Evaluation of Water and Nitrogen Use Efficiency, Digestibility and Some Quantitative and Qualitative Characteristics of Forage Beet Cultivars Under Different Irrigation Methods and Nitrogen Levels

Hosseini, Lida; Maleki, Abbas; Mozafari, Afshin; Mirzaeiheydari, Mohammad; Sadeghi-Shoae, Mehdi

doi:10.1007/s10343-021-00601-2

Cited by 4 publications

(2 citation statements)

References 26 publications

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“…In recent years, many researchers have attempted to regulate the growth of sugar beet taproots by improving cultivation techniques, spraying nutrients, growth regulators, and phytohormones to enhance the yield and quality of sugar beets. For example, compared to furrow irrigation, infiltration irrigation increases the efficiency of water and nitrogen utilization in sugar beets, achieving both yield and quality improvements [4]. Spraying 100 mg•L −1 zinc and 40 mg•L −1 molybdenum on the leaves of sugar beet can balance nutrient uptake and translocation, promoting sugar beet growth and yield [5].…”

Section: Introductionmentioning

confidence: 99%

Physiological Mechanisms of BvCPD Regulation in Sugar Beet Growth

Guo,

Li,

Sun

et al. 2024

Agronomy

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Sugar beet is an important sugar crop, and its roots are mainly used for processing raw materials to produce products such as sugar, molasses, and saccharin, as well as being used as fodder for livestock. BvCPD, a key enzyme gene for brassinosteroid (BR) synthesis, regulates the development of parenchyma cells and vascular bundles by promoting BR synthesis, which promotes the expansion of the sugar beet taproot and influences the growth, development, and yield of sugar beets. This study investigated the impact of BvCPD on the physiological metabolism of sugar beet utilizing BvCPD overexpression, silent, and wild-type (WT) lines. BvCPD increased the chlorophyll content and maximum photochemical efficiency and improved the photosynthetic characteristics of sugar beet leaves. Simultaneously, BvCPD increased the rate of sugar beet taproot respiration and ATP content by enhancing the activities of phosphoglycerate kinase, alcohol dehydrogenase, sucrose synthase, and sucrose synthase catabolism. Moreover, BvCPD induced changes in the sugar fraction content, which increased the sugar yield of a single plant. In addition, BvCPD promoted water absorption, nitrogen accumulation, and lignin/cellulose synthesis activities, facilitated by increased activities of phenylalanine ammonia-lyase, cinnamyl alcohol dehydrogenase, cellulose synthase, and protein serine/threonine phosphatases, providing the requisite energy and materials for sugar beet growth. These findings not only provide a new perspective for understanding the physiological mechanisms regulating the growth of sugar beets but also provide a theoretical basis for the future improvement of sugar beet varieties through molecular breeding techniques.

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Section: Introductionmentioning

confidence: 99%

Physiological Mechanisms of BvCPD Regulation in Sugar Beet Growth

Guo,

Li,

Sun

et al. 2024

Agronomy

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“…Nitrogen is the most important nutrient limiting factor to sugar beet, which growth and taproot development directly related to N level in surrounding environment [ 30 ]. It was found that N deficiency led to low yields, but too much N reduced root quality in sugar beet [ 31 , 32 ]. Presently, there are few records on the response and potential adaptation mechanisms of sugar beet seedlings under reduced and high N environment.…”

Section: Introductionmentioning

confidence: 99%

Acclimation of sugar beet in morphological, physiological and BvAMT1.2 expression under low and high nitrogen supply

et al. 2022

PLoS ONE

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Understanding the response and tolerance mechanisms of nitrogen (N) stress is essential for the taproot plant of sugar beet. Hence, in this study, low (0.5 and 3 mmol/L; N0.5 and N3), moderate (5 mmol/L; N5; control) and high (10 and 12 mmol/L; N10 and N12) N were imposed to sugar beet to comparatively investigate the growth and physiological changes, and expression pattern of the gene involving ammonia transporting at different seedling stages. The results showed that, different from N5 which could induce maximum biomass of beet seedlings, low N was more likely to inhibit the growth of beet seedlings than high N treatments. Morphological differences and adverse factors increased significantly with extension of stress time, but sugar beet seedlings displayed a variety of physical responses to different N concentrations to adapt to N abnormal. At 14 d, the chlorophyll content, leaf and root surface area, total dry weight and nitrogen content of seedlings treated with N0.5 decreased 15.83%, 53.65%, 73.94%, 78.08% and 24.88% respectively, compared with N12; however, the root shoot ratio increased significantly as well as superoxide dismutase (SOD), peroxidase (POD), glutamine synthetase (GS) activity and malondialdehyde (MDA) and proline content, especially in root. The expression of BvAMT1.2 was also regulated in an N concentration-dependent manner, and was mainly involved in the tolerance of beet leaves to N stress, which significantly positively correlated to GS activity on the basis of its high affinity to N. It can be deduced that the stored nutrients under low N could only maintain relatively stable root growth, and faced difficulty in being transported to the shoots. Sugar beet was relatively resilient to N0.5 stress according to the mean affiliation function analysis. These results provide a theoretical basis for the extensive cultivation of sugar beet in N-stressed soil.

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