Table 1.
Ecotype and some agronomic traits of rice cultivars used in the present study.
Fig 1.
Roots of O. sativa var. Sahel 202 with and without AMF structures.
Roots free of AMF structures (A); root fragment colonized by G. aggregatum, with extraradical spores (B); root fragment colonized by R. irregularis presenting typical endospores (C); and root fragment colonized by G. aggregatum, with arbuscules (D).
Table 2.
O. sativa var. Sahel 202 heading and maturity dates and panicle weight for the 1st and 2nd year trials.
Fig 2.
Mycorrhizal inoculation effect (MIE) for the 10 agronomic traits of each rice variety in both first (black line) and second (grey line) year trials.
Abbreviations associated to the variety names indicate the rice species (Os: O. sativa; Og: O. glaberrima) and ecotype (Upl: Upland, Irr: Irrigated, Rll: Rainfed lowland). HI: harvest index; 1000GWT: 1000 grain weight; GFD: grain filling duration. Stars indicate that the means of inoculated plants and non-inoculated plants were significantly different (P<0.05).
Table 3.
Agronomic traits of inoculated and non-inoculated plants of the 8 rice varieties cultivated under irrigated filed conditions.
Fig 3.
Matrix plot depicting the response to inoculation with AMF (MIE) of rice at variety and ecotype levels.
HI: harvest index; 1000GWT: 1000 grain weight; GFD: grain filling duration. Numbers associated to the variety names (NE: NERICA; W: WAB; Sah: Sahel; TO: TOG) indicate the year of trial (1: first year and 2: second year).
Fig 4.
NMDS representation of the rice ecotypes based on the Bray-Curtis similarity measure of their response to inoculation with AMF (MIE) for yield, harvest index and spikelet fertility.
Abbreviations Upl, Irr and Rll indicate the upland, irrigated and rainfed lowland rice ecotypes, respectively. To reduce the stress value, a three-dimensional ordination space was chosen of which two coordinates are shown.
Table 4.
Contribution of agronomic traits to the differences recorded in response to inoculation with AMF (MIE) of rice ecotypes in both first and second year trials, revealed by Similarity percentage (SIMPER).