Evaluation of growth parameters of both Dog Ridge, Salt Creek rootstocks and shoot tip micro-grafting of Superoir and Thompson seedless cultivars through in vitro culture [electronic resource].

Includes reference.

This investigation was carried out to establish a suitable growth media for two grape rootstocks namely, Salt Creek and Dog Rige and to evaluate micrografting of Thompson seedless and superior cultivars on these stocks through in vitro culture. Plant height, leaves and shoot number increased with increasing the concentrations of 2ip from 3 to 7uM. Different concentrations of BAP and GA₃ showed that rootstock responded higher height than concentration of BAP only, except 4 uM BAP associated with Dogridge which had significant effect than all combinations. On the other hand, Salt Creek grown in media supplemented with (0.5 uM IBA) had the lowest root length. Micrografting of Thompson seedless and Superior cultivars were evaluated using two methods of micro-grafting (shoot-tip and cleft) under in vitro conditions on the studied rootstocks. Shoot-tips had higher successful (take) of graft union compared to cleft method which failed to introduce any successful plantlet. Micrografting derived from shoot-tip explants of the two grapevine cultivars showed satisfactory growth characteristics (plantlet height, leaf number and shoot number).

Summary in Arabic.

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