Variation for apical sterility among diploid, tetraploid and hexaploid Iranian wheats under meiotic stage water-stressed and well-watered conditions

2015 ◽  
Vol 66 (1) ◽  
pp. 42 ◽  
Author(s):  
Shahram Mohammady
Keyword(s):  
Water Stress ◽  
Wild Species ◽  
Grain Production ◽  
Meiotic Stage ◽  
Ploidy Levels ◽  
Ovary Weight ◽  
Water Stress Tolerance ◽  
Modern Breeding ◽  
Modern Varieties ◽  
Significant Pair

Genetic variation for improving water-stress tolerance has been lost during selection and modern breeding in wheat. Thus, finding genetic sources for drought tolerance is more likely in landraces and wild species than in modern varieties. The objectives of this study were to determine variations for water-stress-induced apical sterility and some related characters among Iranian landraces and wild species, and to analyse the contribution of apical sterility and related characters to grain production of the genotypes. The results showed considerable variation among wheat genotypes for water-stress-induced apical sterility and its related characters. Variations were also observed between ploidy levels for some of these characters. However, the amount of variation observed among the genotypes was not the same for all characters and in all treatments. Considerable significant pair-wise differences were also observed between genotypes for apical sterility under water-stressed conditions. In addition, regression analysis revealed that grain yield per plant is mainly dependent on ovary weight under well-watered conditions and on anther weight under water-stressed conditions.

Rhizosphere Symbionts Improve Water Stress Tolerance in Moldavian balm through Modulation of Osmolytes

Rhizosphere ◽  
2021 ◽  
pp. 100367
Author(s):  
Zohreh Ghanbarzadeh ◽  
Hajar Zamani ◽  
Sasan Mohsenzadeh ◽  
Łukasz Marczak ◽  
Maciej Stobiecki ◽  
...  
Keyword(s):  
Water Stress ◽  
Stress Tolerance ◽  
Water Stress Tolerance

Screening for water stress tolerance in eleven plum (Prunussalicina L.) Cultivars using agronomic and physiological traits

2021 ◽  
Vol 281 ◽  
pp. 109992
Author(s):  
Anas Hamdani ◽  
Jamal Charafi ◽  
Said Bouda ◽  
Lahcen Hssaini ◽  
Atman Adiba ◽  
...  
Keyword(s):  
Water Stress ◽  
Stress Tolerance ◽  
Physiological Traits ◽  
Water Stress Tolerance

LIFE HISTORY TYPE AND WATER STRESS TOLERANCE IN NINE CALIFORNIA CHAPARRAL SPECIES (RHAMNACEAE)

2007 ◽  
Vol 77 (2) ◽  
pp. 239-253 ◽  
Author(s):  
R. B. Pratt ◽  
A. L. Jacobsen ◽  
K. A. Golgotiu ◽  
J. S. Sperry ◽  
F. W. Ewers ◽  
...  
Keyword(s):  
Life History ◽  
Water Stress ◽  
Stress Tolerance ◽  
Water Stress Tolerance

scholarly journals Estimation of water stress tolerance of six woody plant species

2021 ◽  
Vol 5 (2) ◽  
pp. 64-72
Author(s):  
Danesha Seth Carley ◽  
Lauren A Gragg ◽  
Matthew J Matthew ◽  
Thomas W Rufty
Keyword(s):  
Water Stress ◽  
Stress Tolerance ◽  
Plant Species ◽  
Woody Plant ◽  
Woody Plant Species ◽  
Water Stress Tolerance

scholarly journals Genomic Analysis of Serratia plymuthica MBSA-MJ1: A Plant Growth Promoting Rhizobacteria That Improves Water Stress Tolerance in Greenhouse Ornamentals

2021 ◽  
Vol 12 ◽  
Author(s):  
Nathan P. Nordstedt ◽  
Michelle L. Jones
Keyword(s):  
Water Stress ◽  
Plant Growth ◽  
Stress Tolerance ◽  
Stress Responses ◽  
Plant Growth Promoting Rhizobacteria ◽  
Serratia Plymuthica ◽  
Water Stress Tolerance ◽  
Plant Growth Promoting ◽  
Growth Promoting

Water stress decreases the health and quality of horticulture crops by inhibiting photosynthesis, transpiration, and nutrient uptake. Application of plant growth promoting rhizobacteria (PGPR) can increase the growth, stress tolerance, and overall quality of field and greenhouse grown crops subjected to water stress. Here, we evaluated Serratia plymuthica MBSA-MJ1 for its ability to increase plant growth and quality of Petunia × hybrida (petunia), Impatiens walleriana (impatiens), and Viola × wittrockiana (pansy) plants recovering from severe water stress. Plants were treated weekly with inoculum of MBSA-MJ1, and plant growth and quality were evaluated 2 weeks after recovery from water stress. Application of S. plymuthica MBSA-MJ1 increased the visual quality and shoot biomass of petunia and impatiens and increased the flower number of petunia after recovery from water stress. In addition, in vitro characterizations showed that MBSA-MJ1 is a motile bacterium with moderate levels of antibiotic resistance that can withstand osmotic stress. Further, comprehensive genomic analyses identified genes putatively involved in bacterial osmotic and oxidative stress responses and the synthesis of osmoprotectants and vitamins that could potentially be involved in increasing plant water stress tolerance. This work provides a better understanding of potential mechanisms involved in beneficial plant-microbe interactions under abiotic stress using a novel S. plymuthica strain as a model.

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