MAHMOUD, H., FATHI, M. (1999). IMPROVING GERMINATION OF WALNUT ROOTSTOCK SEEDS TAKEN FROM A PARADOX (JUGLANS HINDS!! X J. REG1A) MOTHER PLANT AND SOME GRAFTING TRIALS. Egyptian Journal of Agricultural Research, 77(3), 1265-1274. doi: 10.21608/ejar.1999.337638
HAMED M. MAHMOUD; MOSTAFA A. FATHI. "IMPROVING GERMINATION OF WALNUT ROOTSTOCK SEEDS TAKEN FROM A PARADOX (JUGLANS HINDS!! X J. REG1A) MOTHER PLANT AND SOME GRAFTING TRIALS". Egyptian Journal of Agricultural Research, 77, 3, 1999, 1265-1274. doi: 10.21608/ejar.1999.337638
MAHMOUD, H., FATHI, M. (1999). 'IMPROVING GERMINATION OF WALNUT ROOTSTOCK SEEDS TAKEN FROM A PARADOX (JUGLANS HINDS!! X J. REG1A) MOTHER PLANT AND SOME GRAFTING TRIALS', Egyptian Journal of Agricultural Research, 77(3), pp. 1265-1274. doi: 10.21608/ejar.1999.337638
MAHMOUD, H., FATHI, M. IMPROVING GERMINATION OF WALNUT ROOTSTOCK SEEDS TAKEN FROM A PARADOX (JUGLANS HINDS!! X J. REG1A) MOTHER PLANT AND SOME GRAFTING TRIALS. Egyptian Journal of Agricultural Research, 1999; 77(3): 1265-1274. doi: 10.21608/ejar.1999.337638
IMPROVING GERMINATION OF WALNUT ROOTSTOCK SEEDS TAKEN FROM A PARADOX (JUGLANS HINDS!! X J. REG1A) MOTHER PLANT AND SOME GRAFTING TRIALS
2Horticultural Research Institute, Agricultural Research Center, Dokki, Giza, Egypt
Abstract
The effect of Gibberellic acid and potassium nitrate at different concentrations on Paradox (Juglans hindsii x J. regia mother plant) walnut seeds germination rate and percentage were investigated. Length, diameter, number of leaflets as well as seedling dry matter were recorded_ Uniform one-year-old seedlings were grafted to find out the best methods and date. Using growth regulators and chemicals followed by tratification increased germination percentage and made the embryo start growth earlier and stronger. Treatments success could be arranged as follows: GA3 at 1000 ppm > GA3 at 500 ppm> KNO3 at 1.0% >KNO3 at 0.5%> distilled water_ Longer soaking period gave better results. Whip-tongue grafting method through November (100-80%) or March (40-80%) gave the highest percent of success as well as the longest grafted plants (772-85.6 cm.) (43.8-80.5 cm.) in the two studied seasons respectively.
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