Characterization of the reproductive morphology in genus </span><i><span style="font-family:Verdana;">Zingiber</span></i><span style="font-family:Verdana;"> is &...Characterization of the reproductive morphology in genus </span><i><span style="font-family:Verdana;">Zingiber</span></i><span style="font-family:Verdana;"> is </span><span style="font-family:Verdana;">still relevant on classical taxonomic studies because most of the species are phenotypically similar and difficult to distinguish in the absence of the flowering stage. Reports mainly derived based on the herbarium collections are insufficient for the detailed morphological review. </span><i><span style="font-family:Verdana;">Zingiber</span></i><span style="font-family:Verdana;"> <i>barbatum</i> </span><span style="font-family:Verdana;">(Wall.) belongs to the genus </span><i><span style="font-family:Verdana;">Zingiber</span></i><span> </span><span style="font-family:Verdana;">and has been neglected for a long time. Existed intraspecific morphological and genetic variations also intricate the description of this sp</span><span style="font-family:Verdana;">ecies. The objective of this study was to characterize the reproductive morphology</span><span style="font-family:Verdana;"> of under-exploited </span><i><span style="font-family:Verdana;">Z.</span></i><span style="font-family:Verdana;"> <i>barbatum</i> </span><span style="font-family:Verdana;">species. The study was done based on the traditional description of morphology and habit of inflorescence and flowers, with a recording of minimum quantitative and qualitative parameters and phenological observation regarding inflorescence life span and duration of blossom. Assessment of reproductive morphology dis</span><span style="font-family:Verdana;">played phenotypic variations regarding inflorescences habit during the growth</span><span style="font-family:Verdana;"> stage and morphological features of the flower. Perhaps, an existed variation was driven by eco-geographical factors resulting in reproductive isolation due to which genetic divergence might occur. The taxonomic affiliation of </span><i><span style="font-family:Verdana;">Z.</span></i><span style="font-family:Verdana;"> <i>barbatum</i> </span><span style="font-family:Verdana;">based on inflorescence habit has been confirmed. This is the first comprehensive report regarding flower biology on </span><i><span style="font-family:Verdana;">Z.</span></i><span style="font-family:Verdana;"> <i>barbatum</i></span><span style="font-family:Verdana;">.展开更多
We report the vegetative proliferation and new phenomenon of ＂secondary proliferated inflorescences＂ In the grass Ischaemum barbatum Retz, as determined by anatomical analysis of prepared sections of inflorescences....We report the vegetative proliferation and new phenomenon of ＂secondary proliferated inflorescences＂ In the grass Ischaemum barbatum Retz, as determined by anatomical analysis of prepared sections of inflorescences. Leaves and shoots could be developed from the original splkelets of Inflorescences and plantlets developed when these shoots were transplanted to moist soil. ＂Secondary proliferated Inflorescences＂ is the first name here because some inflorescences that developed inadequacy are grown from the splkelet on the mother Inflorescence. Our investigation showed that this form of vegetative proliferation and secondary proliferated inflorescences development of L barbatum has arisen following late autumn fires of the previous year. It Is suggested that the sudden onset of a fire could lead to a hormone Imbalance or a chemical induction, which results in ephemeral vegetative proliferation even secondary proliferated inflorescences development in wild populations.展开更多
文摘Characterization of the reproductive morphology in genus </span><i><span style="font-family:Verdana;">Zingiber</span></i><span style="font-family:Verdana;"> is </span><span style="font-family:Verdana;">still relevant on classical taxonomic studies because most of the species are phenotypically similar and difficult to distinguish in the absence of the flowering stage. Reports mainly derived based on the herbarium collections are insufficient for the detailed morphological review. </span><i><span style="font-family:Verdana;">Zingiber</span></i><span style="font-family:Verdana;"> <i>barbatum</i> </span><span style="font-family:Verdana;">(Wall.) belongs to the genus </span><i><span style="font-family:Verdana;">Zingiber</span></i><span> </span><span style="font-family:Verdana;">and has been neglected for a long time. Existed intraspecific morphological and genetic variations also intricate the description of this sp</span><span style="font-family:Verdana;">ecies. The objective of this study was to characterize the reproductive morphology</span><span style="font-family:Verdana;"> of under-exploited </span><i><span style="font-family:Verdana;">Z.</span></i><span style="font-family:Verdana;"> <i>barbatum</i> </span><span style="font-family:Verdana;">species. The study was done based on the traditional description of morphology and habit of inflorescence and flowers, with a recording of minimum quantitative and qualitative parameters and phenological observation regarding inflorescence life span and duration of blossom. Assessment of reproductive morphology dis</span><span style="font-family:Verdana;">played phenotypic variations regarding inflorescences habit during the growth</span><span style="font-family:Verdana;"> stage and morphological features of the flower. Perhaps, an existed variation was driven by eco-geographical factors resulting in reproductive isolation due to which genetic divergence might occur. The taxonomic affiliation of </span><i><span style="font-family:Verdana;">Z.</span></i><span style="font-family:Verdana;"> <i>barbatum</i> </span><span style="font-family:Verdana;">based on inflorescence habit has been confirmed. This is the first comprehensive report regarding flower biology on </span><i><span style="font-family:Verdana;">Z.</span></i><span style="font-family:Verdana;"> <i>barbatum</i></span><span style="font-family:Verdana;">.
文摘为了有效利用野生牛扁资源,对牛扁不同极性提取物的活性进行了研究.结果表明牛扁提取物具有良好的抗氧化活性和抑菌活性.其中乙酸乙酯、正丁醇提取物对ABTS、DPPH、·OH自由基清除活性较强;石油醚提取物对ABTS、DPPH、·OH自由基清除能力次之;水提取物对ABTS自由基清除能力较好.乙酸乙酯提取物对白色葡萄球菌、枯草芽孢杆菌、大肠杆菌均具有较强的抑菌活性,最低抑制浓度均为12.5mg/m L;正丁醇提取物对白色葡萄球菌和枯草芽孢杆菌具有抑制作用,最低抑制浓度分别为100mg/m L、25mg/m L.
文摘We report the vegetative proliferation and new phenomenon of ＂secondary proliferated inflorescences＂ In the grass Ischaemum barbatum Retz, as determined by anatomical analysis of prepared sections of inflorescences. Leaves and shoots could be developed from the original splkelets of Inflorescences and plantlets developed when these shoots were transplanted to moist soil. ＂Secondary proliferated Inflorescences＂ is the first name here because some inflorescences that developed inadequacy are grown from the splkelet on the mother Inflorescence. Our investigation showed that this form of vegetative proliferation and secondary proliferated inflorescences development of L barbatum has arisen following late autumn fires of the previous year. It Is suggested that the sudden onset of a fire could lead to a hormone Imbalance or a chemical induction, which results in ephemeral vegetative proliferation even secondary proliferated inflorescences development in wild populations.
