以福建主栽的橄榄(Canarium album (Lour.) Rauesch.)品种‘长营’种子为材料,观察其成熟种子及不同发育时期种子的形态结构,对数量性状进行测量与统计分析,并运用概率分级建立形态指标的正态分布分级标准。结果显示,橄榄种子表型性状...以福建主栽的橄榄(Canarium album (Lour.) Rauesch.)品种‘长营’种子为材料,观察其成熟种子及不同发育时期种子的形态结构,对数量性状进行测量与统计分析,并运用概率分级建立形态指标的正态分布分级标准。结果显示,橄榄种子表型性状和形态结构变异较大,各数量性状变异系数为6.77%~19.04%,具有丰富的遗传多样性;橄榄种子心室类型有12种,其中三心室占比最高(97.80%);胚数量0~4个不等;经K-S检验,各数量性状符合正态分布,依据各性状可划分为5级分级标准。本研究为橄榄种质的系统学研究提供了种子形态方面的新内容,可为橄榄资源描述的标准化及遗传育种研究提供一定的参考。展开更多
The contents of total phenolics and extractable condensed tannins in the leaves, twigs and stem bark of Canarium album were determined. The structural heterogeneity of condensed tannins from stem bark was characterize...The contents of total phenolics and extractable condensed tannins in the leaves, twigs and stem bark of Canarium album were determined. The structural heterogeneity of condensed tannins from stem bark was characterized by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry （MALDI-TOF MS） and nuclear magnetic resonance （NMR） analyses The results show the predominance of signals representative of procyanidins and prodelphinidins. In addition, epicatechin and epigallocatechin polymers with galloylated procyanidin or prodelphinidin were also observed. The tannins were screened for their potential antioxidant activities using l,l-diphenyl-2-picrylhydrazyl （DPPH） and ferric reducing/antioxidant power （FRAP） model systems. Tannins extracted from leaves, twigs and stem bark all showed a very good DPPH radical scavenging activity and ferric reducing power.展开更多
文摘以福建主栽的橄榄(Canarium album (Lour.) Rauesch.)品种‘长营’种子为材料,观察其成熟种子及不同发育时期种子的形态结构,对数量性状进行测量与统计分析,并运用概率分级建立形态指标的正态分布分级标准。结果显示,橄榄种子表型性状和形态结构变异较大,各数量性状变异系数为6.77%~19.04%,具有丰富的遗传多样性;橄榄种子心室类型有12种,其中三心室占比最高(97.80%);胚数量0~4个不等;经K-S检验,各数量性状符合正态分布,依据各性状可划分为5级分级标准。本研究为橄榄种质的系统学研究提供了种子形态方面的新内容,可为橄榄资源描述的标准化及遗传育种研究提供一定的参考。
基金Project supported by the National Natural Science Foundation of China (No. 30671646)the Program for New Century Excellent Talents in University, China (No. NCET-07-0725)the Program for Innovative Research Team in Science and Technology in Fujian Province University, China
文摘The contents of total phenolics and extractable condensed tannins in the leaves, twigs and stem bark of Canarium album were determined. The structural heterogeneity of condensed tannins from stem bark was characterized by matrix-assisted laser desorption/ionization time-of-flight mass spectrometry （MALDI-TOF MS） and nuclear magnetic resonance （NMR） analyses The results show the predominance of signals representative of procyanidins and prodelphinidins. In addition, epicatechin and epigallocatechin polymers with galloylated procyanidin or prodelphinidin were also observed. The tannins were screened for their potential antioxidant activities using l,l-diphenyl-2-picrylhydrazyl （DPPH） and ferric reducing/antioxidant power （FRAP） model systems. Tannins extracted from leaves, twigs and stem bark all showed a very good DPPH radical scavenging activity and ferric reducing power.
