Evaluation and management of fungal-infected carrot seeds

Abstract

Carrot (Daucus carota L.), which is one of the 10 most important vegetable crops worldwide, is an edible root vegetable desired for its taste as well as its medicinal uses. However, a fungus isolated from carrot seeds was observed to substantially decrease the germination rate. The isolate was identified as Alternaria alternata based on morphological and molecular characteristics as well as a phylogenetic tree. The maximum seed infection rate of selected carrot cultivars was approximately 60%, with the main infection site just underneath the seed shell. Additionally, the germination rate of infected seeds decreased by 28.7%. However, the seed infection rate varied among the examined carrot cultivars. Regarding the effects of chemical fungicides, the optimal treatment involved immersing seeds in amistar top suspension concentrate (SC) (effective concentration of 0.65 g/L) for 6 h, which effectively killed the fungi inside the carrot seeds. The results of this study provide a theoretical basis for the development of efficient methods for preventing the infection of carrot seeds by specific fungi and increasing the germination rate and vigour index.

Control of Carrot Seed-Borne Pathogens by Aromatic Plants Distillates

“…Green issues and potential threats to human health arising from the long-term use of chemical fungicides require innovative plant protection solutions [11,12], also, due to infections of the seeds by Alternaria spp., the germination rate decreases [5]. Thus, screening for suitable biofungicides and optimising their applications is essential.…”

“…settlements in the treatment were calculated. Essential oil effect on pathogens was evaluated according to the infection rate using the formula below (1) [5]. Lower infection rate described the more effective activity to control seed-borne pathogens.…”

“…The Alternaria genus is well known as causal of destructive diseases of carrots, parsnips, celery, and parsley with symptoms such as seedling death, petiole base blackening, leaf death, black rot of the crown, and stored roots [4]. In addition to these features, this pathogen also adversely affects seed germination [5]. Seed-borne diseases can be managed by various strategies including chemical, cultural and technological methods [6].…”

Hydro-Electro Hybrid Priming Promotes Carrot (Daucus carota L.) Seed Germination by Activating Lipid Utilization and Respiratory Metabolism

“…Carrot (Daucus carota L.) is one of the most important root crops, and it is famous for its rich β-carotene and plant fiber contents [1][2][3]. According to the statistics of the Food and Agriculture Organization of the United Nations (FAO), China accounts for approximately 37% of the global carrot cultivation area and generates 48% of the global carrot yield, making it the largest carrot-producing country.…”

Evaluation of Seven Essential Oils as Seed Treatments against Seedborne Fungal Pathogens of Cucurbita maxima

“…This association between seeds and pathogens is an important means for the pathogens to spread on a large scale and a way to guarantee their survival in nature [ 7 , 8 , 9 ]. Seedborne pathogens can limit the production of many crops and can result in severe economic losses to growers [ 10 , 11 , 12 , 13 ].…”