Paclobutrazol Can Reduce the Negative Effects of Salinity on Reproductive Growth, Yield and Fruit Quality of Strawberry Plant

Abstract

Strawberry plants (Fragaria × ananassa Duch.) are very susceptible to salinity. In order to investigate the interactive effects of paclobutrazol (PP 333) and salinity on flowering, yield and fruit quality of strawberry plants, three levels of NaCl [0, 5, 10 mM] were incorporated into the nutrient solution and four levels of PP 333 [0, 10, 20, 30 mg/L] were sprayed on the plants. PP 333 application caused reduction in inflorescence length, but increased inflorescence and flower number. Salinity reduced number of achenes per fruit. However a foliar application of 10 mg/L of PP 333 reduced the effect of salinity at 10 mM NaCl salinity and significantly increased the number of achenes per fruit. PP 333 at 30 mg/L completely overcame any negative effects of 10 mM NaCl salinity on fruit yield while increasing fruit total soluble solids (TSS). The highest level of PP 333 (30 mg/L) resulted in reduced titratable acidity (TA) on salt-treated (5, 10 mM) plants. The ratio of TSS/TA tended to increase with increased application rates of PP 333. Salinity resulted in reduced vitamin C, but applications of 20 mg/L of PP 333 significantly increased vitamin C in both levels of salinity (5, 10 mM).

The Use of Halophytic Companion Plant (Portulaca oleracea L.) on Some Growth, Fruit, and Biochemical Parameters of Strawberry Plants under Salt Stress

“…In this study, salinity stress resulted in a reduction in vitamin C content and lycopene contents in strawberry. Jamalian et al [53] showed that salinity reduced the vitamin C content of strawberries, which was in line with the results of the present study. The decrease in the vitamin C content of fruits at high salinity levels can be attributed to the decrease in carbohydrate (sugar) production caused by the decrease in photosynthesis required for vitamin C biosynthesis.…”

The Use of Halophytic Companion Plant (Portulaca oleracea L.) on Some Growth, Fruit, and Biochemical Parameters of Strawberry Plants Under Salt Stress

“…In this study, salinity stress resulted in a reduction in vitamin C content and lycopene contents in strawberry. Jamalian et al [32] showed that salinity reduced the vitamin C content of strawberry, which is in line with the results of the present study. The decrease in vitamin C content of fruit at high salinity levels was be attributed to the decrease in carbohydrate (sugar) production caused by the decrease in photosynthesis required for vitamin C biosynthesis.…”

Tuz stresinde yetiştirilen çilek bitkisinde hümik asit uygulamasının fizyolojik ve biyokimyasal etkisinin belirlenmesi

“…Decrease in strawberry yield under salinity stress could be attributed to reduction in photosynthesis and eventually reduction in the flower fruit formation (Saied et al, 2005). Salt stress can decrease fruit quality such as the vitamin C and lycopene content of strawberry (Jamalian et al 2008;Karakas et al, 2021) Our results are in line with the results of previous studies.…”