Articles
INCREASING GAMMA LINOLENIC ACID IN EVENING PRIMROSE GROWN UNDER HOT TEMPERATURES BY BREEDING EARLY CULTIVARS
Article number
330_28
Pages
219 – 226
Language
Abstract
The effect of temperature regimes on the fatty acid composition of evening primrose (Oenothera lamarckiana) seeds was studied under controlled conditions during various developmental stages of seed maturation.
Under high temperatures a substantial reduction of gamma linolenic acid (GLA) and an increase of oleic acid content of the seeds were observed.
Exposing the plant to alternate temperatures at various periods revealed that the most sensitive stage to high temperatures is at the 30–40 days after anthesis.
Based on these findings, the breeding of cultivars suitable for warm climates was directed towards the development of early maturing lines, avoiding the high temperatures prevailing during seed maturation.
This strategy was indeed adopted and proved successful.
Under high temperatures a substantial reduction of gamma linolenic acid (GLA) and an increase of oleic acid content of the seeds were observed.
Exposing the plant to alternate temperatures at various periods revealed that the most sensitive stage to high temperatures is at the 30–40 days after anthesis.
Based on these findings, the breeding of cultivars suitable for warm climates was directed towards the development of early maturing lines, avoiding the high temperatures prevailing during seed maturation.
This strategy was indeed adopted and proved successful.
Authors
A. Levy, D. Palevitch, C. Ranen
Keywords
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