SciELO - Scientific Electronic Library Online

 
vol.28 número2MÉTODOS DE INTERPOLAÇÃO PARA ESTIMAR O pH EM SOLO SOB DOIS MANEJOS DE CAFÉ ARÁBICACALIDAD DE LOS TOMATES PRODUCIDOS EN CONDICIONES DE AMBIENTE PROTEGIDO Y ABIERTAS índice de autoresíndice de materiabúsqueda de artículos
Home Pagelista alfabética de revistas  

Servicios Personalizados

Revista

Articulo

Indicadores

Links relacionados

Compartir


Idesia (Arica)

versión On-line ISSN 0718-3429

Resumen

ROMANO, Amalia S; TEVES, I  y  CAZON, L. BEHAVIOUR OFMECHANICALLY DAMAGED SEEDS ON THE DEVELOPMENT AND YIELD OF NORMAL AND ABNORMAL BEAN (PHASEOLUS VULGARIS L.) PLANTS. Idesia [online]. 2010, vol.28, n.2, pp.67-74. ISSN 0718-3429.  http://dx.doi.org/10.4067/S0718-34292010000200008.

Mechanical damage is a factor determining deterioration of seed. This research was aimed at analyzing its incidence on the development and yield of normal and abnormal plants of two bean cultivars. For this purpose, sublots of seeds of the white bean Paloma INTA and the black one Camilo INTA were damaged by letting them fall on a metallic plate: none, two, and four times, from a two meter height. Germination percentages, vigour index of normal and abnormal seedling, as well as their arrival into the phases R6 (flowering), R7 (pods formation) and R9 (maturity at harvest), number of pods and seeds/plant, seeds/pod, length of pods, weight of 1.000 seeds, were assessed; finally, a harvest index was calculated. Germination percentage showed decreases -although not significant - only in the case of normal black bean plants with four falls; whereas the vigour index showed significant decreases as compared with normal of all white bean treatments. This was also the case for the Camilo cultivar with four falls. Regarding the length of reproductive phases, normal plants of white bean, from the two and four falls treatments, and abnormal plants from the four falls advanced the R6, R7 and R9 phases; whereas the corresponding black bean abnormal ones advanced only the R6 and R9 phases. Besides, the normal plants of this cultivar with two falls and abnormal ones of the control lot showed delays in their arrivals to phases R6 and R7, as compared with their controls. When the final productivity was analyzed, it was noticed that -whereas the abnormal white bean plants from the two falls treatment showed significant (p ≤ 0.05) decreases in the number of pods and that of seeds/plant- both components of yield increased by 19 to 37% respectively in the case of black bean control plants; and in lower proportion for the two falls treatment in each case, as compared with their respective normal plants. Regarding the harvest index, it showed increases up to 65% for abnormal plants as compared with normal ones of the control and two falls of white bean; and for the four falls treatment of black bean a 13% increase was observed . These results -although showing Paloma as the most sensitive one to mechanical damage, in relation to behaviour similitudes observed facing the yield of both types of plants analyzed (normal/abnormal) - would indicate the existence of some association of the abnormal plants, with compensatory effects.

Palabras clave : mechanical damage; bean; development; yield; normal plant; abnormal plant.

        · resumen en Español     · texto en Español     · Español ( pdf )

 

Creative Commons License Todo el contenido de esta revista, excepto dónde está identificado, está bajo una Licencia Creative Commons