2.3. Nitric oxide treatment and inoculation Mango fruit were disinfected with 2% (v/v) sodium hypochlorite for 2 min, rinsed with tap water, air-dried and then divided randomly into 2 treatment groups, with 350 fruit for each group. The first group was immersed in 0.1 mM sodium nitroprusside (SNP) (Sigma–Aldrich, Shanghai, China) in water at 25 ± 1 ◦C for 5 min, and the other group (control) was immersed in distilled water for 5 min. Twenty-four hours after treatment with SNP or water, a uniform wound (3 mm deep × 6 mm wide) was made at the equator of each fruit using a sterile nail. The white latex was removed from the wound using a pipette, and then 20-L of spore suspension of C. gloeosporioides (1 × 106 spores per milliliter) was inoculated into the wounded site using a pipette. Inoculated fruit were stored at 25 ± 1 ◦C and RH 85–90%. Lesion diameter was recorded at 2, 4, 6 and 8 d after inoculation. Three replicates were performed for each treatment, and each replicate contained 30 fruit. Uninoculated fruit were stored under the same conditions to evaluate natural decay and physio-biochemical parameters at regular intervals.
2.3. Nitric oxide treatment and inoculation Mango fruit were disinfected with 2% (v/v) sodium hypochlorite for 2 min, rinsed with tap water, air-dried and then divided randomly into 2 treatment groups, with 350 fruit for each group. The first group was immersed in 0.1 mM sodium nitroprusside (SNP) (Sigma–Aldrich, Shanghai, China) in water at 25 ± 1 ◦C for 5 min, and the other group (control) was immersed in distilled water for 5 min. Twenty-four hours after treatment with SNP or water, a uniform wound (3 mm deep × 6 mm wide) was made at the equator of each fruit using a sterile nail. The white latex was removed from the wound using a pipette, and then 20-L of spore suspension of C. gloeosporioides (1 × 106 spores per milliliter) was inoculated into the wounded site using a pipette. Inoculated fruit were stored at 25 ± 1 ◦C and RH 85–90%. Lesion diameter was recorded at 2, 4, 6 and 8 d after inoculation. Three replicates were performed for each treatment, and each replicate contained 30 fruit. Uninoculated fruit were stored under the same conditions to evaluate natural decay and physio-biochemical parameters at regular intervals.
การแปล กรุณารอสักครู่..
