Lec10TranspirationAndWaterStress

Wileycomdoi101111j1365 30402007001681xpdf where water

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Unformatted text preview: know that much. Where does water go in the leaf? we dont know. vasicule bunle http://onlinelibrary.wiley.com/doi/10.1111/j.1365-3040.2007.001681.x/pdf Where water goes in the leaf before evaporating is variable between species • Pushing water into the xylem results in rapid stomatal responses for plants with Design 2 and 3 (leaves with bundle sheath extensions BSE’s) indicating that the xylem is connected with the stomata in the liquid • Changing humidity rapidly results in fast stomatal responses for plants with Design 1 showing that lacking BSE’s results in rapid dehydration of stomata Transpiration Transpiration • Volume – The volume of water lost in transpiration can be very high. • It has been estimated that over the growing season, one acre of corn may transpire 400,000 gallons of water. – 1 acre-foot 326,000 US gallons • Therefore: One acre of corn will require 400,000 ÷ 326,000 = 1.23 acrewater Transpiration • Volume – The volume of water lost in transpiration can be very high....
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This document was uploaded on 01/17/2014.

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