https://www.ahs.ac.cn/images/0513-353X/images/top-banner1.jpg|#|苹果
https://www.ahs.ac.cn/images/0513-353X/images/top-banner2.jpg|#|甘蓝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner3.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner4.jpg|#|灵芝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner5.jpg|#|桃
https://www.ahs.ac.cn/images/0513-353X/images/top-banner6.jpg|#|黄瓜
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https://www.ahs.ac.cn/images/0513-353X/images/top-banner9.jpg|#|观赏荷花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner10.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner11.jpg|#|月季
https://www.ahs.ac.cn/images/0513-353X/images/top-banner12.jpg|#|菊花

园艺学报 ›› 2023, Vol. 50 ›› Issue (2): 345-358.doi: 10.16420/j.issn.0513-353x.2021-0921

• 研究论文 • 上一篇    下一篇

白姜花二倍体与四倍体切花形态与显微结构变化观察

张爱玲, 涂红艳, 肖望*(), 钟晓晴, 陆秋婵, 成丽萍, 林晓萍, 麦钰玲   

  1. 广东第二师范学院生物与食品工程学院,广东高校应用生态工程技术开发中心,广州 510303
  • 收稿日期:2022-08-26 修回日期:2022-11-07 出版日期:2023-02-25 发布日期:2023-03-06
  • 通讯作者: *(E-mail:xiaowang@gdei.edu.cn)
  • 基金资助:
    广东省创新强校工程基础研究重点项目及应用研究重点项目(2018KZDXM049);广州市科技计划项目(201804010413);广州市科技计划项目(202102080244);广东第二师范学院大学生创新创业训练计划资助项目(202114278106);广东第二师范学院大学生创新创业训练计划资助项目(202114278097)

Morphology and Microstructure Characteristics of Diploid and Tetraploid Hedychium coronarium Cut Flowers

ZHANG Ailing, TU Hongyan, XIAO Wang*(), ZHONG Xiaoqing, LU Qiuchan, CHENG Liping, LIN Xiaoping, MAI Yuling   

  1. Development Center of Applied Ecology and Ecological Engineering in Guangdong Universities,College of Biology and Food Engineering,Guangdong University of Education,Guangzhou 510303,China
  • Received:2022-08-26 Revised:2022-11-07 Online:2023-02-25 Published:2023-03-06
  • Contact: *(E-mail:xiaowang@gdei.edu.cn)

摘要:

以白姜花(Hedychium coronarium)二倍体和四倍体切花为试验材料,观察其发育过程中的变化特征。结果表明:以小花花冠管发生弯颈和花瓣开始萎蔫为标志,小花发育进程可划分为6个阶段:苞裂期、初开期、盛开期、弯颈期、初萎期和萎蔫期。小花花冠管弯颈发生早于花瓣衰老,花冠管细胞衰老早于花瓣细胞。四倍体小花花冠管直径极显著大于二倍体,花冠管伸出苞片的比例显著低于二倍体。在瓶插期间,四倍体切花处于净吸水状态的时间比二倍体延长,花茎基部导管的堵塞频率变化较为平稳。四倍体花冠管弯颈发生、花冠管细胞和花瓣细胞的线粒体损伤均晚于二倍体。总体上,小花弯颈发生是白姜花切花衰老开启的标志;白姜花四倍体切花寿命显著长于二倍体,可能与四倍体具有较粗的花冠管、苞片对小花提供较强的支撑作用、花冠管和花瓣细胞的衰老推迟以及花茎具有较强的吸水能力和抗堵塞能力有关。

关键词: 白姜花, 四倍体, 切花, 衰老, 花冠管

Abstract:

With diploid and tetraploid Hedychium coronarium as test material,the developmental process of cut flowers were observed. Micrographic changes of the flower stem base,corolla tube and petals were identified by scanning and transmission electron microscopy. With the bent neck of corolla tube and initial wilting of petal as markers,the developmental process of florets was divided into six stages:bracts cracking stage,initial opening stage,blooming stage,neck bending stage,initial wilting stage,and wilting stage. Neck bending of the floret corolla tube preceded petal wilting,and the senescence of corolla tube cells arose earlier than the petal cells. The diameter of the corolla tube of the tetraploid was extremely significantly more than that of the diploid,and the ratio of the corolla tube length out of bracts to the total length of the tetraploid was significantly less than that of the diploid. During the whole vase life,the cut flowers of tetraploid were in the state of net water absorption for longer time and the basal vessel of cut flower stem were blocked more slightly than those of the diploid. The neck bending of the tetraploid floret arose later than that of the diploid,and damages of mitochondria of corolla tube and petal cells were posterior to those of the diploid. In total,neck bending of the corolla tube was the landmark for the beginning of senescence of H. coronarium floret. The significant longer longevity of the tetraploid cut flowers may be due to the thicker corolla tube and stronger support from bracts to florets,the postponed senescence of corolla tube and petal cells,and stronger water absorption and anti-blocking ability of the flower stems.

Key words: Hedychium coronarium, tetraploid, cut flower, senescence, corolla tube

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