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To wilt or not to wilt
Date:5/14/2014

variation in this trait that has been observed between cultivars. In his thesis, Habtamu Giday presents two independent possibilities for stimulating stomatal responsiveness at high relative humidity conditions without pitfalls.

The first alternative is to graft onto the rootstock of genotypes with increased levels of abscisic acid at high relative humidity. I found that this can reverse the condition and restore stomatal functionality, explains Habtamu Giday.

The other possibility is to water the plants less, in accordance with how much water they evaporate.

We have shown that when plants are irrigated by half the irrigation amount compared to evapotranspiration they show considerably improved stomatal responsiveness without any yield penalty. A further decrease to one quarter of evapotranspiration completely restores stomatal functionality although this improvement comes at a cost of yield loss, says Habtamu Giday.


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Contact: Habtamu Giday Gebraegziabher
habtamu.giday@agrsci.dk
Aarhus University
Source:Eurekalert  

Page: 1 2 3

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