01793naa a2200217 a 450000100080000000500110000800800410001910000220006024501530008226000090023552011110024465000110135565300220136670000180138870000200140670000200142670000200144670000220146670000170148877300700150519193032013-10-10       2011    bl uuuu     u00u1 u    #d1 aPESTANA, R. K. N.  aGenetic dissimilarity of putative gamma-ray-induced 'Preciosa - AAAB-Pome type' banana (Musa sp) mutants based on multivariate statistical analysis.  c2011  aBananas are among the most important fruit crops worldwide, being cultivated in more than 120 countries, mainly by small-scale producers. However, short-stature high-yielding bananas presenting good agronomic characteristics are hard to find. Consequently, wind continues to damage a great number of plantations each year, leading to lodging of plants and bunch loss. Development of new cultivars through conventional genetic breeding methods is hindered by female sterility and the low number of seeds. Mutation induction seems to have great potential for the development of new cultivars. We evaluated genetic dissimilarity among putative 'Preciosa' banana mutants generated by gamma-ray irradiation, using morphoagronomic characteristics and ISSR markers. The genetic distances between the putative 'Preciosa' mutants varied from 0.21 to 0.66, with a cophenetic correlation coefficient of 0.8064. We found good variability after irradiation of 'Preciosa' bananas; this procedure could be useful for banana breeding progams aimed at developing short-stature varieties with good agronomic characteristics.  aBanana  aGenetic molecular1 aAMORIM, E. P.1 aFERREIRA, C. F.1 aV. B. O. AMORIM1 aOLIVEIRA, L. S.1 aLEDO, C. A. da S.1 aSILVA, S. O.  tGenetics and Molecular Researchgv. 10, n. 4, p. 3976-3986, 2011.