'绿竹' 附近有语法错误。 '绿竹' 附近有语法错误。 字符串 ' order by num ' 后的引号不完整。 ‘霞早'绿竹花形态特征及花药发育的组织学观察-《南京林业大学学报(自然科学版)》


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‘霞早'绿竹花形态特征及花药发育的组织学观察
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《南京林业大学学报(自然科学版)》[ISSN:1000-2006/CN:32-1161/S]

卷:
43
期数:
2019年02期
页码:
007-13
栏目:
研究论文
出版日期:
2019-03-30

文章信息/Info

Title:
Anther development and floral morphology characteristics of Bambusa oldhami ‘Xia Zao' ZSX
文章编号:
1000-2006(2019)02-0007-07
作者:
林树燕12傅华君13万雅雯13张时兴4朱如基4王福升12丁雨龙12*
(1. 南京林业大学,南方现代林业协同创新中心,江苏 南京 210037; 2. 南京林业大学竹类研究所江苏 南京 210037; 3. 南京林业大学生物与环境学院,江苏 南京 210037; 4. 福建省霞浦县绿优农业开发有限公司,福建 宁德 352100)
Author(s):
LIN Shuyan12FU Huajun13 WAN Yawen13 ZHANG Shixing4 ZHU Ruji4 WANG Fusheng12 DING Yulong12*
(1. Co-Innovation Center for the Sustainable Forestry in Southern China, Nanjing Forestry University,Nanjing 210037, China; 2.Bamboo Research Institute, Nanjing Forestry University, Nanjing 210037, China; 3. College of Biology and the Environment, Nanjing Forestry University, Nanjing 210037, China; 4. Lüyou Agricultural Development Limited Company, Xiapu County, Fujian Province, Ningde 352100,China)
关键词:
Keywords:
分类号:
S718
DOI:
10.3969/j.issn.1000-2006.201711031
文献标志码:
A
摘要:
【目的】研究‘霞早'绿竹(Bambusa oldhami ‘Xia Zao' ZSX)开花形态,分析其不结实的原因。【方法】以福建省霞浦县开花‘霞早'绿竹为材料,野外观察小花的开放动态,并以石蜡切片法研究花药的发育过程。【结果】‘霞早'绿竹由营养生长转为生殖生长时,开花植株新生叶片较小。开花‘霞早'绿竹竹秆及主次花枝各节上大都着生多枚簇生小穗。小穗上各小花的分化和发育是按基部到顶部的顺序依次进行的。‘霞早'绿竹每朵小花有6枚花药,每个花药有4个花粉囊。花药壁发育属于单子叶型,花药壁的4层结构在小孢子母细胞时期发育完全。从雄蕊原基开始形成到小孢子母细胞,未见结构和发育异常; 但从小孢子母细胞减数分裂到花粉粒成熟的各个发育阶段,小孢子结构及绒毡层出现发育异常。【结论】研究明确了‘霞早'绿竹小穗中各小花的发育进程是由下而上发育的,开花特性以及花粉发育异常是其不结实的主要原因之一。
Abstract:
【Objective】 Bamboo is a plant with special flowering characteristics. Woody bamboos have a long vegetative growth cycle and its flowering period ranging from decades to more than hundreds of years. The flower morphology and development of microspore and male gametes of Bambusa oldhami ‘Xia Zao' ZSX were studied to elucidate the mechanism of pollen abortion with the help of combination of exterior morphology and interior cytological structure. 【Method】 The flowers of B. oldhami ‘Xia Zao' ZSX were collected from Xiapu County, Fujian Province. The flower morphology and anther development were studied by field observation and paraffin sectioning, respectively. 【Result】 Flowering bamboo plants grow new smaller leaves when compared with the vegetative plants. They may bear many clustered spikelets on each node of culms and branches. The differentiation of florets on the same spikelet occurs in sequence from the base to the top. Each flower has 6 anthers and each anther has 4 pollen sacs. The development type of anther wall is monocotyledonous type. The 4-layer anther walls are fully developed at the microspore mother cell stage. No structural and developmental abnormalities were observed during the process from the primordium to the microspore mother cell. However, after that, the microspore and tapetum showed abnormal structure. 【Conclusion】We found that the development of florets in the same spikelet follows a bottom-up process, and the reason for the absence of seeds in B. oldhami ‘Xia Zao' ZSX may be due to flowering characteristics and abnormal pollen development.

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更新日期/Last Update: 2019-03-30