ARBUSCULAR MYCORRHIZAL FUNGI ASSOCIATED WITH PEPPER TEN LINES RHIZOSPHERE CHILLIES CAPSICUM FRUTESCENS

Abstract

THE PEPPERS BUSINESS IS AN IMPORTANT SEGMENT OF THE BRAZILIAN AGRICULTURAL MARKET, WITH STRONG EXPRESSION IN THE FOOD, PHARMACEUTICAL AND COSMETIC INDUSTRIES. THE OBJECTIVE OF THIS WORK WAS TO DETERMINE THE MYCORRHIZAL COLONIZATION RATE, SPORE DENSITY AND MYCORRHIZAL FUNGI GENOTYPES ASSOCIATED WITH THE RHIZOSPHERE OF TEN LINES OF CHILLI PEPPERS (CAPSICUM FRUTESCENS). THE EXPERIMENTAL DESIGN WAS COMPLETELY RANDOMIZED, WITH 10 TREATMENTS AND 4 REPLICATES, WITH THE TEN STRAINS OF CAPSICUM FRUTESCENS: IFET-1121; IFET-1109; IFET-1129; IFET-1119; IFET-1117; IFET-1137; IFET-1131; IFET-1127; IFET-1125 AND IFET-1111. THE SPORES OF ARBUSCULAR MYCORRHIZAL FUNGI (AMF) WILL BE EXTRACTED FROM THE SOIL USING 50 CM�³ OF EACH COMPOSITE SAMPLE, USING THE WET SIEVING TECHNIQUE. THE DETERMINATION OF THE PERCENTAGE OF MYCORRHIZAL COLONIZATION OCCURRED THROUGH THE TECHNIQUE OF INTERSECTION OF THE QUADRANTS. THE IDENTIFICATION OF MYCORRHIZAL FUNGI SPECIES WAS BY MORPHOLOGICAL COMPARISON BASED ON THE DESCRIPTIONS OF THE REFERENCE CULTURES PRESENT IN THE INTERNATIONAL CULTURE COLLECTION OF ARBUSCULAR AND VESICULAR-ARBUSCULAR MYCORRHIZAL FUNGI. THE SPORE NUMBER AND MYCORRHIZAL COLONIZATION DATA WILL BE SUBMITTED TO CLASSICAL STATISTICAL ANALYSIS USING THE ASSISTAT PROGRAM (2016). THE GENUS ACAULOSPORA, CLAROIDEOGLOMUS, DIVERSISPORA, SCUTELLOSPORA, SCLEROCYSTIS, GLOMUS, FUNNELIFORMIS AND GIGASPORA ASSOCIATED WITH THE RHIZOSPHERE OF THE CAPSICUM FRUTESCENS STRAINS WERE IDENTIFIED. THE GENERA GLOMUS, ACAULOSPORAND CLAROIDEOGLOMUSWERE FOUND IN ALL STRAINS ANALYZED. THE IFET - 1127 STRAIN PRESENTED HIGHER SPORE DENSITY VALUES WHEN COMPARED TO THE OTHER STRAINS STUDIED. NO SIGNIFICANT DIFFERENCE WAS FOUND IN THE VALUES OF MYCORRHIZAL COLONIZATION RATE AMONG THE INVESTIGATED STRAINS