توصيفگر ها :
گل محمدي , ژنوتيپ , قارچ مايكوريزا , جلبك دريايي , رشد رويشي , گلدهي , عناصرغذايي , سرمازدگي بهاره
چكيده انگليسي :
The process of using medical plants and their products in numerous industries has become increasingly important in recent years, thus medicinal plant cultivation using appropriate planting, management, and planning methods is extremely valuable. Rosa damascena Mill is an useful plant species with industrial-pharmaceutical potential in addition to its ornamental value. Plant nutrition is one of the most crucial aspects of production management. Given that, in order to fulfill the world's rising needs, the usage of chemical fertilizers for plant nourishment is on the rise, resulting in irreversible environmental, health, and economic damages. A study was carried out to see how seaweed extract and mycorrhizal fungus inoculation affected the growth and flowering characteristics of five genotypes of Rosa damascena. A factorial experiment was conducted in the Lavark farm of Isfahan University of Technology in Najafabad city, using a completely randomized design (CRD) with 30 treatments and 3 replications. Foliar application of seaweed extract at three concentrations (zero, 0.25, and 0.5 percent), mycorrhizal fungus (inoculation and non-inoculation), and five genotypes of Rosa damascena (A, B, C, D, and E) were among the treatments. Plant height, leaf area, average number of flowers, average flower weight, chlorophyll, carotenoids, carbohydrates, phosphorus, potassium, zinc, and iron concentrations were all measured. The results showed that, The results showed that inoculation of mycorrhizal fungus had an increasing effect on height, leaf area, frost tolerance, phosphorus, potassium and chlorophyll a and had a declining effect on average number of flowers and average weight of flowers. Foliar treatment of seaweed extract at 0.25 concentration increased leaf surface characteristics and average number of flowers, while application at 0.5 concentration decreased chlorophyll a. Iron was reduced in plants inoculated with mycorrhiza when seaweed extract was applied at a level of 0.5. Five Rosa damascena genotypes differed significantly in quantitative and qualitative characteristics, with genotype A outperforming the others in all vegetative and flowering traits (height, leaf area, number of flowers, and flower weight). Genotype A was the most resistant to spring frost of the five genotypes, whereas genotypes D and E were the most susceptible. The influence of the mycorrhizal fungus reduced tolerance to spring frost stress, the average number of blooms, and the average weight of flowers in all genotypes, with genotype C experiencing the greatest reduction and genotype A and B experiencing the least reduction. With genotypes D and E, mycorrhizal inoculation resulted in the greatest increase in chlorophyll a. The effect of seaweed extract on genotypes B and C increased the average number of flowers and increased the average weight of flowers in genotypes A, B, and C. Height, leaf area, phosphorus, potassium, and zinc all had a positive link, according to correlation coefficients. There was a link between the iron characteristic and the quantity of flowers and the weight of the flowers. Frost characteristic had a negative correlation with height and potassium and a positive correlation with flower quantity, flower weight, and iron element. In general, mycorrhizal fungi-inoculated plants had higher levels of nutrients, chlorophyll, and vegetative growth than non-inoculated plants, whereas the average number and weight of flowers dropped. Application of seaweed extract at a concentration of 0.25 also increased leaf area and average number of flowers. The interaction of seaweed extract with mycorrhizal inoculation had no influence on the vegetative or flowering properties of the plants. In terms of vegetative characteristics, flowering, and spring frost resistance, genotype A was determined as the best genotype among the available genotypes.
