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- W2141822437 abstract "Two field experiments were carried out on jackfruit plants (Artocarpus heterophyllus lam.) under Giza governorate conditions during 2004/2005 and 2005/2006 seasons and took some observations until 2007 year. The first one aimed to the seedlings production to use as a rootstock or an selected trees in the future for further evaluations, the seedlings produced by using either the intact seeds or the decoated seeds (without outer leathery coat) treated by some chemical treatments (GA 3 at 0.5 ppm for 12 hrs. or 10 ppm for 10 minutes and kinetin at 10 ppm for 6 hrs. or 100 ppm for 5 minutes); and some physical treatments (soaking in the tap water for 12 or 24 hrs, growing under the shade of mango, red cellophane sheets and the sunlight (control)), as an individual or mixed treatments. The second experiment aimed to the possibility of using the top-cleft and saddle grafting methods to benefit of the characters of the grafting in propagating the jackfruit, the apical growth of the current shoots of the old trees in Egypt that native to kapa jackfruit or the apical growth of the seedlings produced in this trial used as a sources of the scions, make the girdling under the graft union and covering the scion and the graft union with transparent or black polyethylene bags or without cover. Also, the histological study have done on the graft union region to detect the anatomical reasons of the compatibility or incompatibility between the scion and the rootstock and correlated with the morphological results. The results revealed that the differences between the seasons, in all cases were insignificant. Treatment of soaking in tap water for 12 hrs. + 10 ppm GA 3 for 10 minutes + 100 ppm kinetin for 7 minutes + shade of mango hasten the germination and gave the higher germination percentages in the general average (75.6%), in average of the intact seed (66.1%) and in average of the decoated seed (85.1%) compared to the control (25.1%), also, the seed germination % increased by increasing the time after the sowing date. On the other hand, the seedlings grown under the red cellophane sheets achieved the highest percentage of the seedlings with deeply lobed leaves (56.5%), the highest significant survival seedlings (61.7%) and the height (29.6 cm), but they recorded the least significant stem thickness (2.9 mm); the seedlings grown under the shade conditions recorded the highest significant number of leaves / seedling (5.7) and the leaf area (7.6 cm 2 ), while, the seedlings grown under the sunlight (control) had the highest significant stem thickness (4.9 mm). The seedlings age of 6 months had the higher significant height of the vegetative growth (23 cm) and the stem thickness (4.3 mm), but the seedlings age of 3 months had the highest significant survival seedlings (51.8%). It seems to be that the seed germination and the seedling's growth were significantly affected by the light conditions, where they enhanced and hastened under the shade of mango and the red cellophane sheets. Considering the grafting, data showed that the rootstocks at age of 9 months achieved the higher significant grafting success (37.5%), the time required for obtaining the maximum scion bud sprouting (35.8 day), number of the sprouted buds/scion (1.7), length of the new shoots (2.9 cm), number of the leaves/scion (4.6) and length of the scion (12.5 cm). The treatment of using the top-cleft grafting, the seedlings as a source of the scions, the girdling under the graft union region and the black polyethylene bags as a cover for the graft union area, recorded the higher significant success grafts (75%), number of the sprouted buds/scion (3.6), length of the new shoots (6.6 cm), number of the leaves/scion (8.2) and length of the scion (16.6 cm) and it gave the least significant time required for obtaining the maximum scion bud sprouting (22.5 day). The histological studies illustrated that the anatomical features were varied according to the grafting types and the compatibility between the scions and the rootstocks that correlated with the grafting success percentage. Also, the latex resinous materials secreted by the s ecratory canals of the scion and the rootstock, were acted as an adhesive materials Cement between the scion and the rootstock. It is recommended by staying the ties of grafting union region until beginning the growth of scion and thickened the rootstock's bark under the grafting union region. The transverse sections of the success top -cleft grafting were devoid of the collapsed cells, the necrotic layers and the separation zones on the whole grafting margins; forming an" @default.
- W2141822437 created "2016-06-24" @default.
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- W2141822437 date "2008-01-01" @default.
- W2141822437 modified "2023-09-27" @default.
- W2141822437 title "Using the Grafting for Propagation of the Jackfruit and Producing the Rootstocks for the Grafting" @default.
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