期刊论文

Analysis of the mechanism of anther dehiscence in rice based on morphological characteristics

中文

湖南农业大学学报(自然科学版)

1007-1032

2018

44

5

453-458

10.13331/j.cnki.jhau.2018.05.001

国家重点研发计划项目（2017YFD0301507）； 湖南农业大学作物学开放基金项目（ZWKF201314）；

本校为第一机构

以野败型雄性不育系V20A及其保持系V20B为核心材料，应用荧光显微、半薄切片和扫描电子显微镜技术，比较分析了不育与可育水稻花药及花丝的形态特征差异。结果表明：正常可育水稻花药气孔带（IMS2）分布的常开状气孔及其角质化表皮细胞保障了花药的正常失水，失水导致快速伸长的花丝中形成“气塞”，进而形成反向拉扯开裂带（IMS1）两侧纤维层的裂药“驱动力”，纤维层细胞内外壁非均匀增厚决定裂药受力方向，而花药表面纤维层细胞次生增厚的“V”形分布特征决定了花药开裂的位置顺序。

In order to further elucidate the morphological process mechanism of anther dehiscence in rice,the difference of morphological characteristics of anthers and filaments between the wild type male sterile line V20A and its maintainer line V20B were detailed compared by using fluorescence microscopy,semi thin sectioning and scanning electron microscope. Results indicated that the normally open stomata distributed in intermicrosporangia 2 (IMS2) and the keratinized epidermal cells of anther guaranteed normally water loss,the “gas plug” in the rap...