Clonal structure and flowering traits of a bamboo [Phyllostachys pubescens (Mazel) Ohwi] stand grown from a simultaneous flowering as revealed by AFLP analysis
Clonal structure and flowering traits of a bamboo [Phyllostachys pubescens (Mazel) Ohwi] stand grown from a simultaneous flowering as revealed by AFLP analysis
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DOI：
10.1111/j.1365-294x.2004.02197.x
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发表时间：
2004-07-01
影响因子：
4.9
通讯作者：
Watanabe, S
中科院分区：
文献类型：
--
作者：
Isagi, Y;Shimada, K;Watanabe, S
虽然许多竹种的特征是同时开花的时间间隔长达120年，但很少有研究通过观察单个无性系的整个生命周期来揭示非常长寿的竹种的开花间隔长度。通过对毛竹1912 ~ 1979年整个生命周期的观察，确定了毛竹的花期为67年。对1930年从种子再生到1997年开始开花的一株短毛茅群落的无性系结构和开花性状进行了观察和分析。虽然这个时间间隔也是67年，但开花和不开花的秆是混合的，开花事件在群落中持续了3年。DNA样本的AFLP分析显示，不同的基因起源于之前的开花事件，每个基因都有自己的开花时间。这是首次报道(i)不同基因在具有瘦型根茎系统的大型竹种群落中混合，以及（ii）起源于单一开花事件的群落可以有一系列开花年份。
Although many bamboo species are characterized by simultaneous flowering at long intervals of up to 120 years, few studies have revealed the length of the flowering interval for very-long-lived bamboo species by observing the whole life cycle of a single clone. The flowering interval of Phyllostachys pubescens had been determined to be 67 years by means of observation through the entire life cycle from 1912 to 1979. We observed and analysed the clonal structure and flowering traits of a P. pubescens community which had regenerated from seed in 1930 and began to flower in 1997. Although this interval was again 67 years, flowering and nonflowering culms were mixed, and the flowering event lasted three years in the community. AFLP analysis of DNA samples showed distinct genets that originated from the previous flowering event and that each genet had its own flowering time. This is the first report to show that (i) different genets are mixed in a community of a large bamboo species with a leptomorphic rhizome system, and (ii) a community that originated from a single flowering event can have a range of flowering years.