STABILITY AND ADAPTABILITY OF CASHEW TREES CLONES FOR VEGETATION AND YIELD CHARACTERISTICS
DOI:
https://doi.org/10.29247/2358-260X.2019v6i1.p55-67Abstract
The cashew tree is a fruit with high economic and social importance for the region of northeastern Brazil, because, in addition to employ a large number of people, participate expressively in the generation of foreign exchange. However in the genetic improvement of the species the presence of interaction genotype versus environment makes necessary the evaluation of adaptability and stability, for the selection. Therefore the objective of this work was to evaluate by AMMI new clones of cashew-early dwarf. The experimental design was in randomized blocks, 15 treatments, four replicates, four plants per plot. Were evaluated: plant height (ALP), canopy diameter (DIC) and productivity of nuts per plant (PCP). The results obtained were that G13 in ALP; G10 in DIC; and G3 for PCP, showed the highest average values; the more stable clones were G4 and G7 for ALP; G8, G11 and G15 for DIC and; G1 and G14 for PCP, a distinct behavior has been observed only in DIC in the AMMI2 model; in the adaptive specificity in AMMI1 the best were G10 and G11 for ALP; G13 in DIC and; G2, G7 and G10 for PCP; in the AMMI model2 the clones G10 and G11 for ALP, have been adapted to the seventh year of agriculture; G5, G7 and G11 with the fourth year; to fifth year the G2, G10 and G13 in PCP, there were none for DIC and; those years were the principal constituents of variation, responsible in generating the differences of phenotypic expression of clones.
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