期刊
SCIENTIA HORTICULTURAE
卷 257, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.scienta.2019.108649
关键词
Piriformospora indica; 'Tianbaojiao' banana; Growth; Biomass; Photosynthetic pigment contents
类别
资金
- Natural Science Funds for Distinguished Young Scholar of the Fujian Agriculture and Forestry University [xjq201721]
- Natural Science Foundation of China [31601713]
- earmarked Fund for China Agriculture Research System [CARS-31-15]
- Postdoctoral Funds of the Fujian Agriculture and Forestry University [132300197]
- Construction of Plateau Discipline of Fujian Province [102/71201801101]
Piriformospora indica is a plant growth- and disease resistance-promoting fungus in the Sebacinales family. In this study, the effect of this symbiotic fungus on the growth of tissue-cultured banana seedlings was investigated to explore its potential applications in the banana tissue culture industry. P. indica plugs (P-1) and a P. indica chlamydospore suspension (P-2) were co-cultured with banana seedlings in rooting medium to investigate their growth-promoting efficiency. Both the P-1 and P-2 treatments improved the plant biomass and chlorophyll contents of banana seedlings. The P-2 treatment had stronger promoting effects than the P-1 treatment, especially on plant height and root length in the first 3 weeks. At 4 weeks after inoculation, seedlings in the P-1 and P-2 treatments showed increased plant height, more and longer roots, increased shoot fresh weight, leaf width and length, and stem circumference compared with controls. The P. indica treatments also significantly enhanced the chlorophyll a, chlorophyll b, total chlorophyll, and carotenoid contents in banana leaves. The results of this study verified that the fungus can facilitate the growth of banana seedlings in vitro and shorten the rooting time of tissue-cultured banana seedlings. Therefore, it has the potential to improve the growth and quality of tissue-cultured banana plants.
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