The floral organ morphology,pollen morphology,quantity,and viability of Rumex,Rumex hanus F1,Rumex hanus 1,and Rumex hanus 2 were compared and analyzed.The results showed that the longitudinal diameter of petals was n...The floral organ morphology,pollen morphology,quantity,and viability of Rumex,Rumex hanus F1,Rumex hanus 1,and Rumex hanus 2 were compared and analyzed.The results showed that the longitudinal diameter of petals was not significantly different among different varieties of sorrel,and the transverse diameter and corolla diameter showed differences to varying degrees.They all had six stamens and three stigmas.The pollen shape of the four varieties was prolate,and the polar view was trilobated and round.They all had three germinal furrows,and the outer wall of the pollen was decorated with small cavities and spiny patterns,with warty protrusions.The equatorial axis length of pollen of different varieties of sorrel was significantly different(P<0.05).There were no significant differences in pollen amount among different varieties.There were six anthers in a single flower,featuring anther dehiscence.The pollen viability of Rumex hanus 1 was significantly lower than that of the other three varieties(P<0.05).Therefore,through the analysis of the floral organs and morphological characteristics of anthers of sorrel,the varieties of sorrel can be effectively distinguished and identified.展开更多
[目的]为探讨黄河上游特有鱼类似鲇高原鳅(Triplophysa siluroides)肠道菌群组成、产酶能力及其生长特性。[方法]采用传统培养法分离似鲇高原鳅的肠道细菌,并通过16S r RNA序列分析对其肠道菌群种类进行鉴定,同时利用筛选培养基筛选产...[目的]为探讨黄河上游特有鱼类似鲇高原鳅(Triplophysa siluroides)肠道菌群组成、产酶能力及其生长特性。[方法]采用传统培养法分离似鲇高原鳅的肠道细菌,并通过16S r RNA序列分析对其肠道菌群种类进行鉴定,同时利用筛选培养基筛选产蛋白酶、脂肪酶、淀粉酶的菌株,进而对产酶活性较强的菌株进行生长特性分析。[结果]研究发现似鲇高原鳅肠道菌群主要归属于变形细菌门(Proteobacteria)中的气单胞菌属(Aeromonas)、假单胞菌属(Pseudomonas)、不动杆菌属(Acinetobacter)和希瓦氏菌属(Shewanella),其中气单胞菌属为优势菌群。产酶能力分析发现产酶菌株有11株,分别为隶属于不动杆菌属的G1、G2、G3、G4、G7、G10和气单胞菌属的G5、G6、G8、G9、G11,其中G1、G2、G4、G5、G6、G7这几株菌株综合产酶能力强,G1、G5产蛋白酶和脂肪酶,G2、G4产蛋白酶和淀粉酶,G3、G11产蛋白酶,G6产蛋白酶、脂肪酶和淀粉酶,G7产脂肪酶和淀粉酶。生长特性分析发现G1、G2、G4、G5、G6、G7这几株菌株最适温度都是28℃,最佳p H值是7.0~8.0,最佳盐度是0.6%~1.0%,最佳接种量是6%~8%,在培养24 h~30 h后生长趋于平缓、进入稳定期。[结论]似鲇高原鳅肠道菌群可分为1门4属,其中产酶菌株有11株,对其中6株具有较强产酶能力的菌株进行了生长特性分析,这为似鲇高原鳅肠道细菌的开发利用奠定了基础。展开更多
基金Supported by National Key Research and Development Plan Project of China(2023YFD1301200)。
文摘The floral organ morphology,pollen morphology,quantity,and viability of Rumex,Rumex hanus F1,Rumex hanus 1,and Rumex hanus 2 were compared and analyzed.The results showed that the longitudinal diameter of petals was not significantly different among different varieties of sorrel,and the transverse diameter and corolla diameter showed differences to varying degrees.They all had six stamens and three stigmas.The pollen shape of the four varieties was prolate,and the polar view was trilobated and round.They all had three germinal furrows,and the outer wall of the pollen was decorated with small cavities and spiny patterns,with warty protrusions.The equatorial axis length of pollen of different varieties of sorrel was significantly different(P<0.05).There were no significant differences in pollen amount among different varieties.There were six anthers in a single flower,featuring anther dehiscence.The pollen viability of Rumex hanus 1 was significantly lower than that of the other three varieties(P<0.05).Therefore,through the analysis of the floral organs and morphological characteristics of anthers of sorrel,the varieties of sorrel can be effectively distinguished and identified.
