Free proline accumulation and drought resistance inCicer arietinum L.

1981 ◽  
Vol 23 (2) ◽  
pp. 86-90 ◽  
Author(s):  
G. Singh ◽  
V. K. Rai
Keyword(s):  
Drought Resistance ◽  
Proline Accumulation ◽  
Free Proline

scholarly journals DIVERSE STRATEGIES OF RHODODENDRON (Rhododendron sp.) GENOTYPES IN THE WATER SHORTAGE MANAGEMENT

2020 ◽  
Vol 19 (3) ◽  
pp. 159-165
Author(s):  
Peter Ferus ◽  
Dominika Bošiaková ◽  
Jana Konôpková ◽  
Peter Hoťka
Keyword(s):  
Climate Change ◽  
Drought Resistance ◽  
Water Shortage ◽  
Proline Accumulation ◽  
The Other ◽  
Summer Drought ◽  
Free Proline ◽  
Resistance Strategies ◽  
Relative Water ◽  
Leaf Relative Water Content

Rhododendrons in numerous gardens in Central Europe are frequently endangered by adverse summer drought periods associated with the climate change. Therefore, in this work drought-resistance strategies in recent genotypes of these highly aesthetic shrubs were investigated. Dehydrated Rhododendron groenlandicum ‘Helma’, R. obtusum ‘Michiko’ and R. hybridum ‘Polarnacht’ showed high initial stomatal conductances (gS), after few days steeply falling to the stable minimum at ca. 20, 85 and 70% leaf relative water content (RWC), respectively. Except of ‘Polarnacht’, they had relatively large specific leaf area and ‘Michiko’ also free proline accumulation. On the other hand, R. repens ‘Scarlet Wonder’ and R. hybridum ‘Red Jack’ started with half gS values, continuously declining 1.5–2 fold longer compared to the first group of genotypes (RWC of ca. 60 and 75%, respectively). Both produced relatively thick leaves but did not show any osmotic adjustment. Among observed drought-resistance strategies, lower and longer period active transpiration with stomata sensitive to the water loss, as found in R. repens ‘Scarlet Wonder’ and R. × hybridum ‘Red Jack’, were accepted as the most effective for drought-affected rhododendron plantations.

Evaluation of Free Proline Accumulation as an Index of Drought Resistance Using Two Contrasting Barley Cultivars 1

Crop Science ◽  
1977 ◽  
Vol 17 (5) ◽  
pp. 720-726 ◽  
Author(s):  
Andrew D. Hanson ◽  
Charles E. Nelsen ◽  
Everett H. Everson
Keyword(s):  
Drought Resistance ◽  
Proline Accumulation ◽  
Free Proline ◽  
Barley Cultivars

Proline Accumulation and Varietal Adaptability to Drought in Barley: a Potential Metabolic Measure of Drought Resistance

1972 ◽  
Vol 236 (67) ◽  
pp. 188-190 ◽  
Author(s):  
T. N. SINGH ◽  
D. ASPINALL ◽  
L. G. PALEG
Keyword(s):  
Drought Resistance ◽  
Proline Accumulation

Capacity for Proline Accumulation During Water Stress in Barley and Its Implications for Breeding for Drought Resistance 1

Crop Science ◽  
1979 ◽  
Vol 19 (4) ◽  
pp. 489-493 ◽  
Author(s):  
A. D. Hanson ◽  
C. E. Nelsen ◽  
A. R. Pedersen ◽  
E. H. Everson
Keyword(s):  
Water Stress ◽  
Drought Resistance ◽  
Proline Accumulation

Proline accumulation in flooded and wilted sunflower and the effects of benzyladenine and abscisic acid

1975 ◽  
Vol 53 (23) ◽  
pp. 2893-2896 ◽  
Author(s):  
Robert L. Wample ◽  
J. Derek Bewley
Keyword(s):  
Abscisic Acid ◽  
Water Stress ◽  
Foliar Application ◽  
Proline Accumulation ◽  
Free Proline

Sunflower accumulates proline in its aerial and subterranean parts when subjected to water stress. Decreases in the proline pool on recovery are slow. Plants that wilted in darkness do not accumulate proline, and plants that are subjected to a 16-h photoperiod and are sprayed with benzyladenine also show reduced accumulation. Flooded plants show increases in their endogenous free-proline pool, which can be reduced by aeration of the roots or by foliar application of benzyladenine. Abscisic acid does not induce free-proline accumulation in unstressed plants.

Variation between and within species of rapeseed (Brassica campestris and B. napus) in response to drought stress III. Physiological and physicochemical characters

1978 ◽  
Vol 29 (3) ◽  
pp. 491 ◽  
Author(s):  
RA Richards
Keyword(s):  
Drought Resistance ◽  
Brassica Campestris ◽  
Germination Rate ◽  
Genotypic Variation ◽  
Leaf Tissue ◽  
Germination Percentage ◽  
Proline Accumulation ◽  
Diffusive Resistance ◽  
Simulated Drought ◽  
Use Efficiency

Genotypic variation in physiological and physicochemical parameters associated with drought resistance was observed between cultivars in Brassica napus and B. campestris. Significant variation in proline accumulation, chlorophyll stability, germination rate and percentage, relative turgidity, growth rates and water use efficiency were found in plants grown under simulated drought conditions in a glasshouse. No variation was detected between cultivars for leaf diffusive resistance or heat tolerance. A yield index for each cultivar was derived from yield performances in nine different field environments. Chlorophyll stability and proline accumulation in leaf tissue and germination percentage in solution equivalent to –17.5 bars osmotic potential was clearly related to this yield index in B. napus and to a lesser extent in B. campestris. The winter cultivars of B. napus also possessed drought resistance characteristics, and they may be a valuable resource for the development of cultivars for droughted environments. Parameters were measured in a glasshouse, prior to anthesis, and therefore offer potential as ancillary selection criteria for drought resistance in oilseed rape growing in Western Australia.

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