02093naa a2200205 a 450000100080000000500110000800800410001910000170006024500410007726000090011830000120012750000740013952015440021365000130175765000140177065000170178465300260180170000220182777300380184916446071995-07-17       1994    bl uuuu     u00u1 u    #d1 aSHEPHERD, K.  aBanana genetic improvement in Brazil  c1994  ap.33-34  aIn: Meeting of the Musa Breedres Network, 1, 1994, La Lima, Honduras.  aPerhaps the greatest of banana growing in Brazil is the lack of productive commercial varieties, with convenient stature to the major diseases and pests, that satisfy the vast majority of Brazilian consumers, be these on the farm or in the cities. Besides losses from Fusarium wilt, Sigatoka/yellow Sigatoka, nematodes, weevil borers and, in some areas, Moko, there now exists the threat from black leaf streak/black Sigatoka, already present in neighboring countries. Moko is at present restricted to the North Region, but would cause enormous damage if it should spread more generally. Until nows, scarcely any cultivar is known tobe resistant. Moreover, few of the currently planted cultivars are expected to have any effective resistance to black leaf/Sigatoka. Thevarietal improvement project led by EMBRAPA/CNPMF aims to produce resistant genotypes and has the following priorities: 1. Continue the work of selection for disease and pest resistance. 2. Seek a steady improvement in agronomic characters, including lower stature, to promote greater productivity in the tetraploid hybrids generated. 3. Initiate or support studies on the genetic variability of the Moko pathogen, pseudomonas solanacearum race 2, in the Amazon basin, in combination wint a search for resistance sources at the diploid level. 4. Initiate or suport research on fertilizantion of banana ovules in vitro, with appropriate histological studies as a guide, in the hope of greaty increasing the seed productivity of some parthenocarpic banana types, particula  aFusarium  aIndução  aResistência  aMelhoramento genetico1 aSILVA, S. de O. e  tMontpellier, France: INIBAP, 1994