Morphological data and natural reaction to yellow Sigatoka disease (Mycosphaerella musicola) were collected and compared for specialty banana clones Niño Común, Niño Enano, Manzano and Yamgambii. The Yamgambii clone produced 118 fruits per bunch, compared with 88 for both clones of Niño and 85 for Manzano. Also the average bunch weight of the Yamgambii clone was significantly greater than that of the Niño Común or Niño Enano. The average bunch weight was 10 kg for Yamgambii, 5.8 kg for Niño Común and 4.8 kg for Niño Enano. In the first ratoon crop Yamgambii produced 42% more fruits per bunch than the average production of the other clones. The average bunch weight of Yamgambii was significantly greater (17.2 kg) than that of the other three clones (8 kg). Yamgambii showed the lowest Sigatoka index at six months and at shooting stage. The superiority of Yamgambii was evident in terms of fruit production and natural resistance to yellow Sigatoka.