印度梨形孢对短期不同浓度钾磷钙处理下香蕉生长及光合特性的影响  

Effects of Piriformospora indica on the growth and photosynthetic characteristics of bananas under short-term treatments with different concentrations of potassium, phosphorus, and calcium

作　　者：田娜 王斌 武欢 伍俊为 刘嘉鹏 刘范 田雅 邓贵明[3] 程春振[1,2] 黄玉吉 TIAN Na;WANG Bin;WU Huan;WU Junwei;LIU Jiapeng;LIU Fan;TIAN Ya;DENG Guiming;CHENG Chunzhen;HUANG Yuji(College of Horticulture/Institute of Horticultural Biotechnology,Fujian Agriculture and Forestry University,Fuzhou 350002,China;College of Horticulture,Shanxi Agricultural University,Taigu 030801,China;Institute of Fruit Tree Research,Guangdong Academy of Agricultural Sciences,Guangzhou 510640,China)

机构地区：[1]福建农林大学园艺学院,园艺植物生物工程研究所,福州350002 [2]山西农业大学园艺学院,太谷030801 [3]广东省农业科学院果树研究所,广州510640

出　　处：《应用与环境生物学报》2022年第5期1281-1287,共7页Chinese Journal of Applied and Environmental Biology

基　　金：福建农林大学科技创新专项基金项目(CXZX2020026A);福建农林大学园艺学院优秀硕士论文基金项目(102/71201801101);福建农林大学“校杰出青年科研人才”计划项目(xjq201721);国家自然科学基金项目(31701900,31601713);国家现代农业产业技术体系建设专项资金项目(CARS-32-11)资助。

摘　　要：为研究印度梨形孢(Piriformospora indica)对香蕉抗缺素能力的影响,比较有P. indica定殖(PI组)和无定殖(CK组)的沙培香蕉苗在使用含100%、50%、25%和0%钾(K)、磷(P)、钙(Ca)的Hoagland营养液处理2周和4周后株高、茎粗、叶片数、叶片叶绿素相对含量、氮含量及叶绿素荧光参数等指标的差异.结果显示,处理2周后,随着钾、磷、钙含量的降低香蕉的长势逐步减弱,相同营养液处理的PI组株高、茎粗、F_(v)/F_(m)、F_(v)/F_(o)均略高于CK组,但差异不显著.处理4周后,PI组的大多数指标优于CK组,如PI-0%Ca的株高显著高于CK-0%Ca,约为1.10倍(P <0.05);PI-100%K的叶绿素相对含量与氮含量极显著高于CK-100%K,分别为1.13倍和1.11倍(P <0.01);PI-100%P和PI-0%Ca的叶绿素相对含量与氮含量显著高于各自CK组,均分别约为CK组的1.05和1.04倍;PI-50%Ca和PI-25%Ca的叶绿素相对含量与氮含量显著高于各自CK组,均分别约为CK组的1.07和1.06倍;PI-0%K、PI-25%P、PI-50%P与PI-50%Ca的F_(v)/F_(m)、F_(v)/F_(o)值均显著高于各自CK组.本研究表明,印度梨形孢可以促进香蕉生长,提高叶片叶绿素相对含量和氮含量,缓解短期低浓度钾、磷、钙对光系统的损伤,增强光合速率,进而提高香蕉抗缺素能力.To investigate the effects of Piriformospora indica colonization on banana nutrient deficiency resistance,clean river sand banana seedlings cultivated with(PI group) and without P. indica colonization(CK group) were subjected to treatments with different Hoagland solutions each containing 100%, 50%, 25%, and 0% of potassium(K), phosphorus(P), and calcium(Ca). Parameters including plant height, stem diameter, leaf number, relative chlorophyll content, nitrogen content, and chlorophyll fluorescence were determined and compared at 2 and 4 weeks post-treatment. At 2 weeks post-treatment, as the nutrient concentration decreased, the growth of the banana seedlings gradually decreased. Under treatment with the same nutrient solution, parameters such as plant height, stem diameter, F_(v)/F_(m), and F_(v)/F_(o) of the PI group were slightly higher than those of the corresponding CK group, although the differences were not significant. At 4 weeks post-treatment, most indices of the PI group were higher than those of their corresponding CK group. For example, the plant height of PI-0%Ca was significantly higher than that of CK-0%Ca, with a fold-change of approximately 1.10 times(P < 0.05). The relative chlorophyll and nitrogen contents of PI-100%K were both significantly higher than those of CK-100%K by approximately 1.13 and 1.11 times, respectively(P < 0.01). The relative chlorophyll and nitrogen contents of PI-100%P and PI-0%Ca were significantly higher than the respective CK groups by 1.05 and 1.04 times, respectively. The relative chlorophyll and nitrogen contents of PI-50%Ca and PI-25%Ca were significantly higher than their respective CK groups by approximately 1.07 and 1.06 times, respectively. Moreover, the F_(v)/F_(m) and F_(v)/F_(o) values of PI-0%K,PI-25%P, PI-50%P, and PI-50%Ca were all significantly higher than that of the corresponding CK groups. It was concluded that P. indica can promote nutrient absorption in bananas, increase the contents of chlorophyll and nitrogen, alleviate the photosystem damage caused

关 键 词：香蕉 印度梨形孢 缺素 生长 光合特性 

分 类 号：S668.1[农业科学—果树学]