The influence of water deficit on water relations, photosynthesis and fruit growth in Asian pear (Pyrus serotina Rehd.)

1994 ◽  
Vol 60 (1-2) ◽  
pp. 89-99 ◽  
Author(s):  
M.H. Behboudian ◽  
G.S. Lawes ◽  
K.M. Griffiths
HortScience ◽  
1992 ◽  
Vol 27 (6) ◽  
pp. 572f-572
Author(s):  
A. Richard Renquist ◽  
Horst W. Caspari ◽  
David J. Chalmers

Nashi pear (Pyrus serotina Rehder, cv. Hosui) trees were planted in 12 computerized 1m-wide drainage lysimeters in September 1987. During the 1990 season tree water use was monitored via lysimeter and neutron probe readings. Diurnal leaf water relations were studied using a pressure chamber for water potential (ψ) and a porometer for leaf conductance (gs). Xylem sap trunk flow velocities were measured with an experimental heat pulse device and converted to xylem flux. Close agreement existed between 24 hr xylem flux and lysimeter water use when comparing trees with different soil water content. Xylem flux also was very sensitive to changes in evaporative demand. During 9–13 day drying cycles pre-dawn ψ became progressively lower, morning decline more rapid, and afternoon recovery slower. The diurnal gs pattern also shifted during drying cycles, such that gs of water stressed trees always decreased from time of first measurement of sunlit leaves rather than increasing during the morning as on non-stressed trees. Late afternoon was the best time to distinguish between fully irrigated and stressed trees using gs measurements.


2011 ◽  
Vol 59 (3) ◽  
pp. 227-231 ◽  
Author(s):  
Navid Yazdani ◽  
Kazem Arzani ◽  
Younes Mostofi ◽  
Maryam Shekarchi

2017 ◽  
Vol 37 (2) ◽  
pp. 268-276 ◽  
Author(s):  
Robson Mauri ◽  
Rubens D. Coelho ◽  
Eusímio F. Fraga Junior ◽  
Fernando Da S. Barbosa ◽  
Daniel P. V. Leal

2011 ◽  
Vol 3 (1) ◽  
pp. 91-94 ◽  
Author(s):  
Mostafa GHASEMI ◽  
Kazem ARZANI ◽  
Abbas YADOLLAHI ◽  
Shiva GHASEMI ◽  
Saadat SARIKHANI KHORRAMI


2020 ◽  
Vol 19 (1) ◽  
pp. 21-39
Author(s):  
Marta Rokosa ◽  
Małgorzata Mikiciuk

The genus Fragaria belongs to the Rosaceae family. The most popular representatives of this species are the strawberry (Fragaria × ananassa Duch.) and wild strawberry (Fragaria vesca L.), whose taste and health benefits are appreciated by a huge number of consumers. The cultivation of Fragaria plants is widespread around the world, with particular emphasis on the temperate climate zone. Increasingly occurring weather anomalies, including drought phenomena, cause immense losses in crop cultivation. The Fragaria plant species are very sensitive to drought, due to the shallow root system, large leaf area and the high water content of the fruit. There have been many studies on the influence of water deficit on the morphological, biochemical and physiological features of strawberries and wild strawberries. There is a lack of research summarizing the current state of knowledge regarding of specific species response to water stress. The aim of this study was to combine and compare data from many research carried out and indicate the direction of future research aimed at improving the resistance of Fragaria plants species to stress related to drought. These plants show patterns of response to stress caused by drought, such as: osmotic adjustment, reduction of transpiration and photosynthesis, and increased efficiency of water use. Drought also causes significant changes in the composition and palatability of the fruit of the Fragaria plant species.


2013 ◽  
Vol 21 (3) ◽  
pp. 373-380 ◽  
Author(s):  
Jin-Hyeuk Kwon ◽  
Heung-Su Lee ◽  
Si-Lim Choi ◽  
Cho-Yong Cho ◽  
Ok-Hee Choi ◽  
...  

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