Development of mango wilt in mango cultivars submitted to salt stress

Abstract

development was evaluated at 42 days after inoculation. During this period, the plants were also submitted to salinization. After disease evaluation, the stems of plants from each treatment were collected to determine the concentrations of chlorine (Cl) and sodium (Na). Plants from the 2 cultivars showed reduced mango wilt symptoms as the NaCl doses increased from 0 to 90 mmol·L -1 . Plants submitted to the highest NaCl doses showed greater Cl and Na concentrations on the stem. In conclusion, the resistance of plants against C. fimbriata infection can be potentiated when submitted to salt stress regardless of their basal level of resistance to mango wilt.

Unlocking the inherent potential of plant genetic resources: food security and climate adaptation strategy in Fiji and the Pacific

“…Olesen ( 2011 ) however, reported positive influence of warming on mango production in Northern New South Wales, Australia, where winter temperature rise of 1.5 °C between 1963 and 2009 decreased the time to fruit maturity by 12–16 days (7–8%). Mango trees are salt intolerant and saline soils may induce necrosis, leaf abscission and defoliation, stem dieback, reduced growth and may also impair their defensive mechanism against pathogens (Bally 2006 ; Janick and Paull 2008 ; Vieccelli 2017 ). Deivasigamani et al ( 2019 ) reported adverse impacts on morphological parameters of mango seedlings subjected to salt stress including reduced girth, height, number of leaves, leaf area and specific leaf weight.…”