EFFECT OF PLANTING ZONE ON PATTERN OF ANNA APPLE FLORAL BUD DORMANCY IN EGYPT | ||
| Journal of Plant Production | ||
| Article 26, Volume 28, Issue 2, February 2003, Pages 1291-1299 PDF (6.06 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/jpp.2003.245528 | ||
| Authors | ||
| R. G. Stino,1; Eman S. Attala2 | ||
| 1Faculty of Agric, Cairo University | ||
| 2Hort. Res. Institute, A.R.C., Giza | ||
| Abstract | ||
| Resulls of forcing laterat florat appte buds taken from three distinct zones of Egypt i.e. North Delta (N.D.), South Delta (S.D.). and West Delta (W.O.) CIt various dates of autumn and winter of both 1998 - 1999 & 1999 - 2000 seasons in a forcing chamber at 25 ± 2 were discussed. Accumutated chilling units (CU) and G.O.D. were computed till various dates of study. No deep end - dormancy that can be broken with accumulated chilling could be detected in the three zones. However. it was noticed in Ihe three zones in tn.,. first season and (N.D.) in the second, :hat buds were dormant during this period and accumulaled chitling was lower than the previously determined to break endo - dormancy. this case of dormancy might be related 10 incomplete formation of the essential organs in the flowers, which was completed afterwards in response to accumulated G.D.D. Buds weight and total carbohydrates increased during dormancy period. However ,buds dormancy in the field is mainly caused by other types as paradormancy or ecodormancy. | ||
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