Comparison of Methods for Dry Matter Content Determination in Potato Using Multi-Environments Field Data and Stability Statistics

Abstract

Tuber dry matter content (TDM) is considered as the main determinant of processed potato tuber quality. In order to investigate rapid, practicable and reliable methods for the measurement of TDM, a study was planned to compare three standard methods (digital potato hydrometer, moisture-drying on quartz seasand and oven-dry) among 189 diverse potato genotypes, grown under three environmental conditions (Hatay "standard water application", Konya "standard water application" and Konya "drought" conditions). ANOVA revealed highly significant differences (p<0.01) in all treatments among tests, checks and tests vs check genotypes. Environmental conditions significantly affect the TDM, while methods showed differential response within the tested environments. A strong correlation (r) and high goodness of fit (R 2 ) was observed between seasand and hydrometer methods as compared to oven-dry method. Wide applicability and reliability of seasand and hydrometer methods were also confirmed by stability statistics. This study recommends seasand as an accurate and hydrometers as rapid method in contrast to oven dry method for the measurement of TDM. Parametric stability methods such as bi and S 2 di identified stable genotypes with optimum TDM, that can serve as a useful resource for breeding of processing cultivars.

Influence of Edible Potato Production Technologies with the Use of Soil Conditioner on the Nutritional Value of Tubers

“…The post-harvest dry matter content in tubers of the tested Satina variety, regardless of factors, averaged 152.0 and 146.9 g kg −1 for Experiment I and Experiment II, respectively (Tables 1 and 2). The varying dry matter content of tubers of edible varieties has been reported by Koch et al [38], Mystkowska [39] and Naeem and Caliskan [40], among others. According to the authors, the dry matter content of tubers, depending on the variety and the cultivation technology, can vary within very large limits from 183 g kg −1 in the study of Mystkowska [39] to 350 g kg −1 in the study of Naeem and Caliskan [40].…”

“…The varying dry matter content of tubers of edible varieties has been reported by Koch et al [38], Mystkowska [39] and Naeem and Caliskan [40], among others. According to the authors, the dry matter content of tubers, depending on the variety and the cultivation technology, can vary within very large limits from 183 g kg −1 in the study of Mystkowska [39] to 350 g kg −1 in the study of Naeem and Caliskan [40]. In our study, only the application of manure in Experiment II had a significant effect on the change in dry matter content (Table 2).…”

Adaptability, stability, and productivity of potato breeding clones and cultivars at high latitudes in Europe

“…In this regard, after using various stability measurements were able to identify 'Kuras' as a stable starch cultivar. It is also worth indicating that Naeem and Caliskan (2020) found that stability statistics depend on the method used for determining dry matter in the tubers.…”

Production of seed tubers from true potato seed in Jos- Plateau, Nigeria

“…Clones 9 and 10 could be chosen for this purpose. Naeem and Caliskan (2020) analysed 189 potato genotypes and reported tuber dry matter ranged from 15.19% to 34.50%. They noted that dry matter content was an early determinant of tuber quality and that it influenced the final yield of processed tuber products (chips/crisps and French fries).…”