Vol. 70 No: 1

Title:
In Vitro Rooting of Rootstock GF-677 (Prunus Amygdalus × P. Persica) as Influenced by Mineral Concentration of the Nutrient Medium and Type of Culture-Tube Sealing Material

Author:
K. DIMASSI-THERIOU

pp: 105-108

Abstract:
Rooting of the rootstock GF-677 (Prunus amygdalus × P. persica) in vitro was significantly affected by the mineral concentration of the nutrient medium and by the type of tube sealing material (rubber and parafilm). The results showed that increasing the mineral concentration of the WPM from half (0.5×) to twice the normal (2×) resulted in a significant increase of percent rooting, number, mean length and fresh weight of roots. However, when the MS substrate was employed, number and mean length of roots were greater at 1× and 0.5× mineral concentration, respectively. In both media fresh weight of roots was increased by increasing the mineral concentration and the MS medium responded better than WPM at the low mineral concentration. Rubber capping proved superior to parafilm with respect to rooting percentage, number and root fresh weight. Mean root length, however, declined with rubber as capping material.

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