| 摘要: |
| 为了解小麦品种(系)籽粒植酸和无机磷含量的变异及其与千粒重、容重的相关性，进而为小麦营养品质分析、小麦种质资源筛选和品质育种提供参考，本研究利用三氯化铁比色法和钼蓝比色法分别测定92份小麦品种(系)全麦粉的植酸和无机磷含量，并考察了其与千粒重和容重的相关性。结果表明：1)籽粒无机磷含量为0.42~1.60 μg/mg，平均值为0.84 μg/mg，变异系数是0.24，变异范围较大；2)籽粒植酸含量为17.54~28.71 μg/mg，平均值为23.27 μg/mg，变异系数是0.09，变异范围较小；3)小麦籽粒植酸含量与其容重显著负相关(相关系数r为-0.209 2)，与其千粒重的相关系数较小、没有达到显著水平；小麦籽粒的无机磷含量与其容重显著负相关(r=-0.231 5)，与其千粒重显著正相关(r=0.255 4)。植酸含量与无机磷含量极显著正相关(r=0.479 6)；4)品种(系)间的总磷含量近似值为5.54~9.69 μg/mg，不能用无机磷含量间接反映不同品种(系)间的植酸含量。 |
| 关键词: 小麦 植酸含量 无机磷含量 相关性 |
| DOI：10.11841/j.issn.1007-4333.2014.05.02 |
| 投稿时间：2013-09-18 |
| 基金项目:农业部现代农业产业技术体系（201402910110429） |
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| Variation of phytic acid and inorganic P contents in wheat grain andtheir relation ship with test weight and 1 000-kernel weight |
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ZHANG Xiao-hua, DUAN Xiao-liang, HOU Chun-yu, ZHANG Ting, XU Lan-jie, LÜ Yan-hua, LIANG Rong-qi, YOU Ming-shan
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| (College of Agronomy and Biotechnology/State Key Laboratory for Agrobiotechnology/Beijing Key Laboratory of Crop Genetic improvement/Key Laboratory of Crop Genomicsand Genetic Improvement of Ministry of Agriculture, China Agricultural University, Beijing 100193, China) |
| Abstract: |
| In order to investigate the distribution of phytic acid content and inorganic P content in wheat grain and their relationship with test weight (TW) and 1000-kernel weight (TKW), and then obtain ahint for new cultivars improvement, the grain whole-mills of 92 common wheat cultivars/lines were determined with ferric chloride precipitation and phosphomolybdenum yellow spectrophotometry simultaneously.The results showed that the inorganic P content ranged from 0.42 μg/mg to 1.60 μg/mg (mean 0.84 μg/mg) with variation coefficient 0.24, while the phytic acid content ranged from 17.54 μg/mg to 28.71 μg/mg (mean 23.27 μg/mg) with variation coefficient 0.09.The phytic acid content correlated significantly with TW (r=-0.209 2), but not with TKW.The inorganic P content correlated significantly with TW(r=-0.231 5)and TKW (r=0.255 4).The phytic acid content correlated significantly with the inorganic P content (r=0.479 6).The phytic acid contents could not be indirectly determined by the inorganic P contents as the total P contents ranged from 5.54-9.69 μg/mg among different cultivars/lines. |
| Key words: wheat phytic acid content inorganic P content correlation |
