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2012 1

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偃麦草 1

多年生 1

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麦草 1

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Dissipation of polycyclic aromatic hydrocarbons and microbial activity in a field soil planted with perennialryegrass

Dengqiang FU, Ying TENG, Yuanyuan SHEN, Mingming SUN, Chen TU, Yongming LUO, Zhengao LI, Peter CHRISTIE

《环境科学与工程前沿（英文）》 2012年第6卷第3期页码 330-335 doi: 10.1007/s11783-011-0366-7

摘要： Dissipation and plant uptake of polycyclic aromatic hydrocarbons (PAHs) in contaminated agricultural soil planted with perennial ryegrass were investigated in a field experiment. After two seasons of grass cultivation the mean concentration of 12 PAHs in soil decreased by 23.4% compared with the initial soil. The 3-, 4-, 5-, and 6-ring PAHs were dissipated by 30.9%, 25.5%, 21.2%, and 16.3% from the soil, respectively. Ryegrass shoots accumulated about 280 μg·kg , shoot dry matter biomass reached 2.48 × 10 kg·ha , and plant uptake accounted for about 0.99% of the decrease in PAHs in the soil. Significantly higher soil enzyme activities and microbial community functional diversity were observed in planted soil than that in the unplanted control. The results suggest that planting ryegrass may promote the dissipation of PAHs in long-term contaminated agricultural soil, and plant-promoted microbial degradation may be a main mechanism of phytoremediation.

关键词： perennial ryegrass polycyclic aromatic hydrocarbon bioremediation plant uptake soil microbial activity

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小麦- 偃麦草远缘杂交选育多年生小麦述评 Review

崔磊,任永康,Timothy D. Murray,闫文泽,郭庆,牛瑜琦,孙玉,李洪杰

《工程（英文）》 2018年第4卷第4期页码 507-513 doi: 10.1016/j.eng.2018.07.003

摘要：

偃麦草属植物（Thinopyrum spp.）是小麦（Triticum aestivum L.）的近缘植物，具有多年生生长习性，并且抗多种生物胁迫和非生物胁迫，可以应用于小麦遗传改良。偃麦草的很多优良性状可通过渐渗育种培育小麦品种。偃麦草的多年生习性是一种由多个未知基因控制的复杂的数量性状。偃麦草属植物可以与普通小麦杂交产生双二倍体或部分双二倍体。此外，通过偃麦草直接驯化也可以选育多年生小麦。小麦- 偃麦草杂种后代结合了双亲的优异性状，可以粮饲兼用。小麦- 偃麦草杂种后代能够适应多种农业生态系统。本文总结了利用偃麦草培育多年生小麦的发展情况，以及小麦-偃麦草杂种的遗传特点、选育方法以及应用前景。

关键词：偃麦草麦草多年生小麦