scholarly journals Haulm application and dipping treatments of gibberellic acid on tuber dormancy breaking and sprout induction of potato (Solanum tuberosum L.) in Central Highlands of Ethiopia

2020 ◽  
Vol 12 (1) ◽  
pp. 1-8
Author(s):  
Chindi Abebe ◽  
Tsegaw Tekalign
Keyword(s):  
Solanum Tuberosum ◽  
Gibberellic Acid ◽  
Solanum Tuberosum L ◽  
Dormancy Breaking ◽  
Tuber Dormancy ◽  
Central Highlands

scholarly journals Effect of chemical treatments used for dormancy breaking on the number of stems and tubers of Hungarian potato varieties

2020 ◽  
Vol 24 (2) ◽  
Author(s):  
Ádám Esztergályos ◽  
Zsolt Polgár
Keyword(s):  
Gibberellic Acid ◽  
Vegetation Period ◽  
Climatic Conditions ◽  
Dormancy Breaking ◽  
Tuber Dormancy ◽  
Potato Varieties ◽  
Chemical Treatments ◽  
Dormancy Period ◽  
Breaking Dormancy ◽  
Number Of Stems

The length of tuber dormancy of potato varieties is an important factor in the profitability of the potato sector. Under temperate climatic conditions longer dormancy is more advantageous. However, in case of multiple planting within one growing season, in seed multiplication programs or during rapid post-harvest disease testing, breaking or shortening of dormancy is often needed. Numerous ways for chemical regulation of dormancy period were developed, but the efficiency of such methods is strongly genotype dependent. Recently a comparative study of chemical treatments for breaking tuber dormancy of some new Hungarian potato varieties was carried out. Continuing this work, here we report about the effects of chemical treatments used for breaking dormancy on the number of stems and tubers of progeny plants. The experiment was conducted in three consecutive vegetation period, with three varieties having different maturity type and different dormancy period: Balatoni rózsa, Botond and Démon. Treatments were performed using gibberellic-acid, benzyl-adenine and Rindite in different concentrations and combinations. After the dormancy period, tubers were planted into pots and grown under controlled conditions. Number of developed stems and tubers was counted. According to the results, applied treatments had a large effect on the number of developing stems and tubers of the progeny plants. Combined treatments of Rindite+gibberellic-acid, and gibberellic-acid at 100 ppm increased significantly the number of stems and tubers. Correlation between the efficiency of dormancy breaking and the number of developed tubers was found. Based on our data, Rindite and gibberellic-acid have an important role not only in breaking dormancy, but also in increasing the tuber number/plant. This positive effect could be utilized in seed potato production.

scholarly journals Comparative Evaluation of the Effects of Gibberellic Acid Concentrations on Dormancy Break in Tubers of Solanum chacoense

2020 ◽  
Vol 30 (1) ◽  
pp. 76-81
Author(s):  
Christian T. Christensen ◽  
Lincoln Zotarelli ◽  
Kathleen G. Haynes ◽  
Charles Ethan Kelly
Keyword(s):  
Gibberellic Acid ◽  
Solanum Chacoense ◽  
Alternative Methods ◽  
Average Weight ◽  
Dormancy Breaking ◽  
Tuber Dormancy ◽  
Department Of Agriculture ◽  
Time Treatment ◽  
Sprout Length ◽  
Breaking Dormancy

Solanum chacoense is a wild relative of potato (Solanum tuberosum) that is of interest because of its many desirable traits, but it exhibits variations in tuber dormancy across accessions. The objective of this study was to determine an appropriate gibberellic acid (GA3) concentration and soak time treatment to encourage sprout development across four accessions of S. chacoense (A, B, C, and D) from the 174 accessions of the U.S. Department of Agriculture Potato Genebank. Twelve treatments were created by using four concentrations of GA3 (0, 50, 100, and 150 μg·mL−1) across three soak periods (5, 45, and 90 minutes). Small (average weight, 1.4 g), medium (2.6 g), and large (5.6 g) tubers were distributed among all treatments. Percentage of tubers sprouted, time to sprouting, sprout length, and sprout number per tuber were analyzed to determine the effectiveness of GA3 treatments on dormancy breaking. GA3 concentrations of 50, 100, and 150 μg·mL−1 partially broke dormancy within accessions B and C. None of the tested treatments were effective for breaking dormancy in accession D within 46 days after treatment. Accession A showed weaker dormancy, thus producing a similar percentage of sprouted tubers across all GA3 treatments. Soak time had no significant effect on all parameters measured. Larger tubers produced greater sprout number per tuber and percentages of sprouted tubers. Soaking tubers in 50 μg·mL−1 of GA3 may be an effective treatment for S. chacoense accessions with mild dormancy, but alternative methods to break dormancy may be required for S. chacoense accessions with stronger dormancy.

scholarly journals EFFECT OF GIBBERELLIC ACID ON GROWTH, TUBER YIELD AND QUALITY IN POTATOES (Solanum tuberosum L.)

2021 ◽  
Author(s):  
Sevgi ÇALIŞKAN ◽  
Mohammad Samım HASHEMI ◽  
Mustafa AKKAMIŞ ◽  
Ramazan İlhan AYTEKİN ◽  
Mehmet BEDİR
Keyword(s):  
Solanum Tuberosum ◽  
Gibberellic Acid ◽  
Tuber Yield ◽  
Solanum Tuberosum L ◽  
Yield And Quality
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