Effects of heat stress on potato productivity and nutritive quality

Abstract

Potato, Solanum tuberosum L., is the most important non-grain food crop in the world, and a major vegetable crop in Serbia. It is generally considered a cool-season crop and highly susceptible to high temperatures. Elevated temperatures in the environment affect potato plants' growth and development by slowing the sprout emergence, reducing the number of stolons, impeding tuber initiation, reducing tuber bulking and interfering the onset of tuber dormancy. Tuberization is optimal at average daily temperatures in the 15-20 °C range and above this range declines, although moderately elevated temperatures of 20-25 °C may enhance potato foliage growth and the net photosynthesis. Besides reducing the number and mass of tubers, high-temperature stress affects the total and marketable yield of potato by causing tuber disorders and altering tuber processing and nutritive quality. The problem of potato heat-susceptibility is gaining more interest in the last decades due to occurring global climate change. The breeders' efforts have been intensified for selection of new, tolerant potato genotypes, as well as genomics' , proteomics' , and metabolomics' investigations of potato heat response.

High-Temperature Effect on Plant Development and Tuber Induction and Filling in Potato (Solanum tuberosum L.)

“…Elevated temperatures can lead to excessive elongation of the stolon and its branching, resulting in chain tuberization and stolon growth in a process known as heat sprouting [60].…”

“…High temperatures promote the partitioning of dry matter in the stems while reducing it in roots, stolons, and tubers, thereby decreasing the number of formed tubers. Consequently, the negative feedback effect of high temperature, after stolon development begins, includes a reduction in tuber initiation, diminishing the demand for photosynthate translocation to them and adversely affecting the photosynthetic system [60,61].…”

Klimatska pravda i odrast

“…ekološki otisak. On se sastoji od vodenog otiska (količine slatke vode koja se upotrebi tokom celokupnog životnog ciklusa određenog proizvoda ili usluge), ugljeničnog otiska (količine ugljen-dioksida koji se emituje tokom životnog ciklusa proizvoda ili usluge) i ekološkog otiska u užem smislu (bioproduktivnog zemljišta koje je potrebno za zadovoljenje ljudskih zahteva) (Momčilović, 2019). Glavni doprinos ekološkom otisku daju emisije ugljen-dioksida, a koje nastaju usled upotrebe fosilnih goriva (ibid.).…”

Influence of plant health clinic training services on potato production: Evidence from smallholder farmers in molo sub-county, Kenya

“…Among the key crops in agricultural sectors dominated by smallholder farmers is potato (Devaux et al, 2020). Potato is a worthwhile cash and food crop grown in more than 158 countries in temperate, subtropical, and tropical agro-ecologies (Momčilović, 2019). In terms of ranking, potato is ranked as the number four principal food crop in terms of production after maize, rice, wheat and therefore the largest non-cereal food crop cultivated in the world (FAO, 2019).…”