Avaliação da biometria de genótipos de milho em três municípios do estado de Alagoas

Abstract

Faced with the need and importance of producing maize varieties (Zea mays) for production on a commercial scale and which satisfies the needs of family farming, the present research aimed to analyze, through experiments, the behavior of different corn genotypes in edaphoclimatic conditions of three municipalities in Alagoas in relation to plant and ear biometry. The experiments were carried out in the municipalities of Paripueira, Rio Largo and São Sebastião. The experimental design was in randomized blocks, with four replications and the plots consisted of four rows. In the plots, the genotypes were contemplated, which were distributed as follows: PV 1 BRANCA, BRANQUINHA, PV 2 VIÇOSENSE, PV 3 MAJESTOSO, JABRA, JABRANQ, JAVI, JANOR and compared with the commercial witness being this Variety POTIGUAR, BRS CAATINGUEIRO and AG 1051. The analyzed variables were: plant height (AP), height of insertion of the first ear (AIPE), tassel length (CP), stem diameter (DC), weight of the ear with straw (PECP), weight of the ear without straw (PESP), length of the ear with straw (CECP), length of the ear without straw (CESP), diameter of the ear with straw (DECP), ear diameter without straw (DESP), number of rows of grains on the ear (NFGE), ear straw (EMPE) and thousand grain weight (PMG). Based on the analysis of the biometric characteristics of the plants in the three municipalities, they demonstrate that the local genotypes, JABRANQ, JAVI, BRANQUINHA and PV1 BRANCA are the most promising, presenting good performance in many characteristics evaluated in the edaphoclimatic conditions of these regions of Alagoas. The controls POTIGUAR, BRS CAATINGUEIRO and AG 1051 presented the lowest results in most of the variables analyzed, for the plant's biometric characteristics. For ear biometry, the control POTIGUAR, and the intervarietal hybrids JAVI and JANOR obtained the best results in the three municipalities of Alagoas. The BRS CAATINGUEIRO Control and the PV2 VIÇOSENSE and PV3 MAJESTOSO cultivars presented the lowest results for ear biometrics in the municipalities evaluated. In the three municipalities in Alagoas, the JAVI intervarietal hybrid stood out, obtaining the best results in plant and ear biometric evaluations.