Germination tests are currently the most widely used method to evaluate seed quality of Ginkgo biloba L., but they are time-consuming and labor intensive. Oxygen-sensing technology, based on the principle of fluoresce...Germination tests are currently the most widely used method to evaluate seed quality of Ginkgo biloba L., but they are time-consuming and labor intensive. Oxygen-sensing technology, based on the principle of fluorescence quenching to detect oxygen and assess seed quality was used to rapidly evaluate seed quality of two varieties (Shandong Tancheng 202 and Zhejiang Dafoshou) of G. biloba from five mother plants. Fifteen samples of three vigor levels were produced by accelerated aging treatments. This process was applied in duplicate. A portable oxygen-sensing detector was employed to measure oxygen content during seed germination in a closed system at 25 A degrees C each day until day 14. Four oxygen metabolism indices were calculated: oxygen consumption index, oxygen consumption rate, critical oxygen concentration, and theoretical germination time (T (GT)). Additionally, we tested laboratory germination and field emergence. The results of a one-way analysis of variance and correlation analysis showed that T (GT) was the candidate index to evaluate seed quality of G. biloba. Therefore, the T (GT) value was used to validate the reliability of oxygen-sensing evaluation for Zhejiang Dafoshou seeds kept under four storage conditions. The trend in the change in oxygen metabolism agreed completely agreement with that of seed germination under all storage conditions. The oxygen-sensing test reliably and rapidly assessed seed quality of G. biloba. The germination rate of Zhejiang Dafoshou was accurately predicted by T (GT).展开更多
药物依赖是当前神经科学研究的热点问题,其病因错综复杂。近年来,药物依赖与ATP结合盒B亚家族成员1转运蛋白(ATP-binding cassette subfamily B member 1 transporter,ABCB1)基因多态性的关系越来越受到关注,特别是位于26号外显子区域的...药物依赖是当前神经科学研究的热点问题,其病因错综复杂。近年来,药物依赖与ATP结合盒B亚家族成员1转运蛋白(ATP-binding cassette subfamily B member 1 transporter,ABCB1)基因多态性的关系越来越受到关注,特别是位于26号外显子区域的3435C>T。该文就阿片类药物依赖和镇痛耐受与ABCB1基因多态性的关系进行综述,对于深入阐明药物依赖的机制以及指导美沙酮个体化治疗具有重要意义。展开更多
基金supported by the National Natural Science Foundation of China(31371712,30800890)Natural Science Foundation of Zhejiang Province(LY13C130011,LY13C16007)+2 种基金Special Fund for Agro-scientific Research in the Public Interest of China(201303002)the Graduate Special Fund Innovative Projects of Jiangxi Province(YC2014-B035)the University Teachers’Professional Development Project of Zhejiang Province(FX2015050)
文摘Germination tests are currently the most widely used method to evaluate seed quality of Ginkgo biloba L., but they are time-consuming and labor intensive. Oxygen-sensing technology, based on the principle of fluorescence quenching to detect oxygen and assess seed quality was used to rapidly evaluate seed quality of two varieties (Shandong Tancheng 202 and Zhejiang Dafoshou) of G. biloba from five mother plants. Fifteen samples of three vigor levels were produced by accelerated aging treatments. This process was applied in duplicate. A portable oxygen-sensing detector was employed to measure oxygen content during seed germination in a closed system at 25 A degrees C each day until day 14. Four oxygen metabolism indices were calculated: oxygen consumption index, oxygen consumption rate, critical oxygen concentration, and theoretical germination time (T (GT)). Additionally, we tested laboratory germination and field emergence. The results of a one-way analysis of variance and correlation analysis showed that T (GT) was the candidate index to evaluate seed quality of G. biloba. Therefore, the T (GT) value was used to validate the reliability of oxygen-sensing evaluation for Zhejiang Dafoshou seeds kept under four storage conditions. The trend in the change in oxygen metabolism agreed completely agreement with that of seed germination under all storage conditions. The oxygen-sensing test reliably and rapidly assessed seed quality of G. biloba. The germination rate of Zhejiang Dafoshou was accurately predicted by T (GT).
文摘药物依赖是当前神经科学研究的热点问题,其病因错综复杂。近年来,药物依赖与ATP结合盒B亚家族成员1转运蛋白(ATP-binding cassette subfamily B member 1 transporter,ABCB1)基因多态性的关系越来越受到关注,特别是位于26号外显子区域的3435C>T。该文就阿片类药物依赖和镇痛耐受与ABCB1基因多态性的关系进行综述,对于深入阐明药物依赖的机制以及指导美沙酮个体化治疗具有重要意义。
