scholarly journals Productivity and seed health of husked oats (Avena sativa L.) grown under different soil moisture conditions

2012 ◽  
Vol 63 (2) ◽  
pp. 127-133
Author(s):  
Agnieszka Pszczółkowska ◽  
Gabriel Fordoński ◽  
Jacek Olszewski ◽  
Tomasz Kulik ◽  
Iwona Konopka
Keyword(s):  
Soil Moisture ◽  
Gas Exchange ◽  
Soil Water ◽  
Water Deficit ◽  
Treatment Options ◽  
Experimental Treatment ◽  
Gas Exchange Parameters ◽  
Seed Health ◽  
Moisture Conditions ◽  
Exchange Parameters

The present study investigated the effect of different soil moisture content levels (60 - 70% SWC (soil water capacity) - control; 30 - 35% SWC - water stress) on yields, gas exchange parameters, seed health, and protein fractions of husked oat grain. The study showed that water deficit resulted in a decrease in grain weight per plant and a reduction in the gas exchange rates, primarily the photosynthesis and transpiration rates. <i>Cladosporium cladosporioides</i> was the dominant species on oat kernels in both experimental treatment options and in both years of the study. The presence of <i>Fusarium poae</i> was also found. Higher contents of prolamin, albumin and globulin fractions were found in the oat grain harvested from plants grown under soil water deficit conditions.

scholarly journals The Effect of Water Stress on the Gas Exchange Parameters, Productivity and Seed Health of Buckwheat (Fagopyrum esculentum Moench)

2012 ◽  
Vol 63 (1) ◽  
pp. 67-76 ◽  
Author(s):  
Agnieszka Pszczółkowska ◽  
Gabriel Fordoński ◽  
Tomasz Kulik ◽  
Jacek Olszewski ◽  
Krystyna Płodzień ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Water Stress ◽  
Gas Exchange ◽  
Water Deficit ◽  
Control Treatment ◽  
Fungal Colonization ◽  
Gas Exchange Parameters ◽  
Moisture Contents ◽  
Fagopyrum Esculentum Moench ◽  
Exchange Parameters

The present pot experiment studied the effect of different soil moisture contents (60 - 70% CWC (capillary water capacity) - control; 30 - 35% CWC - water stress) on buckwheat productivity, the gas exchange parameters and health of buckwheat nuts. It was found that water deficit affected adversely certain biometric features investigated (plant height, number of nuts per cluster) and caused a decrease in seed weight per plant. It was also shown that water stress reduced the values of the investigated gas exchange parameters (photosynthesis rate, transpiration rate, intercellular-space CO<sub>2</sub> concentration, and stomatal conductance) relative to the control treatment. Different soil moisture contents did not have a clear effect on fungal colonization of seeds. The multiplex PCR assays did not enable the detection of the genes responsible for mycotoxin synthesis. Under water deficit conditions, an increase was found in the content of albumin and globulin fractions as well as of glutelin fractions.

scholarly journals The complexity-stability hypothesis in plant gas exchange under water deficit

2005 ◽  
Vol 17 (4) ◽  
pp. 363-373 ◽  
Author(s):  
Gustavo M. Souza ◽  
Steven M Pincus ◽  
José Alberto F. Monteiro
Keyword(s):  
Gas Exchange ◽  
Water Deficit ◽  
Temporal Dynamics ◽  
Approximate Entropy ◽  
Exchange Parameter ◽  
Gas Exchange Parameters ◽  
Gas Exchanges ◽  
Respiratory Dynamics ◽  
Net Assimilation ◽  
Exchange Parameters

We hypothesized that more complex, i.e. irregular, temporal dynamics and a more interconnected overall network supports greater stability to gas exchange parameters (herein, CO2 net assimilation and transpiration) in plants under water deficit. To test this hypothesis two genotypes of Phaseolus vulgaris were subjected to a period of absence of irrigation, and subsequent rewatering to achieve recovery. Gas exchanges parameters were measured each 10 s during 6 h to obtain time series to evaluate complexity by Approximate Entropy (ApEn) calculations, and network connectance in each water regime. Notably, the Jalo Precoce genotype showed significantly more stability than the Guarumbé genotype under system perturbation, coincident with greater irregularity in each gas exchange parameter and greater overall connectance for Jalo Precoce. This conclusion is consistent with other observations of greater homeostasis in more complex networks, seen in broad contexts such as cardiac rhythms and respiratory dynamics

scholarly journals Responses of Gas Exchange Parameters of Goldspur Apple Tree to Soil Water Variation

2004 ◽  
Vol 28 (1) ◽  
pp. 66-72
Author(s):  
ZHANG Guang-Can ◽  
LIU Xia ◽  
HE Kang-Ning ◽  
WANG Bai-Tian
Keyword(s):  
Gas Exchange ◽  
Soil Water ◽  
Apple Tree ◽  
Gas Exchange Parameters ◽  
Exchange Parameters

Effect of Water Deficit on Gas Exchange Parameters, Productivity and Grain Wholesomeness of Spring Wheat

2009 ◽  
Vol 24 (2) ◽  
pp. 85-92 ◽  
Author(s):  
Jacek Olszewski ◽  
Agnieszka Pszczółkowska ◽  
Monika Makowska ◽  
Tomasz Kulik ◽  
Adam Okorski
Keyword(s):  
Gas Exchange ◽  
Water Deficit ◽  
Spring Wheat ◽  
Gas Exchange Parameters ◽  
Effect Of Water ◽  
Exchange Parameters
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