Khavaran Cultivar and 397009-8 Clone Suitable Genotypes for Autumn Potato Planting in Khuzestan Province

A field experiment was carried out to compare the yield and agronomical characteristics of new potato genotypes in autumn planting in Khuzestan province. This research was conducted in randomized complete block design including seven genotypes: four potato clones and three cultivars (Savalan, Khavaran and Sante) with three replications in farm of Behbahan and Ramhormoz regions for one year (2014-15). Planting date was early October. One week before harvesting haulms was defoliated. Tubers were harvested at late February. The differences of stem number per plant, mean tuber weight and total yield was not significant between two regions. The effect of genotype on duration period between planting date and seedling 50% and 90% emergence was not significant. The marketable yield of Behbahan region (26.89 t. ha-1) was signifacantly higher than Ramhormaz region (22.53 t. ha-1) at 5% probability level. 397009-8 clone produced the highest mean stem number per plant (3.83 numbers) and mean tuber number per plant (9 numbers). The maximum total yield (32 t. ha-1), marketable yield (30.17 t. ha-1) and mean tuber weight (86.94 gr) belong to Khavaran cultivar. The highest tuber dry matter percentage (22.59%) was recorded for 396151-15 clone. According to results, planting of Khavaran cultivar and 397009-8 clone were recommended for autumn potato planting in Khouzestan province.