OPTIMAL ENVIRONMENT FOR SET AND DEVELOPMENT OF SWEET PEPPER FRUIT
Low night temperatures at the flower-opening stage reduce pollen viability but promote the formation of parthenocarpic seedless fruits or seed-deficient fruits.
High correlation between fruit size and the number of seeds was found in fruits under high and low night temperatures. High (20°C) temperature during flower development i a prerequisite for the formation of good-shaped elongeated fruit. The highest length/diameter ratio in both fertilized and non-fertilized fruit was obtained with a high night temperature up to anthesis and a low temperature (8–10°C) there after.