فهرست مطالب sevda ghasemi germi

Pelleting is done by adding inert adsorbents to change seed size and shape and improve seed yield and plant ability. This present study was conducted to investigate potato minituber pelleting (Agria cultivar) to improve some key potato traits in a randomized complete block design with three replications in the research farm of Mohaghegh Ardabili University in 2018-2019. Experimental treatments included 9 different combinations of Arabic gum or cellulose adhesive, zeolite or cocopeat fillers and chitosan with control treatment (without pellets). The studied traits were leaf number of leaves, fresh yield, dry matter yield of potato tuber, leaf stomatal conductance, tuber carbohydrate content, tuber density and chlorophyll content in leaves. The results showed a significant effect of potato minituber pelleting on traits such as Number of leaves, Fresh and dry matter yield of potato tubers, leaf stomatal conductance, tuber acidity, density and chlorophyll b content. Pelleting of minitubers with Arabic gum + zeolite + chitosan had the highest number of leaves and density of potato tubers it showed an increase of 50.88 and 15.9 percent, respectively to the control treatment. According to the results, the highest fresh yield and dry matter yield of potato tuber were obtained in the treatment of Arabic gum with zeolite, which showed an increase of 47.14 and 39.46 percent, respectively, compared to the control. The highest amount of leaf stomatal conductance was observed in the cellulose adhesive + cocopeat treatment combination, which resulted in a 70.21% increase compared to the control treatment. The highest amount of chlorophyll b in cellulose adhesive + cocopeat + chitosan treatment combination showed an increase of 42.7% respectively, compared to the control treatment. In general, in terms of quantitative traits, application of Arabic gum with zeolite along with chitosan led to the improvement of most morphological, functional and physiological traits.

study aimed to Evaluating the production of potato superolite tubers by applying different pelleting methods based on randomized complete block design with three replications Experimental treatments included 17 different combinations. The results showed, Pelleting of minituber with zeolite and soil soil application of triple superphosphate had the largest diameter of the main stem, compared to the control, it showed anincrease of 29.31 percent, pelleting the tuber with cocopeat and soil application of triple superphosphate had the highest plant fresh weight and plant dry weight, which showed an increase of 33.8% and 29.72%, respectively, compared to the control, the highest number and yield of potato superolite tuber was obtained in T14 treatment with an increase of 29.9 and 33.89% compared to the control, treatment (T1) led to an increase in chlorophyll a, b and total chlorophyll, which compared to the control showed an increase of 21.92, 34.40 and 23.92%, respectively.The highest amount of carotenoids was observed in T13 which had an increase of 18.10% compared to the control treatment. The highest (fv/fm) was in T7 treatment Comparison with control treatment showed an increase of 21.29%.Treatment (T5) had the highest protein yield which had a 52.62% increase compared to the control treatment .In general, the results showed that the application of superabsorbent polymer and chitosan in tuber pelleting had good results in most traits. In addition, the use of zeolite with these compounds led to the improvement of most traits.Also, Potato tuber yield showed positive and significant correlation with most morphological traits.

This study aims at investigating the morpho-physiological responses of potato superelite mini-tubers to different coating treatments factorial experiment, based on randomized complete block design with three replications in Research Farm of Mohaghegh Ardabili University between 2018 and 2019. Experimental factors at four levels include mini-tubers filler (zeolite and cocopeat), superphosphate (soil and pellet application), chitosan, and superabsorbent with control treatment (without pelleting). Application of cocopeat with superphosphate leads to the highest average number of tubers per plant (8.36), fresh and dry tuber yield (18.23 and 3.88 tons per hectare), and biological yield (21.69 tons per hectare). The use of chitosan in mini-tuber pelleting decrease the activity of catalase and peroxidase enzymes (19.67% and 16.37%, respectively), increasing the activity of polyphenol oxidase (37.80%). Zeolite increase and cocopeat decrease the tuber protein percentage, compared to the control. This increase in protein percentage with increasing tuber yield leads to a 32.23% increase in tuber protein yield in zeolite application, compared to control treatment. The use of superphosphate in mini-tuber pelleting also increase the protein percentage, thus leading to a 30.30% increase in protein yield, compared to control mini-tuber. In principal component analysis (PCA), the first component, with which 35% of the changes could be explained, include the yield of protein, lysine, and methionine, and the second component, with which 25% of the changes could be explained, include the protein, methionine, lysine, and total nitrogen. Finally, the results show that the mini-tuber pelleting by superphosphate, zeolite, and superabsorbent have had significant additive effects on yield and quality traits.