Zhao Zhe, Wang Sheliang, Wang Youqiang, Xu Fangsen
College of Agriculture, Henan University of Science and Technology, Luoyang, China.
National Key Laboratory of Crop Genetic Improvement, Microelement Research Centre, Huazhong Agricultural University, Wuhan, China.
J Sci Food Agric. 2025 Apr 25. doi: 10.1002/jsfa.14304.
The occurrence of boron (B) deficiency in Brassicaceae crops has increased in recent years. Inappropriate application of B with other nutrients often exacerbates symptoms of B deficiency. The aim of this study was to explore the interactive effects of B and phosphorus (P) on the B deficiency symptoms of rapeseed (Brassica napus L.). Two rapeseed cultivars ('W10' and 'ZS11') were treated with two B application rates (low and high B) and three P application rates (low, medium, and high P), and the growth parameters (root morphology, B absorption and distribution, and the P/B ratio) were examined in pot and hydroponic experiments.
Under low B conditions, plants showed severely reduced root and shoot growth but it was greatly improved when supplemented with medium P supply. Further analysis revealed that high P combined with low B decreased the B concentration of newly initiated leaves and seeds, and increased the P/B ratio in plants compared with the medium P and low B combination, resulting in the aggravation of B deficiency of rapeseed. In comparison with the B-inefficient cultivar 'W10', the B-efficient cultivar 'ZS11' had superior growth and seed yield under low B conditions. Furthermore, 'W10' and 'ZS11' displayed significant differences in the response of the interaction between B and P to plant P/B ratio and root morphological parameters, which may reflect distinct genotype characteristics.
The findings emphasize the importance of interactions between B and P in the growth and yield formation of rapeseed in B-deficient soils, as imbalanced B and P supply can exacerbate B deficiency symptoms in rapeseed. © 2025 Society of Chemical Industry.
近年来十字花科作物中硼（B）缺乏的情况有所增加。硼与其他养分的不当施用常常会加剧硼缺乏症状。本研究的目的是探讨硼（B）和磷（P）对油菜（Brassica napus L.）硼缺乏症状的交互作用。用两种硼施用量（低硼和高硼）和三种磷施用量（低磷、中磷和高磷）处理两个油菜品种（‘W10’和‘ZS11’），并通过盆栽和水培实验检测生长参数（根系形态、硼吸收与分配以及磷/硼比率）。
在低硼条件下，植株的根和地上部生长严重受限，但补充中磷供应后有显著改善。进一步分析表明，与中磷和低硼组合相比，高磷与低硼结合降低了新长出叶片和种子中的硼浓度，并提高了植株中的磷/硼比率，导致油菜硼缺乏加剧。与硼低效品种‘W10’相比，硼高效品种‘ZS11’在低硼条件下生长和种子产量更优。此外，‘W10’和‘ZS11’在硼与磷交互作用对植株磷/硼比率和根系形态参数的响应方面存在显著差异，这可能反映了不同的基因型特征。
研究结果强调了硼与磷的交互作用在缺硼土壤中油菜生长和产量形成中的重要性，因为硼和磷供应失衡会加剧油菜的硼缺乏症状。© 2025化学工业协会
