Genetic analysis of tuber yield, processing and nutritional traits in potato (Solanum tuberosum)

Abstract

The present study was aimed to assess the genetic analysis of tuber yield, processing and nutritional traits in potatoes based on evaluation of 23 genotypes during the winter crop season in sub-tropical plains of India. Characters, viz. reducing sugars followed by chip colour score, phenols, soluble proteins, sucrose, total free amino acids and marketable tuber yield had high genotypic and phenotypic variation, heritability and genetic advance as percent of mean and can be improved by practising selection in potato breeding programme. The results revealed that table potatoes possessed high yield and high phenols content. Whereas, processing potatoes recorded moderate tuber yield, but had high soluble protein and high ascorbic acid, low reducing sugars, low sucrose, low phenols and low total free amino acids. Study suggests that genotypes with moderate to high tuber dry matter, high soluble protein and high ascorbic acid should be selected for improving nutritionally superior table potatoes.

Association of frost injury with tuber yield components in potato (Solanum tuberosum L.)

“…The maximum genetic advance was observed for frost injury followed by tuber number, average tuber weight, economic tuber yield and total tuber yield. The present finding of high genetic advance for tuber number, average tuber weight and tuber yield confirmed the findings of Birhman et al (1984) and Luthra (2001).…”

“…Tuber number possessed significantly negative correlation with average tuber weight but significantly positive association with stem number, however all were positively correlated with tuber yield. positive association of tuber number with stem number but its negative association with average tuber weight confirmed the findings of Desai and Jaimini (1998), Gopal (1999), Luthra (2001) and Luthra et al (2006). Potato genotypes with many thin stems are known to produce numerous small sized tubers and such genotypes could be exploited in breeding for production of varieties suitable for baby potatoes.…”

Perspectives in consumer-oriented breeding for potatoes in India

“…They also reported a significant and positive correlation between these two nutrients in some of theaccessions, indicating the feasibility of breeding for both these nutrients simultaneously. Studies by Luthra et al (2018a) indicate that, for breeding nutritionally superior table potato genotypes moderate to high tuber dry matter, high soluble protein and high ascorbic acid may be selected in the hybrid progenies. Molecular analysis of the progenies of a cross between Bareilly Red (Red skin, round shape, deep eyes, cream flesh with red broad vascular ring) and CP3770 (Red skin, round shape, medium deep dark red eyes, yellow flesh) using a highly polymorphic and diagnostic SSR marker (STM2005) for tuber flesh colour showed segregating profiles in the progenies and five advanced generation clones could be identified having desirable nutritional profiles (Luthra et al, 2018b).…”

“…Development of early maturing processing varieties,varieties resistant to cold induced sweeteningand antioxidant rich processed products for the consumers, are the future scopes for this flourishing industry. Additional internal quality traits like glycoalkaloids, enzymatic discoloration, nutritional quality, greening(>3%), total tuber defects and tuber dormancy also need to be considered(> 15%) (Storey, 2007, Jansky 2009, Werij 2011, Luthra et al, 2018aand Luthra and Gupta, 2019. Beyond its consumption mainly as human food, potato is https://doi.org/10.37992/2023.1401.008…”

Correlation and Path Coefficient Analysis among Yield and Yield Associated Traits in Potato (Solanum tuberosum L.) Accessions in the ‘Terai’ Region of Uttarakhand

“…Since the establishment of the Central Potato Research Institute in Shimla in 1949, have developed and released a total of 56 potato varieties that are suitable for various potatogrowing regions in the country [8]. The primary goal in potato breeding is to achieve high tuber yield while ensuring good quality.…”