A. Martensson et I. Rydberg, VARIABILITY AMONG PEA VARIETIES FOR INFECTION WITH ARBUSCULAR MYCORRHIZAL FUNGI, Swedish Journal of Agricultural Research, 24(1), 1994, pp. 13-19
The variability among 16 pea varieties for infection with arbuscular m
ycorrhizal fungi (AMF) was investigated. AMF-inoculated peas were grow
n in the greenhouse and nitrogen in actively growing leaves was determ
ined. Shoot and pod dry matter production and contents of phosphorus a
nd nitrogen, root lengths and AMF-root infections were determined. The
degree of infections differed between varieties. The varieties 'Filby
' (leafless), 'Maro','Vreta' and 'Sv. C 401 29' with weak/middle root
lengths showed high mycorrhizal infection. A negative relationship exi
sted between infection frequency and root lengths. Nitrogen uptake was
improved in eight cultivars by AMF during early plant development. Th
e nitrogen contents of older plants, at early ripening stage, did not
differ between AMF-infected of uninfected plants. No cultivar differen
ces either in early uptake of phosphorus or pod content of phosphorus
at early ripening stage were seen between AMF-infected of uninfected p
lants. Phosphorus uptake in shoots at early ripening was increased by
AMF infections in eight varieties. No relationship existed between AMF
infection frequencies and total nitrogen/phosphorus plant uptake. The
above-ground dry matter production was increased in four varieties wh
en AMF-infected.