Identification of difficult-to-root cuttings for some varieties of vegetable crops ,fruit trees and ornamental . | ||
| Euphrates Journal of Agriculture Science | ||
| Article 1, Volume 6, Issue 4, December 2014, Pages 14-22 | ||
| Abstract | ||
| Abstract : Experiment was performed in the laboratories of Faculty of Science / University of Babylon, to diagnose the difficulty of rooting response in some varieties of vegetable crops, fruit trees and ornamentals. The results were revealded that vegetable crops are easy -to- root with variation in rooting percentage, so the highest rooting response was represented by pumpkin squash and the lower was represented by Watermelon. On the other hand fruit trees and ornamentals can be divided into three groups according to their easy or difficult to rooting response: 1-) Easy -to-root cuttings in presence or absence of auxin, such as Mours 2)- Easy –to –root cuttings in presence of auxin (100%) and to half of that (50% ) in the absence of auxin such as pink Oleander. 3) - Difficult-to-root cuttings are divided into two groups : A)-Absolute-difficulty-to-root cuttings even in case of supplying auxin such as orange and Pear. B)- difficult-to –root cuttings at rate of 25% in absence of auxin and 37% in presence of auxin such as White oleander. Consequently , the difficulty – to -root cuttings might be attributed to the presence of inhibitors as cutting exudates. To verity this suggestion, Onion bioassay was employed in terms of adventitious root formation , because it was easy and quick method. Keywords : boron ,darkness, difficult-to-root cuttings,easy-to-root cuttings ,fruit trees,light,ornamentals, rooting response ,vegetables | ||
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