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Interactive effect of genotype × storage period on tuber dormancy period (a), sprout length (b), weight loss (c), starch (d), sucrose (e), fructose (f), and glucose contents (g) of six potato genotypes subjected to BAP and GA3 solutions. The treatment means sharing the same letter are non-significant (P > 0.05) according to the least significant difference test. The vertical bars represent the standard error of means (n: 3).
Source publication
Abstract The development of an efficient, safe, and environment-friendly technique to terminate tuber dormancy in potatoes (Solanum tuberosum L.) is of great concern due to the immense scope of multiple cropping all over the globe. The breakage of tuber dormancy has been associated with numerous physiological changes, including a decline in the lev...
Citations
... α-Amylase is closely associated with starch metabolism. Its activity often increases during the initial stages of deep dormancy, likely owing to an accumulation of starch reserves within the seeds [42]. As the dormancy phase diminishes, the seeds utilize the stored starch for energy. ...
... (A) α-Amylase is closely associated with starch metabolism. Its activity often increases during the initial stages of deep dormancy, likely owing to an accumulation of starch reserves within the seeds [42]. As the dormancy phase diminishes, the seeds utilize the stored starch for energy. ...
This study investigated the efficacy of carvone, abscisic acid (ABA), gibberellin (GA3), and variable temperature in managing dormancy and sprouting in aeroponically grown mini-tuber potato (Solanum tuberosum L.) seeds. The results showed that carvone treatment effectively reduced the weight loss rate by 12.25% and decay rate by 3.33% at day 25 compared to control. ABA treatment significantly enhanced the germination rate, increasing it to 97.33%. GA3 treatment resulted in the longest sprouts of 14.24 mm and reduced the MDA content by 23.08% at day 30, indicating its potential in shortening dormancy and maintaining membrane integrity. The variable-temperature treatment demonstrated a balanced performance in reducing weight loss and maintaining a lower relative conductivity, indicating less cellular damage. The enzymatic activities of α-amylase, CAT, and SOD were modulated by the treatments, ensuring a balanced enzymatic environment for seed vitality. These results establish a solid basis for improving postharvest management strategies to optimize germination uniformity and preserve the quality of aeroponic potato seeds during extended dormancy, promising enhanced yield and productivity in potato cultivation.
Heat stress significantly impacts the physiology of potato plants (Solanum tuberosum L.). Regardless of the phenological stage at which thermal stress occurs, the most notable effect consistently emerges in tuber production. Heat stress can disrupt photosynthesis, transpiration, and overall plant metabolism. It is known that various genes encoding enzymes and glucose and sucrose transporters respond to temperature changes, influencing the partitioning of carbohydrates toward storage organs. This disturbance leads to disruptions in starch formation in tubers, affecting their development, and subsequently, the yield and quality of tubers. Understanding these interactions is crucial for developing heat-tolerant potato varieties in the face of climate change resulting from global warming.
