EI-Banna,, E., EL-Morsy, A., Mohamed, M. (2006). IMPACT OF POTATO SEEDS TREATING BY GA3 AND IAA ON GROWTH, TUBER COMPONENTS AND YIELD. Journal of Plant Production, 31(6), 3869-3879. doi: 10.21608/jpp.2006.236068
E. N. EI-Banna,; A. H. EL-Morsy; M. R. Mohamed. "IMPACT OF POTATO SEEDS TREATING BY GA3 AND IAA ON GROWTH, TUBER COMPONENTS AND YIELD". Journal of Plant Production, 31, 6, 2006, 3869-3879. doi: 10.21608/jpp.2006.236068
EI-Banna,, E., EL-Morsy, A., Mohamed, M. (2006). 'IMPACT OF POTATO SEEDS TREATING BY GA3 AND IAA ON GROWTH, TUBER COMPONENTS AND YIELD', Journal of Plant Production, 31(6), pp. 3869-3879. doi: 10.21608/jpp.2006.236068
EI-Banna,, E., EL-Morsy, A., Mohamed, M. IMPACT OF POTATO SEEDS TREATING BY GA3 AND IAA ON GROWTH, TUBER COMPONENTS AND YIELD. Journal of Plant Production, 2006; 31(6): 3869-3879. doi: 10.21608/jpp.2006.236068
IMPACT OF POTATO SEEDS TREATING BY GA3 AND IAA ON GROWTH, TUBER COMPONENTS AND YIELD
1• Potato and Vegetatively Propagated Veg. Dept.; Hort. Res. Inst.; Agric., Res. Center, Giza, Egypt.
2Plant Nutrition Dept.; Soil, Water and Environ; Res. Inst.; Agric., Res. Center, Giza, Egypt.
Abstract
Two field experiments were carried out during the summer seasons of 2005 and 2006 on potato cv. ( Spunta) in clayey loamy soil at EI-Baramoon Res .Station, Mansoura, Dakahlia Governorate, Egypt to study the effect of soaking the imported potato seed tubers in growth regulators i.e GA3 and IJ.A and their combinations at different concentrations on vegetative growth parameters, tubers yield and its components, tubers quality and some chemical contents of potato tubers.
The results showed that soaking application of seed tubers in mixture of (GA3 + IAA) at concentrations of (5+3 ppmrL for 10 minutes before planting was very effective on the plant stand (%) at 21 and 28 DAP. The plant height (cm),number of main stems / plant, fresh weight offoliagelplant (g) and dry weight of foliage (%) at 90 DAP were increased significantly compared with control and the other treatments in both seasons. The medium tubers size percentage (35 - 65 inrn) ,number of tubers/plant and total tubers yield of the 2 nd season (tons/fed), as well as dry matter ( % ) , starch(%) , N, P and K contents in tubers at harvest were also significantly increased. Small tubers size percentage (>35 mm) , total tubers yield of the 1s1 season, specific gravity and the micronutrients concentration in tubers (Fe, Zn and Mn) at harvest were not affected significantly by different treatments during the study seasons of 2005 and 2006 .
Results revealed that soakin!! application of seeds tubers in mixture of (GA3 + IAA) at concentrations of (5+3 ppm)' for 10 minutes before planting led to increase of vegetative growth parameters, improvement of tubers quality and tubers yield and its components in compared with the control and the other treatments . Applying this treatment may help in solving the late sprouting problem of seed tubers in the decreased soil of relative humidity by soaking the seeds in the previous treatment and planting its immediately, in addition to produce more yield of medium tubers size which are used as seeds for the following seasons (fall, winter and summer) .
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