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Prof. Hassan Ramadan Ahmed El-Deepah :: Publications:

Title:
EFFECT OF GA3 AND IAA ON GROWTH AND YIELD OF SOME MAIZE VARIETIES
Authors: El-Deep.H.R.A.; Salwau, M.I.M. and Khader, El.S.F.
Year: 1989
Keywords: Not Available
Journal: Not Available
Volume: Not Available
Issue: Not Available
Pages: Not Available
Publisher: Not Available
Local/International: Local
Paper Link: Not Available
Full paper Hassan Ramadan Ahmed El-Deepah_5.pdf
Supplementary materials Not Available
Abstract:

Two field experiments were conducted at the Agricultural Research and Experiment Center, Faculty of Agriculture at l4oshtohor, Kalubia, Egypt, during 1986 and 1987 seasons. The aim of the investigation was to study the response of three maize varieties to soaking their grains in solution of two growth regulators (GA3 and ،AA) at three concentra tiona, i.e. 40, 80 and 120 ppm for 12 hours. S.C. 103 surpassed the other two varieties in plant height, ear diameter, number of grains/row, ear weight. weight of grains/ear, T.W.C. 310 gave higher ear position and higher shelling percentage, but D.C. 202 produced higher number of rows/ear. The three varieties were similar for stem diameter, number of green leaves/plant after 90 days from sowing, ear length, number of grains/ear, number of ears/plant and 100—grain weight. Soaking maize grains in GA3 or ،AA under different concentrations decreased stem diameter and number of green leaves/plant as compared with the control treatment. GA3 at 40 ppm increased plant height and 100—grain weight and gave the lowest grain weight/plant, but ،AA at 120 pp produced the highest values of ear and grain weight/plant. ،AA at 40 ppm decreased number of grains/row as compared with 80 ppm of both ،AA and GA3. Number of rows/ear increased by GA3 at 80 ppm as compared with 40 ppm. The highest number of grains/ear was obtained by GA3 at 80 ppm and the lowest number was produced by ،AA at 40 ppm. Both growth regulators did not affect ear length, ear diameter, ear weight, grain weight/ear, number of ears/plant, shelling percentage, yield of ears and grain/fed. Positive correlation coefficient was obtained between grain yield and each of yield of ear, number of grains/row, number of grains/ear, ear diameter and ear length.

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