COLD-ACCLIMATION IN CULTIVARS OF AVENA-SATIVA

被引：19

作者：

ALBERDI, M

CORCUERA, LJ

MALDONADO, C

BARRIENTOS, M

FERNANDEZ, J

HENRIQUEZ, O

机构：

[1] UNIV AUSTRAL CHILE, INST MED PREVENT, VALDIVIA, CHILE

[2] UNIV CHILE, FAC CIENCIAS, DEPT BIOL, SANTIAGO, CHILE

来源：

PHYTOCHEMISTRY | 1993年 / 33卷 / 01期

关键词：

AVENA-SATIVA; GRAMINEAE; OATS; FROST RESISTANCE; FROST HARDINESS; COLD ACCLIMATION; COLD HARDENING; COMPATIBLE SOLUTES; LIPIDS;

D O I：

10.1016/0031-9422(93)85396-9

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Changes in frost resistance and contents of total carbohydrate, free proline and soluble protein in response to cold were studied in two winter cultivars of Avena sativa (cvs America and OT 220 x Omihi) with different survival capacities under field conditions. Changes in polar lipids and their constituent fatty acids were studied in cv OT 220 x Omihi. The lowest frost resistance was found in cv America, as observed in the field. Both cultivars increased their frost resistance and total carbohydrates, free proline and soluble proteins during cold acclimation. Some polar lipids (monogalactosyldiacylglycerols, digalactosyldiacylglycerols and phosphatidylinositol) increased after low temperature conditions in the more frost resistant cultivar. Unsaturated fatty acids (linoleic and linolenic) increased in some lipid fractions in cold acclimated cv OT 220 x Omihi. Genetic variability between the two cultivars and possible frost resistance mechanisms are discussed.

引用

页码：57 / 60

页数：4

共 33 条

[1]

ALBERDI M, 1991, PHYTOCHEMISTRY, V30, P3177, DOI 10.1016/0031-9422(91)83172-H

[2] INFLUENCE OF LIGHT AND DIURNAL FREEZING TEMPERATURE ON COLD HARDINESS OF WINTER-WHEAT SEEDLINGS [J].