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

印度阿萨姆帮丘陵林地优势种竹子群聚开花情况:物候学、再生、对农村经济的影响以及保护(英文)

作　　者：Hemen Sarma Ananta Mohan Sarma Aniruddha Sarma Souravjyoti Borah 

机构地区：[1]Centre for Advanced Studies in Botany,School of Life Science,North Eastern Hill University [2]Department of Botany,Bajali College [3]Department of Biotechnology,Pandu College

出　　处：《Journal of Forestry Research》2010年第4期409-414,521,共7页林业研究（英文版）

摘　　要：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. bacea 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 regen- eration. Most local respondents believe that bamboo flowering can result in population explosion of rodent, therefore, they think bamboo flower- ing is positively correlated with famine. This traditional belief results in massive destruction of bamboo clumps, which significantly impacts on rural economy.2008年3-5月记录了印度-缅甸的Bajali地区丘陵林地内印度簕竹(Bambusa arundinacea)、马甲竹(Bambusa tulda)、梨果竹(Melocanna baccifera)群聚开花情况。采用常规野外取样法绘制了印度北部阿萨姆帮竹类品种的位置。还调查了17块取样地的258位居民对竹子开花的看法。本研究出现了一个花丛并发展成为含有许多小花的大的圆锥花序。这三个竹子品种中,有浆果和颖果两个种子类型。在梨果竹林中发现几粒胎生萌发的种子,这种现象在竹类植物中并不常见。种子活力试验结果表明,75%的颖果种子具有种子活力,这些种子具有萌发潜力,可用于竹子大量再生。多数当地居民认为竹子开花会引起啮齿动物大爆发,并认为竹子开花会带来饥荒。因此,当地居民大量毁坏竹丛,这严重地影响了农村经济。

关 键 词：BAMBOO FAMINE FLOWERING lndo-Burma hotspot rural economy viviparous germination 

分 类 号：S795[农业科学—林木遗传育种] Q945[农业科学—林学]