植物研究 ›› 2025, Vol. 45 ›› Issue (6): 919-927.doi: 10.7525/j.issn.1673-5102.2025.06.009
陈蕊红1(
), 李坤2, 张紫楠2, 张思源2, 何晓华3, 刘汝懿1, 曹文静1, 张静1
收稿日期:2025-06-03
出版日期:2025-11-20
发布日期:2025-11-27
通讯作者:
陈蕊红
E-mail:chenruihong@nwafu.edu.cn
作者简介:陈蕊红(1975—),女,博士,副教授,主要从事枣树遗传育种研究。
基金资助:
Ruihong CHEN1(
), Kun LI2, Zinan ZHANG2, Siyuan ZHANG2, Xiaohua HE3, Ruyi LIU1, Wenjing CAO1, Jing ZHANG1
Received:2025-06-03
Online:2025-11-20
Published:2025-11-27
Contact:
Ruihong CHEN
E-mail:chenruihong@nwafu.edu.cn
摘要:
为了探究枣(Ziziphus jujuba)自交不亲和花粉与柱头相互作用的特征,该研究比较了不同样品干燥方法对‘骏枣’(‘Junzao’)花柱样品的影响,并对扫描电镜的加速电压及工作距离等参数进行系统优化。结果表明:采用CO₂临界点干燥法进行骏枣花柱制备,在扫描电镜工作距离为5.4~10.8 mm、加速电压为3.0 kV的扫描电镜优化条件下,可获得高清晰度、高分辨率的枣柱头乳突细胞微观图像。基于优化后的扫描电镜技术体系,该研究对‘骏枣’花柱微观结构、‘骏枣’自交(‘骏枣’ב骏枣’)和异交(‘骏枣’ב清涧酸枣’(‘Qingjian Suanzao’))后的花粉与柱头相互作用进行观察。结果表明,‘骏枣’花柱为“二叉”型,柱头表面由乳突细胞群组成,单个乳突细胞直径为10~18 μm。‘骏枣’自交后花粉在柱头的黏附、水合、萌发和生长过程与异交后花粉在柱头生长特性无明显异常。进一步应用荧光显微镜观察发现,‘骏枣’自交后花粉管生长至花柱通道1/2处停滞并表现出膨大和卷曲等现象,而异交后花粉管则生长至花柱底部,表明枣具有典型的配子体自交不亲和特性。该研究阐明了枣自交不亲和花粉与柱头识别及花粉管生长的动态特征,对枣生殖生物学研究及指导杂交育种实践具有重要的科学价值和应用意义。
中图分类号:
陈蕊红, 李坤, 张紫楠, 张思源, 何晓华, 刘汝懿, 曹文静, 张静. 枣自交及异交花粉与柱头互作特性[J]. 植物研究, 2025, 45(6): 919-927.
Ruihong CHEN, Kun LI, Zinan ZHANG, Siyuan ZHANG, Xiaohua HE, Ruyi LIU, Wenjing CAO, Jing ZHANG. Characteristics of Pollen-Stigma Interaction in Self-Pollination and Cross-Pollination of Ziziphus jujuba[J]. Bulletin of Botanical Research, 2025, 45(6): 919-927.
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