[1]姚玉波,程莉莉,刘鑫磊,等.外源细胞分裂素对磷胁迫下大豆光合产物积累及根瘤酶活性的影响[J].大豆科学,2025,(03):103-110.[doi:10.11861/j.issn.1000-9841.2025.03.0103]
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外源细胞分裂素对磷胁迫下大豆光合产物积累及根瘤酶活性的影响

《大豆科学》[ISSN:1000-9841/CN:23-1227/S] 卷: 期数: 2025年03期 页码: 103-110 栏目: 出版日期: 2025-05-20
Title:
Effects of Exogenous Cytokinin on Photosynthetic Products Accumulation and Enzyme Activity in Soybean Nodules under Phosphorus Stress
作者:
姚玉波1; 程莉莉2; 刘鑫磊1; 薛永国1; 唐晓飞1; 曹旦1; 何雯瑾1; 栾晓燕1
1.黑龙江省农业科学院 大豆研究所，黑龙江 哈尔滨 150086；2.黑龙江省农业科学院 经济作物研究所，黑龙江 哈尔滨 150086
关键词:
大豆; 磷胁迫; 细胞分裂素; 光合产物积累; 酶活性
DOI:
10.11861/j.issn.1000-9841.2025.03.0103
摘要:
为解析外源细胞分裂素对磷胁迫下大豆光合产物积累和根瘤酶活性的影响，使用1.0×10-9 mol·L-1反式-玉米素浸泡绥农14种子后进行沙培。于V3~R5期取样，分析磷胁迫对大豆株高、干重、根瘤数量、磷素积累量、根瘤中果糖含量、蔗糖含量、淀粉含量、紫色酸性磷酸酶和过氧化物酶活性的影响。结果表明：V3~R5期施加外源细胞分裂素能够促进大豆光合产物的积累，随着处理时间的延长，显著提高磷胁迫下大豆株高、地上部分干重、根干重、根瘤干重、地上部分磷素积累量、根部磷素积累量、根瘤磷素积累量和根瘤数量，最大增幅分别达到37.88%、54.11%、47.19%、164.71%、86.86%、67.13%、229.63%和311.01%；显著提高根瘤中果糖、蔗糖和淀粉含量，最大增幅分别达到51.80%、120.81%和58.02%；显著降低根瘤中紫色酸性磷酸酶和过氧化物酶活性，最大降幅分别为18.40%和27.34%。结果说明外源细胞分裂素通过增加光合产物积累、降低过氧化物酶活性促进根瘤形成和发育，提高大豆对磷胁迫的抗性。结果为解析外源细胞分裂素调控磷胁迫下大豆生长，光合产物和养分的积累和运输，及提高根瘤固氮作用提供理论依据和参考。

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更新日期/Last Update: 1900-01-01