Open AccessThe distribution and presence of versicular-arbuscular mycorrhiza fungi in rhizosphere soil of Da Xanh pummelo in Ba Ria Vung Tau province
Author(s) -
Huong N. D. Thai
Publication year - 2021
Publication title -
the journal of agriculture and development/the journal of agriculture and develoment/nông nghiệp và phát triển
Language(s) - English
Resource type - Journals
eISSN - 2615-949X
pISSN - 2615-9503
DOI - 10.52997/jad.2.02.2021
Subject(s) - rhizosphere , acaulospora , topsoil , mycorrhiza , spore , biology , glomus , colonization , soil fungi , soil horizon , botany , agronomy , horticulture , soil water , arbuscular mycorrhizal , symbiosis , ecology , genetics , bacteria
The study was carried out to determine the distribution and presence of versicular-arbuscular mycorrhiza (VAM) fungi in rhizosphere soil and roots of Da Xanh pummelo in Phu My town, Ba Ria Vung Tau province. The rhizosphere soil and root samples were collected from 6 - 7 years old pummelo of two main soil types, on two soil layers at depths of 0 - 20 cm and 20 - 40 cm, at 2/3 and the edge of canopy. The results showed that the presence of VAM spore density was higher in red basaltic soil (ferralsols) than black soil (luvisols), and common exist on the topsoil layer (0 - 20 cm) as well as the edge of canopy. Glomus and Acaulospora were two most abundant genera in survey areas, and the proportion of mycorrhizal spores ranged from 53.18 ± 2.59% to 58.54 ± 0.46 and from 23.68 ± 2.96% to 29.33 ± 0.64%, respectively. Increasing the soil depth negatively affected on spore density of VAM fungi. The VAM fungi composition aslo changed with soil depth. The percentage of root colonization by VAM fungi ranged from 56.20 ± 3.11% to 62.00 ± 3.37%, and the highest percentage of root colonization by VAM fungi was detected in red basaltic soil.