Growth, gas exchange, and nutrient status in pepper (Capsicum annuum L.) grown in recirculating nutrient solution as affected by salinity imposed to half of the root system

2005 ◽  
Vol 106 (2) ◽  
pp. 147-161 ◽  
Author(s):  
I.H. Lycoskoufis ◽  
D. Savvas ◽  
G. Mavrogianopoulos
2013 ◽  
Vol 33 (1) ◽  
pp. 73-80 ◽  
Author(s):  
Tomasz J. Nowak

The Wrocław version of hydroponic culture was applied. The content of particular microelements (Cu, B, Mn, Mo, Zn) or several of them jointly was increased ten times (to 6 mg/l) as compared to the standard composition of the nutrient solution. It was found that the yield of fruits and of capsaicin per plant was significantly higher with 10 times increased content of Cu and B or Cu+B+Mo or Cu+Mn+Mo or B+Mn+Mo. Moreover, Cu and Mn applied alone or in combinations with other microelements in 10-fold increased proportion caused a marked increase of capsaicin content in the dry matter of the fruit. It is suggested that the proportions of microelements should be chosen individually for each plant species and for each type of agroclimatic conditions


1999 ◽  
Vol 36 (3) ◽  
pp. 441-449 ◽  
Author(s):  
L. Aguilera-Gomez ◽  
F.T. Davies ◽  
V. Olalde-Portugal ◽  
S.A. Duray ◽  
L. Phavaphutanon

2000 ◽  
Vol 40 (3) ◽  
pp. 457 ◽  
Author(s):  
J. Bower ◽  
B. D. Patterson ◽  
J. J. Jobling

The internal oxygen concentration and rate of oxygen consumption of detached capsicum fruits (Capsicum annuum L.) were monitored over several days. From this their overall permeance to oxygen was calculated. When wax was applied to the pedicel and its scar, permeance was reduced by 80–90%, indicating that most gas exchange occurred through this area. Readings from O2 sensors attached to the skins of the fruits were compared to those from O2 sensors inserted into the fruit cavity. These indicated that the cuticle was the major barrier to gas diffusion and that there was a concentration gradient through the capsicum flesh. Permeance of the cuticle was found to be about 0.64 x 10–4 mol O2/Pa.m2.s, while permeance to CO2 was 2–3 times higher. This suggests that the cuticle is composed of a coherent film. The low rate of gas diffusion through capsicum cuticle may allow recycling of respired CO2 by photosynthesis in the flesh before harvest.


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