CHARACTERIZATION AND BOTANICAL CLASSIFICATION OF TWENTY-TWO PEANUT LINES (Arachis hypogaea L.) EVALUATED IN ÑUBLE PROVINCE, CHILE
Nelson Zapata1*, Luis Henriquez1, y Víctor L. Finot1
There are no improved peanut cultivars (Arachis hypogaea L.) in Chile. Therefore, genotypes need to be evaluated in order to develop commercial varieties adapted to local conditions. The objective of this study was to characterize and classify twenty-two advanced peanut lines according to their botanical and commercial variety, and adaptability in Ñuble Province, Chile. Twenty-three morphological descriptors (17 quantitative and 6 qualitative) were evaluated, and data were analyzed by uni- and multivariate analyses. The results allowed classifying the lines into subspecies hypogaea var. hypogaea and fastigiata var. fastigiata. The former was divided in two subgroups: one consisting of lines 4, 15, 17, 18, 41, 42 (type Runner), and the other consisting of lines 3 and 8 (type Virginia). Subsp. fastigiata var. fastigiata included lines 1, 5, 7, 10, 11, 12, 13, 14, 16, 19, 20, 21, 22, 23 (type Valencia). Subsp. hypogaea has decumbent growing, alternate branching and fruits with two brown seeds. Subsp. fastigiata has erect growing, sequential branching and fruits with three red seeds. Lines 3, 18 and 20 showed better adaptability to local conditions in Ñuble Province, Chile.
Key words: Arachis hypogaea, peanut type Valencia, peanut type Runner, peanut type Virginia.
1 Facultad de Agronomía, Universidad de Concepción, Casilla 537, Chillán, Chile.
*Autor para correspondencia: E-mail: firstname.lastname@example.org.