A case of gregarious flowering in bamboo, dominated lowland forest of Assam, India: phenology, regeneration, impact on rural economy, and conservation

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• 作者：Hemen Sarma (1)
  Ananta Mohan Sarma (2)
  Aniruddha Sarma (3)
  Souravjyoti Borah (1)
  
• 关键词：bamboo ; famine ; flowering ; Indo ; Burma hotspot ; rural economy ; viviparous germination
• 刊名：Journal of Forestry Research
• 出版年：2010
• 出版时间：December 2010
• 年：2010
• 卷：21
• 期：4
• 页码：409-414
• 全文大小：1532KB
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• 作者单位：Hemen Sarma (1)
  Ananta Mohan Sarma (2)
  Aniruddha Sarma (3)
  Souravjyoti Borah (1)
  
  1. Centre for Advanced Studies in Botany, School of Life Science, North-Eastern Hill University, Shillong, India, 793022
  2. Department of Botany, Bajali College, Pathsala, Assam, 7813 25, India
  3. Department of Biotechnology, Pandu College, Guwahati, Assam, India
  

文摘

We recorded gregarious flowering of three bamboo species viz. Bambusa arundinacea, Bambusa tulda and Melocanna baccifera during rainy season from early March to late May, 2008 at lowland forest of Bajali area of Indo-Burma hotspot region. A regular method of field sampling of various forest types was used to map the bamboo species in Assam, India. Moreover, people’s perception on bamboo blooming was investigated at 17 sample plots covering 258 respondents inhabiting at the site at an average of 15 in each plots. A floral clump (inflorescence) emerged and developed into a giant panicle comprising of numerous florets. Two types of seeds viz. bacca and caryopsis were recorded in different species. Viviparous germination was noticed in few bacca seeds produced by M. baccifera and this has unusual occurrence in bamboo. Seed viability test shows that 75% caryopsis seeds were viable; these seeds had the potential of germination and can be used for mass regeneration. Most local respondents believe that bamboo flowering can result in population explosion of rodent, therefore, they think bamboo flowering is positively correlated with famine. This traditional belief results in massive destruction of bamboo clumps, which significantly impacts on rural economy.