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Protocols for Micropropagation of Woody Trees and Fruits

Protocols for Micropropagation of Woody Trees and Fruits

Protocols for Micropropagation of Woody Trees and Fruits

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MICROPROPAGATION OF BLACK LOCUST 195<br />

Figure 1. <strong>Micropropagation</strong> <strong>of</strong> black locust (Robinia pseudoaoacia L.). (A) Mother plants<br />

with 35 year age. (B) Explant on initiation medium. (C) Sprouting <strong>of</strong> axillary bud. (D) Shoot<br />

elongation <strong>and</strong> multiplication. (E) Rooting culture. (F) Plant in nutritious plate plug, five weeks<br />

after transplantation. Courtesy <strong>of</strong> Pr<strong>of</strong>essor Xia<strong>of</strong>ang Luo.<br />

The pH <strong>of</strong> the medium was adjusted to 5.8 using 1M NaOH or HCl. Agar gel<br />

strength was 1200 g/cm 2 . The agar was dissolved by heating in a microwave oven<br />

(2 min <strong>for</strong> each 250 ml media in a 1000-W microwave oven) <strong>and</strong> 10 ml was dispensed<br />

in each glass tube (25 × 12.5 mm) <strong>for</strong> initiation culture <strong>and</strong> 40 ml into each culture<br />

vessel (250 cm 3 in size) <strong>for</strong> subcultures, respectively. The glass tubes or vessels were<br />

2<br />

sealed with whorl plastic cover, marked <strong>and</strong> autoclaved at 121° C (1.05 kg/cm ) <strong>for</strong> 20 min.

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