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Rooting capacity of varieties of loquat

This work aimed to study the rooting capacity of five varieties of loquat (Eriobotrya japonica Lindl.), Champagne, Precoce de Itaquera, Mizuho, Mogui and Tanaka. Plants of 20 years of age were submitted to severely pruning. After budding apical softwood cuttings were taken and treated (5 seconds) with concentrations of indolbutiric acid (IBA) (0, 1000, 3000, 5000 and 7000 mg.L-1). The cuttings were placed in drilled box supplied with vermiculite under intermitent mist inside a lathhouse belonging to UNESP/FCAV (21º15'22" S e 48º18'58" W). The experimental design used was the complete randomized, factorial scheme 5x5 (5 epecies and 5 IBA concentrations), four repetitions with 10 cuttings per plot. The evaluations were made after 90 days. The results indicated an increment of rooting and number of roots with the increase of concentration of IBA, except for the variety Mogui that just presented better results for the length of roots. The cuttings presented high survival (90%), with conditions to be planted in the field after the sixth month (from the cutting) or be grafted in the eighth month.

Eriobotrya japonica; vegetative propagation; cutting; adventicious rooting; IBA

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