عنوان مقاله [English]
نویسندگان [English]چکیده [English]
In order to investigate the impact of different substrate compositions of planting bed on increasing density and weight of the potato cultivars mini-tuber an experiment was carried out in greenhouse with factorial arrangement based on the completely randomized design. Factor A with three levels was included three potato cultivars (Agria, Spirit and Satina) and Factor B including fourteen planting beds (1, 2, 3, …, 12, 13 and 14), respectively. Based on the results obtained, between the different planting beds in view of the mini-tuber production, there was a significant difference so that the maximum rate of the mini-tuber production related to the pure Vermi-compost planting bed substrate (6) that there was a significant effect on the growth, development and production of mini-tuber of potato cultivars in all three mentioned cultivars. There were also similar effects from 12, 5, 11, 14, 9 and 13 planting beds so that the various planting beds were different with other planting beds in terms of impact on the number of mini-tuber per plant. For the fresh weight and the average diameter of the mini-tuber planting beds number 6 and 12, respectively created the most significant difference compared to the other studied treatments. The chlorophyll index was also the highest on the planting bed no 6. For main effects of cultivar, the Spirit cultivar showed the most amounts of mini-tubers and in same characters was joint with Agria cultivar in same group but had a significant difference with Satina cultivar.