TY - JOUR T1 - Effects of Heat Stress on Pollen Viability and Pollen Tube Growth in Pepper AU - , Narges Kafizadeh AU - , Jirair Carapetian AU - , Khosrow Manouchehri Kalantari JO - Research Journal of Biological Sciences VL - 3 IS - 10 SP - 1159 EP - 1162 PY - 2008 DA - 2001/08/19 SN - 1815-8846 DO - rjbsci.2008.1159.1162 UR - https://makhillpublications.co/view-article.php?doi=rjbsci.2008.1159.1162 KW - Heat KW -pollen grain KW -pollen tube KW -pollen viability AB - The effects of heat on pollen grains was studied in pepper (Capsicum annuum L.) under greenhouse conditions using a completely randomized design. Seeds of the California Wander variety were grown in a growth chamber and flowers plucked and placed in 38°C (treatment) and 25°C (check) for a period of 8 h and consequently pollen viability, pollen tube growth and the growth of pollen tube inside the style was studied. Results indicate that pollen viability and pollen tube growth was considerably reduced at 38°C as compared with the check. In addition, pollen tube growth inside the style at 38°C was twisted and they grew in spiral and helical forms. ER -