Effect of Photoperiod, Temperature, and Certain Growth Regulators on Frost Hardiness of Solanum Species

Chen, P.; Li, P. H.

doi:10.1086/336848

Cited by 38 publications

(26 citation statements)

References 16 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Solanum tuberosum, the widely cultivated species, possesses very little frost hardiness, whereas a number of noncultivated species are frosttolerant (15). Differences in frost-tolerant characteristics have been compared among tuber-bearing Solanum potatoes (4,6,15). Different potato species possess various levels of frost hardiness (15) and also have different capabilities in developing frost hardiness upon subjection to low temperatures (6).…”

mentioning

confidence: 99%

“…Differences in frost-tolerant characteristics have been compared among tuber-bearing Solanum potatoes (4,6,15). Different potato species possess various levels of frost hardiness (15) and also have different capabilities in developing frost hardiness upon subjection to low temperatures (6). Species such as Solanum acaule and Solanum commersonji can be hardened by exposing plants to low temperatures, whereas others, such as S. tuberosum, fail to harden (4,6).…”

mentioning

confidence: 99%

“…Different potato species possess various levels of frost hardiness (15) and also have different capabilities in developing frost hardiness upon subjection to low temperatures (6). Species such as Solanum acaule and Solanum commersonji can be hardened by exposing plants to low temperatures, whereas others, such as S. tuberosum, fail to harden (4,6). It is also known that levels of hardiness achieved are dependent on acclimation temperatures used.…”

mentioning

confidence: 99%

“…The lower the acclimating temperatures, as long as it is above 0 C, the greater the hardiness achieved (4). The finding that some Solanum species can be cold-acclimated to some extent (6) is not only interesting to potato breeders for breeding frost-resistant potatoes but also provides better materials for studying coldhardiness mechanisms and cold-acclimation characteristics. A better understanding of the nature of frost hardiness certainly will contribute to success in frost-hardiness breeding.…”

mentioning

confidence: 99%

“…Comparisons were made between S. acaule, which is a frosttolerant potato (surviving at -5 C) and capable of cold acclimation, and S. tuberosum, which is frost-sensitive (surviving at -2 C) and incapable of cold acclimation (4 (6). Following each week's conditioning treatment, frost hardiness of fully expanded leaves was determined, and fully mature leaves were collected for chemical analysis.…”

mentioning

confidence: 99%

See 4 more Smart Citations

Biochemical Changes in Tuber-bearing Solanum Species in Relation to Frost Hardiness during Cold Acclimation

Chen

Li²

1980

Plant Physiol.

View full text Add to dashboard Cite

Biochemical changes in potato leaves during cold acclimation have been examined and compared between a frost-tolerant S. acauk and a frostsusceptible S. tuberosum species. Changes were also examined in S. tuberosum, S. acauk, and S. commersonii species when they were hardened at different temperatures to varying hardiness levels.During three weeks of stepwise cold accfimation, S. acauk increased frost hardiness from -6.0 C (killing temperature) to -9.0 C, whereas frost hardiness of S. tuberosum remained unchanged at -3.0 C. Decreases in DNA content on a dry weight basis in both species suggest that matured leaf cells accumulated more dry matter during acclimation. The advantage of using DNA as a reference for comparing metabolite changes during cold acclimation is discussed.Under the stepwise acclimating conditions, both species showed the same trends for increasing total sugar and starch with an insignificant decrease in leaf water content. High levels of total RNA, rRNA, and total and soluble protein were observed in treated S. acauke plants as compared with controls, but not in S. taberoswn. Levels of total lipid and phospholipid also were high in treated S. acauk plants as compared with controls but decreased in S. tuberosum during acclmation.When S. tuberosum, S. acaukl, and S. commersonii potatoes were coldtreated at constant day/night temperatures of 10, 5, and 2 C with 14-hour daylength, each species responds differently in terms of frost hardiness increase upon subjecting plants to a low temperature. For instance, after 20 days at 2 C, a net frost hardiness of 3 and 7 C was observed in S. acaude and S. coumersonii, respectively, whereas the frost hardiness in S. tuberoswn remained unchanged. Also, various levels of frost hardiness can be achieved in a species by subjecting plants to different low temperature treatments. Under a warm regime of 20/15 C day/night temperatures (14-hour light), both S. acauk and S. conunersonii can survive at -4.5 C or colder, whereas S. tuberosum can survive only at -2.5 C.Biochemical changes in the leaf tissue of these species were investigated at 5-day intervals during low temperature treatments. Increases in total sugar and starch were found in all three species during hardening, although S. tuberosum failed to harden. Soluble protein contents were increased in both S. acead and S. commersonii but decreased in S. tuberosunL RNA contents change in a pattern similar to the soluble protein. Net increases of the soluble proteins were positively and significantly correlated with net

show abstract

mentioning

confidence: 99%