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Physiological Response of Eggplants Grown Under Different
Irrigation Regimes to Antitransplant Treatments
HSameera O. Bafeel1 and Ansary E. Moftah2
1College of Science, King Abdulaziz Univ. Jeddah
2College of Agric. and Vet. Med. Qassim Univ.
E.mail: sameera12@yahoo.com
Abstract
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Eggplants were grown under four irrigation regimes relevant to 100, 80,
60 or 40% of evapotranspiration (ET) values and treated with
film-forming "vapor gard" or reflcetive-typy "white wash" anti-transpirants
(ATs) in order to examine there effects on different physiological
parameters, growth, transpiration, relative water content (RWC), total
carbohydrates, water use efficiency (WUE) and yield. Results revealed
that all growth parameters, chemical constituents and yield were
strongly influenced by both irrigation regimes and ATs treatments. The
irrigation regimes corresponding to 100% of ET alone or 80% of ET with
ATs treatments gave the greatest effect on plant growth parameters,
while high water stress treatments adversely affected the growth
parameters. The ATs treatments particularly whitewash (WW) had favorable
affect on the growth parameters under all levels of irrigation, but this
effect was more obvious at lower levels of irrigation. Antitranspirant
treatments reduced the transpiration rate, RWC, and carbohydrates were
decreased by decreasing irrigation levels but ATs treatments had
relieving effects of water stress and increased them. Both types of ATs
increased the yield more than the control.
Key words: water stress, antitranspirants, eggplant, growth,
water relations.
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