期刊论文

Stamen morphological development and pollen viability of Ziziphus jujuba Zhongqiusucui

中文

植物生理与分子生物学学报

1671-3877

2020

56

01

16-31

10.13592/j.cnki.ppj.2019.0317

2016NK2147:湖南省重点研发项目 2018NK2043:湖南省重点研发项目 CX2016A02:中南林业科技大学研究生科技创新项目

本校为第一机构

以‘中秋酥脆枣’为试材,采用体视显微镜、扫描电子显微镜以及花粉离体培养法对不同发育时期雄蕊形态发育特性、花粉形态特征和花粉活力等进行研究.探明其相互之间对应的关系及花粉的适宜贮藏条件,旨在为提高枣树杂交育种效率提供依据.结果 表明‘中秋酥脆枣’花药呈椭圆形,表面有网状纹饰,2个花粉囊对称,纵向开裂;花粉属于小型花粉,外壁呈网状雕纹,近扁球形或近球形,极面观呈正三角形,赤道面观为椭圆形;萌发孔3个,萌发沟3裂,延伸至两极但无相连通.花粉萌发率与花粉的发育成熟度存在一定的关系.初开期、萼片展平期和花瓣花药分离期花粉萌发率较高.低温干燥贮藏花粉效果较好.

In order to provide basis for improving the efficiency of jujube hybrid breeding, we took flowers of Ziziphus jujuba Zhongqiusucui at different development stages as material, studied the stamen morphological development and pollen viability of ‘Zhongqiusucui', and found out their relationship and the best pollen collection time and storage conditions. Stereomicroscope and scanning electron microscopes (SEM) were used to study the characteristics of stamen development and pollen morphology at flowers different development stages. Pollen viabil...