Cheng Ming et al., [6] reported that pollen viability and seed numbers in fruits were evaluated in 938 unit branches of 74 trees of Citrus grandis [C. maxima] cv. Shatian treated with 60Co, fast neutrons and lasers. Eight few-seed fruited branches (counting between 20.1 and 40.0 seeds per fruit) and twelve fewer-seed branches (less than 20 seeds/fruit) were obtained. The same work reported that laser and 60Co treatments are more effective at inducing few or fewer seeded fruits and increase the occurrence of pollen abortion patterns (abortion rate >45%) than neutrons.