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宜兴苦竹开花结实首次记录
张韫1, 张玲2, 蓝芳荣3, 朱志勇1, 陈晓东1, 郭起荣4,5
1.国际竹藤中心, 国家林业局竹藤科学与技术重点开放实验室, 北京 100102;2.博爱县林业局, 河南博爱 454450;3.上犹县林业局, 江西上犹 341200;4.1. 国际竹藤中心, 国家林业局竹藤科学与技术重点开放实验室, 北京 100102;5.2. 南京林业大学, 南方现代林业协同创新中心, 南京 210037
摘要:  观察了宜兴苦竹(Pleioblastus yixingensis)开花习性,描述了其花序的形态结构。野外调查观察到宜兴苦竹雄蕊个数3、4、5、6均有,以3为主,补充丰富了苦竹属雄蕊3的数据。硼不是花粉萌发的必需元素。花粉浅染型败育,萌发率仅有5.11%,是宜兴苦竹结实率低的重要原因。河南、江苏、浙江、安徽等地的宜兴苦竹2017年同步开花,结实率不足10%。
关键词:  宜兴苦竹  苦竹属  花粉  败育  结实
DOI:10.11926/jtsb.3792
分类号:
基金项目:中央级公益性科研院所基本业务费(1632016009);国家林业局项目(2015001)资助
The First Record of Flowering and Bearing about Pleioblastus yixingensis (Bambusoideae, Poaceae)
ZHANG Yun1, ZHANG Ling2, LAN Fang-rong3, ZHU Zhi-yong1, CHEN Xiao-dong1, GUO Qi-rong4,5
1.Key Laboratory of Bamboo and Rattan Science and Technology of State Forestory Adminstration, International Center for Bamboo and Rattan, Beijing 100102, China;2.Forestry Burean of Boai County, Boai 454450, Henan, China;3.Forestry Bureau of Shangyou County, Shangyou 454450, Jiangxi, China;4.1. Key Laboratory of Bamboo and Rattan Science and Technology of State Forestory Adminstration, International Center for Bamboo and Rattan, Beijing 100102, China;5.2. Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China
Abstract:  The flowering habit of Pleioblastus yixingensis was observed at first, and the inflorescence morphological structure was described. Genus Pleioblastus has 3 stamens according to the Flora Reipublicae Popularis Sinicae, but the number of stamens with 3, 4, 5 or 6 were observed during field investigation, of which 3 was the majority. These enriched the data of Pleioblastus. The boron was not necessary element during pollen germination. The pollen was stained aborted with germination rate only 5.11%, which was an important reason of low setting of P. yixingensis. Pleioblastus yixingensis in Henan, Jiangsu, Zhejiang, Anhui was synchronized flowering in 2017 with fruiting rate less than 10%.
Key words:  Pleioblastus yixingensis  Pleioblastus  Pollen  Abortion  Setting

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