Evaluating camelina genotypes for improved nitrogen use efficiency and yield with reduced nitrogen

IF 2.5 3区农林科学 Q2 AGRONOMY

Agronomy Journal Pub Date : 2026-09-04 DOI:10.1002/agj2.70527

Chengci Chen, Maral Etesami, William Franck, Chrisanne Kuester, Sooyoung Franck, Shreya Gautam, Tehmina Arshad, Chaofu Lu

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Abstract

Camelina (Camelina sativa L.) is a promising bioenergy crop with wide environmental adaptation, but nitrogen (N) requirements affect the sustainable production. Sixteen camelina genotypes were planted in 3 years in Sideny, MT at high and low N levels to evaluate nitrogen use efficiency (NUE) and yield in response to soil N. Results showed extensive variations among genotypes for plant height, seed yield, and seed oil and N concentrations at both N levels. The top-yielding genotypes were MT143 (2122 kg ha⁻¹) and MT229 (2119 kg ha⁻¹) across years and N levels. Genotypes MT144 and MT229 had the highest oil concentrations independent of N levels with an average value of 407 g kg⁻¹ for both genotypes. The nitrogen use efficiency based on oil yield (NUEOY) determined by (1) N uptake efficiency (NUpE) and (2) N transfer efficiency based on oil yield (NUtEOY) showed large genotypic variations. MT143 had the highest NUpE (2.38 kg kg⁻¹), especially at low N, and MT229 and MT144 had the highest NUtEOY (8.67 and 8.58 kg kg⁻¹, respectively). Overall, especially in low N, MT229 had the highest NUEOY (19.47 kg oil kg N⁻¹) followed by MT143 (18.12 kg oil kg N⁻¹). High broad-sense heritability (H²b) values were observed for seed yield and oil concentration, but not for seed N concentration at low N. The genotype + genotype-by-environment interaction biplots demonstrated which genotype won low and high N environments, and the analysis of means showed genotypes that had traits significantly higher or lower than the group means. The information and genetic materials may be used for further plant breeding.

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评价亚麻荠基因型对氮素利用效率和减氮产量的影响

亚麻荠（Camelina sativa L.）是一种具有广泛环境适应性的生物能源作物，但氮素需要量影响其可持续生产。在3年的时间里，在Sideny、MT高氮和低氮水平下种植16个基因型的亚麻荠，以评估其氮素利用效率（NUE）和产量对土壤氮的响应。结果表明，在两个氮水平下，不同基因型的株高、种子产量、籽油和氮浓度存在广泛差异。在不同年份和氮素水平上，产量最高的基因型为MT143 （2122 kg ha - 1）和MT229 （2119 kg ha - 1）。基因型MT144和MT229的油浓度最高，与N水平无关，两种基因型的平均油浓度均为407 g kg−1。由(1)氮素吸收效率（NUpE）和(2)氮素转移效率（NUtEOY）决定的基于产油的氮素利用效率（NUEOY）表现出较大的基因型差异。低氮条件下，MT143的NUtEOY最高（2.38 kg kg−1），MT229和MT144的NUtEOY最高（分别为8.67和8.58 kg kg−1）。总体而言，特别是在低氮条件下，MT229的NUEOY最高（19.47 kg油kg N−1），其次是MT143 （18.12 kg油kg N−1）。种子产量和含油浓度的广义遗传力（H2b）值较高，而低氮条件下的种子N浓度的广义遗传力（H2b）值不高。基因型+基因型-环境互作双图显示了基因型在低氮和高氮环境中的优势，均数分析显示基因型的性状显著高于或低于群体均数。这些信息和遗传材料可用于进一步的植物育种。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Agronomy Journal 农林科学-农艺学

CiteScore

4.70

自引率

9.50%

发文量

265

审稿时长

4.8 months

期刊介绍： After critical review and approval by the editorial board, AJ publishes articles reporting research findings in soil–plant relationships; crop science; soil science; biometry; crop, soil, pasture, and range management; crop, forage, and pasture production and utilization; turfgrass; agroclimatology; agronomic models; integrated pest management; integrated agricultural systems; and various aspects of entomology, weed science, animal science, plant pathology, and agricultural economics as applied to production agriculture. Notes are published about apparatus, observations, and experimental techniques. Observations usually are limited to studies and reports of unrepeatable phenomena or other unique circumstances. Review and interpretation papers are also published, subject to standard review. Contributions to the Forum section deal with current agronomic issues and questions in brief, thought-provoking form. Such papers are reviewed by the editor in consultation with the editorial board.