Camelina Drought Study: 54 Lines Show Different Stress Responses

Researchers in the EU-funded UNTWIST project assessed how camelina (Camelina sativa), an oilseed crop, copes with drought and high temperatures. They analysed 54 genetic lines of the plant, both under controlled laboratory conditions and in field trials across several regions of Europe. The findings matter for farmers because heatwaves and water shortages are becoming more frequent and threaten crop production.

What the study showed

Individual lines turned out to respond to stress in different ways, even though the species has relatively little genetic diversity. This suggests camelina has several mechanisms for adapting to unfavourable conditions. Choosing the right genotype may be important where drought and heat are especially severe.

Why rainfall distribution matters

Measurements by Poland's Institute of Soil Science and Plant Cultivation (IUNG) in Puławy, taken since the late 19th century, show that annual rainfall totals have stayed roughly the same over the years. Its distribution, however, has changed dramatically over the past two decades. Warming allows the atmosphere to hold more water vapour: 7% more for each 1°C, and warming has already reached 2°C. As a result, water stays in the atmosphere longer and dry spells last longer. When rain finally comes, it is often a downpour, and the water runs off into rivers instead of staying in the soil.

The role of plant breeding

Biological progress in breeding is increasingly important for yields. In a Polish survey of farmers in the 1970s, 18% named it as the most important factor, while by the end of the 20th century the figure was 52%. Breeding in the context of climate change is to be discussed at a session of the Farmers and Agribusiness Forum organised by topagrar.pl.