Assessment of tolerence characteristics to fungal diseases and nematodes infection susceptibility in some black pepper varieties under greenhouse conditions

Abstract

The study was conducted on five black pepper varieties including Vinh Linh, Indian, Trau, Loc Ninh and Se black pepper variety with the aim of testing and evaluating the variety. Black pepper is resistant to fungal diseases and nematodes under net house conditions, grown on infected soil and supplemented with disease sources. Experiments under net house conditions showed that compared with the Se black pepper variety, the density of fungal diseases in Vinh Linh black pepper’s soil decreased by 65.7%, the density of soil nematodes decreased by 53%, the density of nematodes in the roots decreased by 37.5%; The density of fungal diseases in the soil of buffalo black pepper cultivation decreased by 55%, the density of soil nematodes decreased by 43%, the nematode in the roots decreased by 33%. The results of assessing the growth rate of pepper varieties also showed that Vinh Linh and Trau pepper varieties grew 2.34 times and 2.46 times faster than Se pepper varieties. Research results show that Vinh Linh and Trau are the two pepper varieties that meet the set criteria (disease rate below 30%, mortality rate less than 10%, density of fungi and nematodes reduced by over 50%), these two varieties have better resistance to fungal diseases and nematodes than other pepper varieties, good growth rate. From this result, Vinh Linh pepper variety and Trau pepper variety were selected and proposed to be tested on field scale.