Potential for improving freezing stress tolerance of wild potato germplasm by supplemental calcium fertilization

1996 ◽  
Vol 73 (9) ◽  
pp. 397-409 ◽  
Author(s):  
Sandra E. Vega ◽  
John B. Bamberg ◽  
Jiwan P. Palta
Keyword(s):  
Stress Tolerance ◽  
Freezing Stress ◽  
Wild Potato ◽  
Potato Germplasm ◽  
Supplemental Calcium ◽  
Calcium Fertilization

The Inter-genebank potato database and the dimensions of available wild potato germplasm

2000 ◽  
Vol 77 (6) ◽  
pp. 353-362 ◽  
Author(s):  
Z. Huamán ◽  
R. Hoekstra ◽  
J. B. Bamberg
Keyword(s):  
Wild Potato ◽  
Potato Germplasm

scholarly journals 556 Influence of Supplemental Calcium Fertilization on Potato Tuber Size and Tuber Number

HortScience ◽  
1999 ◽  
Vol 34 (3) ◽  
pp. 542B-542
Author(s):  
Senay Ozgen ◽  
Mustafa Ozgen ◽  
Jiwan P. Palta
Keyword(s):  
Potato Tuber ◽  
Ammonium Nitrate ◽  
Calcium Level ◽  
Sandy Loam ◽  
Calcium Nitrate ◽  
Tuber Size ◽  
Tuber Number ◽  
Tuber Quality ◽  
Supplemental Calcium ◽  
Calcium Fertilization

Several recent studies, including from our laboratory, have provided evidence that by improving tuber calcium level, we can improve tuber quality such as low internal defects and better storability. The purpose of this study was to be determine the influence of supplemental calcium fertilization on tuber size and tuber number. For this purpose, plantlets of Solanum tuberosum cv. Russet Burbank raised in tissue culture were planted in 20-L pots filled with sandy loam soil with pH of 6.9 and soil calcium level of 350 ppm. All treatments received same total amount of nitrogen (at the rate of 280 kg·ha–1). Five treatments were evaluated: i) nonsplit nitrogen (from ammonium nitrate), ii) split nitrogen (from ammonium nitrate), iii) split nitrogen + gypsum, iv) split nitrogen (from liquid nitrogen) + calcium chloride, and v) split nitrogen (from calcium nitrate). The total calcium was applied at the rate of 168 kg·ha–1. Gypsum application was made at 4 weeks after planting, and other sources of calcium were applied on a split schedule (equally split at 4, 6, 8 weeks after planting). Four months after planting, tubers were harvested and evaluated. In general, all calcium treatments had lower tuber number and greater tuber size compared to the nonsplit nitrogen control. The percentage of total A-grade tubers as well as the percentage yield from A-grade tubers was increased by all calcium applications. These results suggest that calcium content I the soil can influence both potato tuber number and tuber size.

Anthocyanin biosynthesis for cold and freezing stress tolerance and desirable color in Brassica rapa

2014 ◽  
Vol 15 (4) ◽  
pp. 383-394 ◽  
Author(s):  
Nasar Uddin Ahmed ◽  
Jong-In Park ◽  
Hee-Jeong Jung ◽  
Yoonkang Hur ◽  
Ill-Sup Nou
Keyword(s):  
Stress Tolerance ◽  
Brassica Rapa ◽  
Anthocyanin Biosynthesis ◽  
Freezing Stress

scholarly journals Effect of 5-azacytidine induced DNA demethylation on abiotic stress tolerance in Arabidopsis thaliana

2019 ◽  
Vol 55 (No. 2) ◽  
pp. 73-80 ◽  
Author(s):  
Zlata V. Ogneva ◽  
Andrey R. Suprun ◽  
Alexandra S. Dubrovina ◽  
Konstantin V. Kiselev
Keyword(s):  
Arabidopsis Thaliana ◽  
Abiotic Stress ◽  
Stress Tolerance ◽  
Abiotic Stress Tolerance ◽  
Survival Rates ◽  
Biomass Accumulation ◽  
Dna Demethylation ◽  
Freezing Stress ◽  
Dna Hypomethylation ◽  
Inducible Genes

The effect of 5-azacytidine (5A)-induced DNA hypomethylation on the growth and abiotic stress tolerance of Arabidopsis thaliana were analysed. Growth analysis revealed that aqueous solutions of 5A added to the soil did not affect the fresh and dry biomass accumulation but led to a higher percentage of flowering A. thaliana plants after four weeks of cultivation. The 5A treatment considerably lowered survival rates of Arabidopsis plants under high soil salinity, heat stress, and drought, while it did not affect the survival rates after freezing stress. 5A eliminated the stimulatory effect of the heat and drought stresses on the transcriptional levels of a number of stress-inducible genes, such as DREB1, LEA, SOS1, or RD29A. A less clear but similar trend has been detected for the effect of 5A on expression of the stress-inducible genes under salt and cold stresses. The data indicate that DNA methylation is an important mechanism regulating plant abiotic stress resistance.

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