杂种植物，两种浓度分别为150和200 mM NaCl，用于亲本。测量两周龄幼苗的苗和根长以评估耐受性。杂种植物的根和茎长均比亲本更长（Tobari 66除外），表明对NaCl的耐受性更高。可以假定该特征是基于QTL的，并且此类杂种的亲本包含不同的耐受性基因。

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