Effect of High Temperature Stress on Pollen Grains in Sunflower (Helianthus annuus L.) Inbred Lines
Momna Mehmood, Rizwana Qamar, Faiz Ahmad Joyia
Abstract
HIGHLIGHTS Pollen grains of ten sunflower inbred lines were evaluated under normal and high temperature stress conditions. Two temperature treatments and three treatment times were used as factors Pollen viability, pollen germination percentage and pollen tube length decreased with increasing temperature and time period. RL-86 and ORI-73 showed excellent ability to withstand high temperature stress.
Topics & Concepts
PollenSunflowerHelianthus annuusGerminationPollen tubeHorticultureInbred strainBiologyBotanyAgronomyPollinationGeneBiochemistrySunflower and Safflower CultivationFlowering Plant Growth and CultivationSoybean genetics and cultivation