Record ID No. |
1102 |
Author(s) |
Kumutha,K., Sundaram,S., Sempavalan,J., Santhanakrishnan,P , 2004 |
Affiliation |
: Department of Agricultural Microbiology, Tamil Nadu Agrl. University, Coimbatore - 641 003, India. |
Title |
Screening of AM fungi for efficiency on growth and biochemical constituents of mulberry |
Source. Vol.(no):Page |
Biofertilizers-technology. 347-353p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Soil plant relations |
Sub-subjects |
Nursery Management |
Host |
Mulberry |
Organism |
Glomus mosseae, G. fasciculatum, Glomus etunicatum, Gigaspora, Acaulospora laevis |
Country |
India, Asia |
Abstracts |
Arbuscular mycorrhiza (AM) fungi are considered as obligate symbionts of crop plants for better utilization of P and other essential elements. Though, the importance of AM fungi in many horticulture and agriculture plants is well documented, studies are lacking in perennial cash crop mulberry. Nursery experiment was conducted to screen the AM fungal isolates on mulberry cultivar MR-2. Three isolates obtained from mulberry rhizosphere, viz., Glomus mosseae MGm-3, Glomus fasciculatum MGf 3 and Gigaspora sp. MGi 4 and other two isolates Glomus etunicatum and Acaulospora laevis were tested for efficiency. Samples were taken on 60 and 90 days after planting (DAP) and studied for growth, biochemical constituents such as, total chlorophyll, carbohydrate, reducing sugars in leaves, AM fungal colonization and phosphatases [phosphoric monoester hydrolases] activity in roots. Nitrogen and P contents of the leaves were also estimated. Inoculation of different AM fungal isolates significantly increased the dry matter production over the control. Maximum was registered with inoculation with Glomus fasciculatum and recorded 90% increase in shoot dry matter, 63% increase in root dry matter over control. Total chlorophyll content in leaves was significantly altered by mycorrhizal inoculation and also resulted in 14.6 to 15.7% increase in total carbohydrate content of leaves. Reducing sugar content in leaves was enhanced by 49% due to AM fungal inoculation. Inoculated plants had 2-3 fold increase in phosphatase activities of the root over uninoculated control. The enzyme activities were maximum with Glomus fasciculatum followed by Glomus mosseae. Among all AM fungi tested, Glomus fasciculatum colonized the roots effectively. Significant increase in total N and P content was noticed with Glomus fasciculatum inoculation over uninoculated control. |