Figure 3. Percent radiation interception as a function of time expressed as days after sowing (DAS) for resistant (R) and susceptible (S) isohybrids under V. dahliae natural infections. Standard error (SE) was 1.8 and 3.6% for 89 and 102 days after sowing (DAS), respectively. Data are means of isohybrid 2A and 4B. Flowering took place at 70 DAS and physiological maturity at approximately 105 DAS. Data from Trial 2.