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Titolo:
Thermostabilities of grain beta-amylase and beta-glucanase in Finnish landrace barleys and their putative past adaptedness
Autore:
Ahokas, H; Manninen, ML;
Indirizzi:
Crops & Soil Agr Res Ctr, FIN-31600 Jokioinen, Finland Crops & Soil Agr Res Ctr Jokioinen Finland FIN-31600 Jokioinen, Finland
Titolo Testata:
HEREDITAS
fascicolo: 2, volume: 132, anno: 2000,
pagine: 111 - 118
SICI:
0018-0661(2000)132:2<111:TOGBAB>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
HORDEUM-VULGARE; DEVELOPMENTAL REGULATION; INDIVIDUAL ISOENZYMES; GERMINATING BARLEY; MALTING QUALITY; EXPRESSION; ENDOHYDROLASES; STABILITY; (1,3-1,4)-BETA-GLUCANASE; GLYCOSYLATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
47
Recensione:
Indirizzi per estratti:
Indirizzo: Ahokas, H Crops & Soil Agr Res Ctr, Myllytie 10, FIN-31600 Jokioinen, Finland Crops & Soil Agr Res Ctr Myllytie 10 Jokioinen Finland FIN-31600
Citazione:
H. Ahokas e M.L. Manninen, "Thermostabilities of grain beta-amylase and beta-glucanase in Finnish landrace barleys and their putative past adaptedness", HEREDITAS, 132(2), 2000, pp. 111-118

Abstract

Thermostability of beta-amylase activity was a general feature in a sampleof 32 Finnish barley landraces. One of two Finnish landraces probably contributed the thermostability to cv. 'Pirkka' in crosses performed about 70 years ago. The stability is less evolved in beta-glucanase activity althoughthe most tolerant types appeared in landraces and in Pirkka with a Finnishlandrace background. Selection pressure for thermostability in grains may have been a feature of traditional crop management practices among Finns inthe past: drying grain crops, including premature barley, above an oven ina special drying house at temperatures exceeding 55 degrees C, and germination in black, sunlit slash-and-burn soils, with a measured surface temperature of 63 degrees C. A positive, though small correlation between the thermotolerance ratios of the two enzymes may be a remnant of their common longselection pressure ending tens of generations prior to collection in the 1960s and 1970s.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 05/04/20 alle ore 23:09:26