Pollen fertility of potatoes (<i>Solanum tuberosum</i> L.) in Tajikistan
Pollen fertility analyzes and crossing of potato clones and varieties (<i>Solanum tuberosum</i> L.) has been carried out in high mountainous area of Tajikistan. Significant variation of pollen fertility among different clones and varieties (62 samples) has been obtained. The potato clones developed by selection of F<sub>1</sub> hybrids of True Potato Seed (TPS) has shown variability in pollen fertility, morphology of stigma column, as well by color of pollen. Ten clones has obtained minimal pollen fertility level (5-9.7%). Such clones can be used as primary genetic material in potato breeding programme as they can be used in direct crossing without emasculation. Among investigated varieties the lower fertility of pollens has been registered in Cardinal variety (26.5%) and the big quantity of pollen fertility observed on potato variety Dusti (95.2%).