Adaptability and stability of carioca bean pre-cultivars in Agreste-Sertão Pernambucano

Abstract

Adaptability and stability estimates are used by plant breeding programs to identify cultivars that exhibit predictable behavior and great performance in more than one environment. Thus, the objective of this work was to compare biometric techniques for simultaneous selection of carioca bean pre-cultivars for high adaptability, stability and yield of grains under the conditions of Agreste-Sertão Pernambucano of the Brazil. The trials were conducted in the municipalities of Arcoverde, São João, and Belém de São Francisco. Ten pre-cultivars and four commercial witnesses were used and the randomized complete block design was employed, with three repetitions. Grain yield was evaluated in the period 2014-2015. Variance analyzes were performed and the adaptability and stability were estimated by the techniques of Eberhart & Russell, Lin & Binn modified by Carneiro, and AMMI. The techniques were compared using Spearman’s correlation. No correlation was observed between Eberhart & Russell and Lin & Binns modified. AMMI is the most complete for isolated use. The pre-cultivars CNFC 15460, CNFC 15462, CNFC 15504 and CNFC 15507 contemplate wide adaptability, stability and productivity, and are indicated for Agreste-Sertão of Pernambuco.