Six processing tomato seedlings, representative of cultivars widely cultivated over the last 80 years in Southern Europe, were compared to assess the physiological responses to chilling. Low temperature stress was applied for 24 h (1 °C, day and night). PEARSON, the oldest cultivar, reported the highest values of chlorophyll content both using DUALEX (ChlDX= 23.11) and SPAD (ChlSPAD= 35.27) and nitrogen balance index (NBIDX= 29.62) measured with DUALEX, before chilling stress. The cultivar E6203 was the least sensitive to chilling with the highest value of maximal photosystem II (PSII) efficiency (Fv/Fm2 = 0.64) at recovery and visual regrowth score (VS3 = 4.0) at regrowth period. As regards chilling tolerance in terms of maximal PSII efficiency, few differences were observed among the cultivars, apart from C33, that was the most sensitive. On the other hand, a better regrowth was recorded in the modern ones. Strong correlations were found between the different parameters investigated both before (SPAD and DUALEX) and after the chilling stress (maximal PSII efficiency, SPAD and electrolyte leakage). SPAD values at regrowth were shown to be a good indicator of tomato chilling status at regrowth period. Analysis of genetic similarity based on microsatellite markers clearly discriminated modern and old varieties according to the year of release. This information could be useful in breeding programs for new cultivars suitable for early transplant, when chilling injury can happen.

Physiological responses to chilling in cultivars of processing tomato released and cultivated over the past decades in Southern Europe / Ronga, Domenico; Rizza, Fulvia; Badeck, Franz-W; Milc, Justyna; Laviano, Luca; Montevecchi, Giuseppe; Pecchioni, Nicola; Francia, Enrico. - In: SCIENTIA HORTICULTURAE. - ISSN 0304-4238. - 231:(2018), pp. 118-125. [10.1016/j.scienta.2017.12.033]

Physiological responses to chilling in cultivars of processing tomato released and cultivated over the past decades in Southern Europe

Ronga, Domenico;Milc, Justyna;Laviano, Luca;Montevecchi, Giuseppe;Pecchioni, Nicola;Francia, Enrico
2018

Abstract

Six processing tomato seedlings, representative of cultivars widely cultivated over the last 80 years in Southern Europe, were compared to assess the physiological responses to chilling. Low temperature stress was applied for 24 h (1 °C, day and night). PEARSON, the oldest cultivar, reported the highest values of chlorophyll content both using DUALEX (ChlDX= 23.11) and SPAD (ChlSPAD= 35.27) and nitrogen balance index (NBIDX= 29.62) measured with DUALEX, before chilling stress. The cultivar E6203 was the least sensitive to chilling with the highest value of maximal photosystem II (PSII) efficiency (Fv/Fm2 = 0.64) at recovery and visual regrowth score (VS3 = 4.0) at regrowth period. As regards chilling tolerance in terms of maximal PSII efficiency, few differences were observed among the cultivars, apart from C33, that was the most sensitive. On the other hand, a better regrowth was recorded in the modern ones. Strong correlations were found between the different parameters investigated both before (SPAD and DUALEX) and after the chilling stress (maximal PSII efficiency, SPAD and electrolyte leakage). SPAD values at regrowth were shown to be a good indicator of tomato chilling status at regrowth period. Analysis of genetic similarity based on microsatellite markers clearly discriminated modern and old varieties according to the year of release. This information could be useful in breeding programs for new cultivars suitable for early transplant, when chilling injury can happen.
231
118
125
Physiological responses to chilling in cultivars of processing tomato released and cultivated over the past decades in Southern Europe / Ronga, Domenico; Rizza, Fulvia; Badeck, Franz-W; Milc, Justyna; Laviano, Luca; Montevecchi, Giuseppe; Pecchioni, Nicola; Francia, Enrico. - In: SCIENTIA HORTICULTURAE. - ISSN 0304-4238. - 231:(2018), pp. 118-125. [10.1016/j.scienta.2017.12.033]
Ronga, Domenico; Rizza, Fulvia; Badeck, Franz-W; Milc, Justyna; Laviano, Luca; Montevecchi, Giuseppe; Pecchioni, Nicola; Francia, Enrico
File in questo prodotto:
Non ci sono file associati a questo prodotto.
Pubblicazioni consigliate

Caricamento pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1151349
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 21
  • ???jsp.display-item.citation.isi??? 17
social impact