应用SRAP(Sequence Related Amplified Polymorphism)标记,通过对6份待检测杂交油菜种子样品(油研50杂交种)和4份杂交油菜对照样品(油研9号、油研10号、油研11号和油研50)进行遗传多态性分析,计算出10份样品间的遗传相似性系数并绘制聚...应用SRAP(Sequence Related Amplified Polymorphism)标记,通过对6份待检测杂交油菜种子样品(油研50杂交种)和4份杂交油菜对照样品(油研9号、油研10号、油研11号和油研50)进行遗传多态性分析,计算出10份样品间的遗传相似性系数并绘制聚类分析图。以相似性系数的大小来鉴定6份待测样品的品种真实性。本研究为种子管理部门针对油菜种子执法提供了一种鉴定杂交种真实性的快速方法。结果表明:对10份样品进行SRAP引物组合筛选,在分析的80对引物组合中找到多态性引物组合39对,检测到多态性位点101个。经聚类分析表明,6份待鉴样品和对照样品油研50被聚为一类,它们之间的相似性系数在0.92～0.96之间,均大于0.9,而油研9号、油研10号、油研11号被聚为其它3类,它们与油研50之间相似性系数在0.37～0.48之间,均小于0.9。因此本研究认为,以相似性系数0.9为阈值是一种鉴定油菜杂交种真实性的可行办法。展开更多
[Objective] The aim was to investigate the genetic diversity of the main commercial varieties of Brassica napus in Guizhou Province at the molecular level. [Method] Nine main commercial rapeseed cultivars in Guizhou w...[Objective] The aim was to investigate the genetic diversity of the main commercial varieties of Brassica napus in Guizhou Province at the molecular level. [Method] Nine main commercial rapeseed cultivars in Guizhou were detected by 40 pairs of SSR primers used in the national regional trial of B. napus, and then clus-tering analysis was carried out. [Result] A total of 191 bands were amplified, and 143 （accounting for 75%） of them showed polymorphism among the nine rapeseed cultivars. By cluster analysis, the nine cultivars were divided into two groups. Group A included seven varieties, and group B consisted of two cultivars from Guizhou In-stitute of Oil Crops. The cultivars in group A were further divided into sub-groups A1 and A2 at the similarity coefficient of 0.643 4. Sub-group A1 included three culti-vars from Guizhou Rapeseed Institute, and sub-group A2 included the other four cultivars from Guizhou Institute of Oil Crops. [Conclusion] The cultivars bred by the same institute had similar genetic background. The cultivars from Guizhou Institute of Oil Crops showed wider genetic basis. However, the genetic similarity coefficient between Qianyou 17 and Qianyou 29 was up to 0.87, suggesting that they shared closer genetic basis.展开更多
β-葡聚糖酶可水解大麦等谷物中的葡聚糖,降低葡聚糖在单胃动物消化道内产生的抗营养作用。为获得高产β-葡聚糖酶菌株,采用常压室温等离子体(atmospheric and room temperature plasma,ARTP)诱变里氏木霉(Trichoderma reesei),经初筛...β-葡聚糖酶可水解大麦等谷物中的葡聚糖,降低葡聚糖在单胃动物消化道内产生的抗营养作用。为获得高产β-葡聚糖酶菌株,采用常压室温等离子体(atmospheric and room temperature plasma,ARTP)诱变里氏木霉(Trichoderma reesei),经初筛、复筛、遗传稳定性及酶学特性表征,突变株ARTP-9较出发菌株β-葡聚糖酶活力提高54.38%,为43.75 U/mL,产酶能力稳定遗传,酶的最适反应温度及pH分别为50℃和6.0,耐受温度为40~80℃,pH 2.5~6.5时酶活力稳定,Fe^(2+)、Mg^(2+)对酶活力有促进作用,Fe^(3+)、Mn^(2+)、Zn^(2+)、Ca^(2+)、Cu^(2+)对酶活力有抑制作用。以β-葡聚糖为底物,该粗酶的K m值和V max值分别为1.59 mg/mL和6.99μmol/(mg·min)。体外模拟消化实验表明,ARTP-9固态发酵酶制剂在胃期4 h黏度最低,为2.23 mPa·s;肠期21 h还原糖为0.70 mg/mL,是空白的3.2倍,差异显著(P<0.05),其大麦粉体外消化率为48.17%,较空白提升9.02%,差异极显著(P<0.01)。研究结果表明ARTP诱变技术能够显著提高里氏木霉β-葡聚糖酶活力,为其工业化生产奠定基础。展开更多
The immune responses of plants to foreign pathogens have developed relevant defense mechanisms, which formed complicated disease resistant signal transduction pathways. Salicylic acid（SA）, jasmonic acid（JA）/Ethyl...The immune responses of plants to foreign pathogens have developed relevant defense mechanisms, which formed complicated disease resistant signal transduction pathways. Salicylic acid（SA）, jasmonic acid（JA）/Ethylene（ET） and brassi- nosteroid （BR） could trigger the immune response to different pathogens in plants, making the plants show some resistance to the pathogens. The study on the trans- duction pathways of these three disease-resistant signals were introduced to provide some useful suggestions for the study on the transduction of disease-resistant sig- nals in plants.展开更多
文摘应用SRAP(Sequence Related Amplified Polymorphism)标记,通过对6份待检测杂交油菜种子样品(油研50杂交种)和4份杂交油菜对照样品(油研9号、油研10号、油研11号和油研50)进行遗传多态性分析,计算出10份样品间的遗传相似性系数并绘制聚类分析图。以相似性系数的大小来鉴定6份待测样品的品种真实性。本研究为种子管理部门针对油菜种子执法提供了一种鉴定杂交种真实性的快速方法。结果表明:对10份样品进行SRAP引物组合筛选,在分析的80对引物组合中找到多态性引物组合39对,检测到多态性位点101个。经聚类分析表明,6份待鉴样品和对照样品油研50被聚为一类,它们之间的相似性系数在0.92～0.96之间,均大于0.9,而油研9号、油研10号、油研11号被聚为其它3类,它们与油研50之间相似性系数在0.37～0.48之间,均小于0.9。因此本研究认为,以相似性系数0.9为阈值是一种鉴定油菜杂交种真实性的可行办法。
基金Supported by Special Fund for Seed Breeding from Guizhou Provincial Agricultural Committee[(2012)026]Agricultural Science and Technology Research Program of Department of Science and Technology of Guizhou Province[(2013)3003]+1 种基金Agricultural Science and Technology Research Program of Department of Science and Technology of Guizhou Province[(2013)3088]a grant from the Central Authorities of China for Supporting Local Platform Construction[(2011)4001]~~
文摘[Objective] The aim was to investigate the genetic diversity of the main commercial varieties of Brassica napus in Guizhou Province at the molecular level. [Method] Nine main commercial rapeseed cultivars in Guizhou were detected by 40 pairs of SSR primers used in the national regional trial of B. napus, and then clus-tering analysis was carried out. [Result] A total of 191 bands were amplified, and 143 （accounting for 75%） of them showed polymorphism among the nine rapeseed cultivars. By cluster analysis, the nine cultivars were divided into two groups. Group A included seven varieties, and group B consisted of two cultivars from Guizhou In-stitute of Oil Crops. The cultivars in group A were further divided into sub-groups A1 and A2 at the similarity coefficient of 0.643 4. Sub-group A1 included three culti-vars from Guizhou Rapeseed Institute, and sub-group A2 included the other four cultivars from Guizhou Institute of Oil Crops. [Conclusion] The cultivars bred by the same institute had similar genetic background. The cultivars from Guizhou Institute of Oil Crops showed wider genetic basis. However, the genetic similarity coefficient between Qianyou 17 and Qianyou 29 was up to 0.87, suggesting that they shared closer genetic basis.
基金Supported by the National Natural Science Foundation of China(31360262)Zhuke Contract(2012HK209-38)the Innovation Capacity Platform Construction Project of Guizhou Science and Technology Department(2011018)~~
文摘The immune responses of plants to foreign pathogens have developed relevant defense mechanisms, which formed complicated disease resistant signal transduction pathways. Salicylic acid（SA）, jasmonic acid（JA）/Ethylene（ET） and brassi- nosteroid （BR） could trigger the immune response to different pathogens in plants, making the plants show some resistance to the pathogens. The study on the trans- duction pathways of these three disease-resistant signals were introduced to provide some useful suggestions for the study on the transduction of disease-resistant sig- nals in plants.
