Abstract

LAMZ PIEDRA, Alexis et al. Evaluation of agro-morphological behavior based on the variability characterization of common bean (Phaseolus vulgaris L.) lines for late sowings. cultrop [online]. 2016, vol.37, n.2, pp. 108-114. ISSN 1819-4087.

Among the main factors affecting bean production is the wrong varietal distribution over diverse environmental conditions under which it is grown. The research work was aimed at evaluating the agro-morphological behavior based on the variability characterization of promising common bean lines for late sowings. Thus, seeding was performed on January 20, 2014, using a randomized block design and four repetitions in “El Mulato” farm, belonging to "Orlando Cuellar" Strengthened Credit and Service Cooperative (SCSC), San José de las Lajas municipality, Mayabeque province. The evaluation was carried out on 14 agro-morphological variables that included phenological and morphological parameters, yield and its components, as well as rust (Uromyces appendiculatus) resistance. Results from analyzing statistical parameters and main components allowed detecting genetic variability among the evaluated lines. It was also detected that pod number per plant and 100-grain weight were the highest correlated variables with yield. In general, six out of the evaluated lines combined a high-yielding potential and from mid to high rust resistant reaction, standing out SCR 15 line, with a greater yield potential than those so far reported in Cuba. This suggests assessing these lines in regional trials for a further generalization-extension of the possible cultivars that contribute to focus an appropriate management of these genotypes and their use as rust resistant sources in bean breeding programs

Keywords : cultivar; genotypes; yield; rust; varieties.

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