Abstract
Camelina (Camelina sativa (L.) Crantz) is an emerging industrial crop from the Brassicaceae family, with its seed oil and cake being used for food, feed, and fuel applications. In this study, the relationships between economically important agronomic traits including seed yield (SY), days to maturity (DM), 1000-seed weight (TSW), seed protein content (PC), seed oil content (OC), and fatty acid composition in 136 doubled haploid (DH) camelina lines were investigated under rain-fed conditions in two consecutive years. There was prominent diversity among the studied DH lines for the agronomic traits such as seed yield, erucic acid, omega3, protein content, etc. Based on the Pearson correlation analysis of the data, SY was positively correlated with DM and OC, and negatively correlated with TSW, PC, and linolenic acid (C18:3) content. The positive relationships of the main characteristics, relevant to industrial applications, suggest the feasibility of developing new higher-yielding camelina cultivars with high seed oil content. The high seed yield of some camelina lines (DH044 and DH075) during the two growing seasons showed the potential of the lines. On the other hand, the contrasting genotypes for key traits in this study promised a favorable source to develop the superior breeding lines with higher seed yield and food/nonfood traits. Therefore, it can be concluded that the diversity of camelina DH lines traits is crucial for developing new cultivars. Furthermore, the present study reports some significant correlations among the DH lines, which may be useful for the current and future camelina breeding program.
Highlights
Camelina (Camelina sativa (L.) Crantz), a Brassicaceae family member, has a short growth period and is closely related to the model plant Arabidopsis thaliana and Brassica napus [1,2]
The relationships between economically important agronomic traits including seed yield (SY), days to maturity (DM), 1000-seed weight (TSW), seed protein content (PC), seed oil content (OC), and fatty acid composition in 136 doubled haploid (DH) camelina lines were investigated under rain-fed conditions in two consecutive years
Camelina seed yield, seed weight, maturity time, protein, and oil content and oil composition were significantly different at 0.01 level of probability in the DH and check lines under two cropping seasons (Table 1)
Summary
Camelina (Camelina sativa (L.) Crantz), a Brassicaceae family member, has a short growth period and is closely related to the model plant Arabidopsis thaliana and Brassica napus [1,2]. Due to the wide portfolio of biobased applications for oilseed crops, the development and evaluation of new genotypes, in emerging oilseed species, is an appropriate approach to achieve superior cultivars with improved oil production potential [3,4]. Camelina is an industrial crop that has recently attracted particular attention among researchers and industry worldwide, especially in Canada, the United States, and Europe [5,6,7,8,9,10,11]. Camelina seeds contain a relatively high level of proteins (23–27%) [14] making them a potential source of animal feed [15,16,17]. In addition to its food, feed, and nutritional applications, camelina oil can be used for biofuel production, in particular jet fuel [17]
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