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作者	单位
秦丽燕，赵琰，杨伟，段晓亮，贾晨亮，梁荣奇，刘广田	(中国农业大学农学与生物技术学院植物遗传育种系，农业生物技术国家重点实验室，北京市作物遗传改良重点实验室，农业部作物基因组与遗传改良重点实验室，北京 100193)

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中文摘要:

为了调查普通小麦品种（系）以及杂交组合后代株系籽粒无机磷含量的分布情况，为低植酸小麦种质资源筛选、亲本选配和后代选择提供参考，利用钼蓝显色法测定了338个普通小麦品种（系）、232个近缘种杂交后代株系，以及4个普通小麦杂交组合的第四代（或第五代）株系的籽粒无机磷含量。结果表明，338个普通小麦品种（系）、232个近缘种杂交后代株系（共570份材料）的籽粒无机磷含量主要分布在0.46 ～0.93 μg·mg^-1之间，低无机磷（低于0.15 μg·mg^-1）和高无机磷（高于0.93 μg·mg^-1）的材料都比较少，分别只占材料总数的3.16%和1.23%。4个杂交组合群体无机磷含量的平均值分别为0.65、0.59、0.45和0.58 μg·mg^-1，与其亲本材料一样，没有高无机磷或者低无机磷含量的株系。这表明从中等无机磷含量的亲本杂交后代中难以筛选到高无机磷（低植酸）的株系。

英文摘要:

In order to explore the distribution characteristics of the inorganic phosphorus, the grain whole mills of 338 common wheat cultivars/lines, 232 breeding lines from the crosses of common wheat ×related species, and 4 populations were determined colorimetrically. The results showed that, in common wheat cultivars/lines and the breeding lines from crosses of common wheat ×related species, the inorganic P content mainly ranged from 0.46 μg·mg^-1 to 0.93 μg·mg^-1, while few materials with low inorganic P content (less than 0.15 μg·mg^-1) or high inorganic P content (more than 0.93 μg·mg^-1) were found in cultivars/lines, but a few lines with high inorganic P (low phytic acid) could be screened out in the breeding lines. The mean values of inorganic P content in four populations were 0.65,0.59,0.45 and 0.58 μg·mg^-1, respectively, but no lines with low inorganic P content or high inorganic P content were picked out, which maybe resulted from the parents' inorganic P contents. Therefore, the materials with low inorganic P content or high inorganic P content could be checked out in common wheat cultivars and other germplasm, and the parents with high inorganic P content should be used in the breeding programs for low phytic acid contents.

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