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ISHS Acta Horticulturae 555: II International Symposium on Edible Alliaceae

GENETIC AND ENVIRONMENTAL EFFECTS INFLUENCING BRANCHING IN GARLIC (Allium sativum L.)

Author:   J.A. Portela
DOI:   10.17660/ActaHortic.2001.555.26
Abstract:
Branching in garlic is a physiological process affecting quality bulb due to product deterioration. Branched plants produce rough bulbs with an extremely high number of small cloves. It is well known that the thermal conditions before and after planting, day length, high availability of water and nitrogen, and sparse plantations are factors involved in branching expression. Because of thermal conditions and photoperiod are the main factors that affect process induction, it was postulated that branching could be a well indicator of adaptation of the genotype to the environment in Argentina. In this work, it was established not only do cultivars vary the incidence and intensity of branching expression, but also the time when they reach the maximum value in the white garlic type (soft-neck garlic). Delayed planting dates, which sum fewer units of heat from planting to harvest, make branching intensity vary in such a way that the earlier the planting dates are, the lower the intensity of the process is. This means that there should be a physiological stage for the effective reception of the environmental signal in the white garlic type.
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