scholarly journals Selection criteria for drought tolerance at the vegetative phase in early maturing maize

2016 ◽  
Vol 15 (20) ◽  
pp. 816-822 ◽  
Author(s):  
O Akinwale R ◽  
A B Fakorede M ◽  
Oluwaranti A ◽  
Badu Apraku B ◽  
I Adejumobi I
Keyword(s):  
Drought Tolerance ◽  
Selection Criteria ◽  
Vegetative Phase ◽  
Early Maturing

scholarly journals Selection criteria for assessing drought tolerance in a segregating population of flax (Linum usitatissimum L.)

2016 ◽  
Author(s):  
Parvaneh Asgarinia ◽  
Aghafakhr Mirlohi ◽  
Ghodratollah Saeidi ◽  
Ali Akbar Mohamadi Mirik ◽  
Mahdi Gheysari ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Linum Usitatissimum ◽  
Selection Criteria ◽  
Linum Usitatissimum L ◽  
Segregating Population

Evaluation of physiological traits as indirect selection criteria for drought tolerance in sugar beet

2005 ◽  
Vol 91 (2-3) ◽  
pp. 231-249 ◽  
Author(s):  
Eric S. Ober ◽  
Mich Le Bloa ◽  
Chris J.A. Clark ◽  
Andy Royal ◽  
Keith W. Jaggard ◽  
...  
Keyword(s):  
Drought Tolerance ◽  
Sugar Beet ◽  
Selection Criteria ◽  
Indirect Selection ◽  
Physiological Traits

Results of potato varietieis for drought tolerance in vitro conditoin

2018 ◽  
Vol 22 (03) ◽  
pp. 72-76
Author(s):  
Enkhbold B ◽  
Ninjmaa O ◽  
Nyamgerel Kh
Keyword(s):  
Water Stress ◽  
Drought Stress ◽  
Drought Tolerance ◽  
High Performance ◽  
Stressed Condition ◽  
Peg 6000 ◽  
Screening Experiment ◽  
Early Maturing ◽  
Potato Plantlet

The laboratory’s experiment conducted at IPAS in 2017. The goal of this study was to evaluate drought stress tolerance of released potato varieties using PEG-6000 in-vitro condition. Middle maturing variety Gala, early maturing Solist and Quarta were used experiment. The objectives were to determine how osmosis pressure affected potato plantlet height, root length, total weight of biomass, and stem diameter using their index comparing to normal condition. The screening experiment used three different treatments. The water stress treatments 0 MPa (control), -0.05 MPa and -0,15 MPa were created by PEG-6000. 6 weeks’ year’s old plantlets were measured by 5 features. The variety Gala showed significant high index by 5 performances among the stressed condition compared to Quarta and Solist. The variety Quarta also showed high performance compared Solist. As a result of this study found out that cultivar Gala more tolerant to drought than Quarta and Solist.

Evaluation of the tolerance of Thai indigenous upland rice germplasm to early drought stress using multiple selection criteria

2015 ◽  
Vol 15 (2) ◽  
pp. 109-118 ◽  
Author(s):  
Kittichai Narenoot ◽  
Tidarat Monkham ◽  
Sompong Chankaew ◽  
Patcharin Songsri ◽  
Wattana Pattanagul ◽  
...  
Keyword(s):  
Drought Stress ◽  
Drought Tolerance ◽  
Selection Criteria ◽  
Upland Rice ◽  
Block Design ◽  
Rice Variety ◽  
Tolerance Index ◽  
Rice Varieties ◽  
Rice Germplasm ◽  
Drought Tolerance Index

Drought remains the most important factor that affects rice productivity, especially in rainfed areas, worldwide. Upland rice is one of the crop choices of farmers in the rainfed environment. Although upland rice varieties require less water than lowland rice varieties, yields often remain limited by drought, particularly in the period of early growth. The aims of this study were to identify the traits related to early drought tolerance in upland rice varieties, and to identify the potential sources of germplasm for early drought tolerance. A total of sixty upland rice varieties were planted in a factorial experiment with a randomized complete block design with 3 replications in the rainy seasons of 2011 and 2012, under greenhouse conditions. Based on the drought tolerance index (DTI), the test germplasm sources were classified into three groups: (i) susceptible; (ii) moderately tolerant; (iii) tolerant to drought stress. Grain yield (GY) showed significant negative correlations with the leaf rolling score (r= − 0.623, P< 0.01), the leaf death score (LDS) (r= − 0.673, P< 0.01) and the recovery score (r= − 0.746, P< 0.01), while leaf dry matter (r= 0.698, P< 0.01) and leaf water potential (r= 0.618, P< 0.01) had significant positive correlations with GY. These findings indicate the suitability of the DTI as the selection criteria for early drought tolerance in a breeding programme. In addition, the upland rice germplasm accessions KKU-ULR011, KKU-ULR012, KKU-ULR125, KKU-ULR199 and KKU-ULR292 were identified as having high levels of stability for drought tolerance in both the 2011 and 2012 experiments, suggesting their potential for further use for rice variety improvement for drought tolerance.

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