Evaluación del enraizamiento de estacas de aliso (alnus jorullensis var) sometidas a un proceso de enfriamiento y utilización de camas frías y calientes.

Abstract

The research had as general objective: to assess the emission of roots in Alder cuttings (Alnus jorullensis Var) subjected to a process of cooling and the use of hot and cold beds, specific objectives were: 1) to determine the effect of temperature on Alder roots emission stakes, 2) compare the effectiveness of the technique of propagation of hot beds opposite cold beds in the generation of roots. The type of research used was the pilot and (DBCA) randomized complete block design was used on bivariatearray with four treatments and four replications (2 x 2 x 4), with a total of 16 experimental units with 50 stakes per experimental unit, applying the Duncan test 5% statistical probability in order to identify the best treatments. During the trial was analyzed the variables: number of stakes plump, green, number of stakes with buds, long and width of sheets, number of stakes with callus formation, number of cuttings with roots, number of roots per stake and length of roots. Treatment temperature of stakes at 1ºC for 14 days (T.E) recorded statistical differences highly significant in terms of number of stakes with outbreaks, length of sheets, number of cuttings with roots, number of roots per stake and length of roots, in relation to the treatment temperature of beds, substrate subjected to 25ºC (T.C) obtained statistical differences significant number of cuttings with roots and number of roots per stake. The mortality of 100% of the stakes to the 90 days, was possibly due to a phytotoxicity caused by resins and tannins contained in the sawdust of pine used as substrate in the experiment. Key words: Alnus jorullensis, cooling, planting, rooting.