Subjects: Biology >> Botany >> Applied botany submitted time 2023-07-26 Cooperative journals: 《广西植物》
Abstract： In order to understand the difference in microbial diversity between wild and cultivated Anemone altaica rhizosphere soil. and Illumina MiSeq high-throughput sequencing was used to study the microbial composition and diversity in rhizosphere soils between wild and cultivated A. altaica. The results were as follows: (1) Alpha diversity analysis showed that the diversity of fungi in the rhizosphere soil of wild A. altaica was significantly higher than that of cultivated A. altaica (P < 0.05), while the difference in bacterial diversity was not significant (P > 0.05). The non-metric multidimensional scaling (NMDS) revealed that the fungal community structures of wild and cultivated A. altaica rhizosphere soil had more significant differences. (2) A total of 9 566 operational taxonomic units (Otus) of bacteria belonged to 39 phyla, 127 classes, 315 orders, 500 families and 886 genera; and 2 670 operational taxonomic units (Otus) of fungi belonged to 15 phyla, 57 classes, 138 orders, 293 families and 597 genera. The bacterial phylum Proteobacteria, Acidobacteria, Actinobacteria and the fungal phylum Basidiomycota, Ascomycota, Mortierellomycota were the dominant phylas in the rhizosphere soil between wild and cultivated plants, despite their relative abundance was different. At genus level, Candidatus_udaeobacter, Norank_f_xanthobacteraceae and Rokubacteriales were the dominant rhizosphere soil bacteria of wild A. altaica. However, Candidatus_udaeobacter, Vicinamibacter and Rokubacteriales were the dominant rhizosphere soil bacteria of cultivated A. altaica. The dominant rhizosphere fungi of wild A. altaica were Mortierella, Sebacina and Russula, while the dominant rhizosphere fungi of the cultivated A. altaica were Sebacina, Mortierella and Unclassified_f_hyaloscyphaceae. (3) The redundancy analysis (RDA) showed that organic matter was the main factor affecting soil bacterial community (P < 0.05), and soil pH, alkali-hydrolyzable nitrogen and available phosphorus were the main factors affecting fungi communities (P < 0.05)., while bacterial community structure were not significantly correlated with soil pH, alkali-hydrolyzable nitrogen and available phosphorus (P > 0.05). In summary, our study revealed significant difference in the composition and diversity of rhizosphere microbial communities between wild and cultivated A. altaica, and the main soil factors influencing its rhizosphere microbial communities, the results of this study have certain significance for scientific planting and soil improvement of A. altaica.
Subjects: Biology >> Botany >> Applied botany submitted time 2020-09-15 Cooperative journals: 《广西植物》
Abstract：‘宝石1号’、‘晚香’和‘福晚８号’是2017年从福建省农业科学院果树研究所引进到广西南宁市的新品种（系）。为研究其在本地的生长发育和开花结果表现，以广西主栽品种：‘石硖’和‘桂明1号’为对照材料，研究其树体生长发育情况、产量、物候期、开花和落花落果规律及雌花开放数与温湿度的关系。结果表明：引进的3个龙眼新品种（系）高接后的植株长势和产量与‘石硖’相近，‘宝石1号’的单穗重最重，其次是‘福晚８号’，‘晚香’与2个主栽品种的相近；‘福晚８号’的果实成熟期最晚，生育期最长，达196 d，比‘桂明1号’长15 d。‘宝石1号’的花期最长，‘晚香’最短，3个新品种（系）的雌雄花开放顺序均为“雄~雌~雄~雌~雄”，‘宝石1号’和‘福晚８号’的雌雄花相遇时间较长，为18~19 d；3个龙眼新品种（系）在南宁均有3次落果高峰期，落果主要集中在6月份的第二次生理落果期。3个龙眼新品种（系）的雌花开放数与花前温湿度的关系密切，花期前后一定的温湿度范围内，较高的温度和较低的空气湿度有利于‘宝石1号’和‘福晚８号’的雌花开放，而较低的温度和较高的空气湿度有利于‘晚香’的雌花开放。综合来看，3个引进的福建龙眼新品种（系）在广西均能正常开花结果且表现较好，‘宝石1号’较早熟，‘福晚８号’成熟期最晚、雌雄花相遇时间长且落果率较低。
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