Systematics Of Thamnocalaminae And Its Allied Species

There are approximately80-90genera and about1,000-1,500bamboo species in the world. Their natural range includes all continents except Antarctica and Europe, from lowlands up to about4,000m in altitude. Biogeographically, bamboos can be categorized into two groups, tropical or temperate. In woody bamboos, however, molecular evidence has suggested that they could be divided into at least three major lineages. These can be defined as temperate, palaeotropical, and neotropical. The taxonomy of Bambusoideae is in a state of flux and phylogenetic studies are required to help resolve systematic issues. Previous investigation into phylogenetic relationships of the temperate bamboos revealed that The temperate bamboos (tribe Arundinarieae) are notorious for being taxonomically extremely difficult. In the Phylogenetic analysis. For claring some phylogenetic issue of the tribe Arundinarieae we utilize a total of53morphologic characters of both generative organs and nutritoriums withch stem from the accurate meterage. Use of a masses of method of cladistic analysis, but does not reject paraphyletic group which is considered (traditional taxonomy) have its status in the classification system. The main results were as follows:For the division of Gaoligongshania, the namer of the genus (DZ LI,1993)that published before believes that Gaoligongshania is due to the limited occurrence of inflorescence, shrubby growth, large leaves, auricles developed significantly single branch with the main pole near thick, sheath sheath persistent, ovary smooth hairless characteristic traits, should be Indocalamus has a certain kinship. However, due to the coarse type of underground stems short necked, stalk clusters or epiphytic, panicles large, stigma and other instructions and Indocalamus was significantly different, more original. Observation of the type of underground stems, the Gaoligongshania is very close to Subtrib. Thamnocalaminae, which also has been the strong support of molecular systematics. The inflorescence of Gaoligongshania carry out large scale features of the leaves but also tend to trend close to Yushan Phyllostachys. But each section of the latter branching13, and significantly higher than the main lever for fine underground stems of sympodial dispersal type more evolved than Gaoligongshania, these indicate that the particularity of the Gaoligongshania, especially taking into account the the coexistence of ancestral derivative phenomenon, which may further illustrate Thamnocalaminae within the subfamily there are many times in parallel or even reverse evolution may, the Gaoligongshania is this series of long evolution of the intermediates.Over all the entire Subtrib. Thamnocalaminaeis still as monophyletic. Ampelocalamus is located higher than the base position, Thamnocalaminae is with the bamboo is a life form of consistency in the stalk connection with the distinction between Thamnocalaminae the case of key morphological traits of bamboo genera is inflorescence with raw mode and Buddhism flame The number of bud. The sickle sequence bamboo belong Drepanostachyum and Fagesia with Chimonocalamus together constitute one and the paraphyletic, taking into account the original traits of the squid have no leaves and stalks for climbing like, sickle sequence bamboo is is closer to the root of the tree should be better than the fragrant bamboo, but not enough case of a single Department. Access and traditional taxonomy is Yushania and Gaoligongsgania, belong Gaoligongsgania and not from bamboo,and with F. yunnanensis together make up a group within the genus of bamboo, more evolved performance. There are almost up to3/4species that have not been included in this cladistic analysis range, the lack of a large number of taxa cause there may be significant deficiencies in the system tree in the evaluation of bamboo is its internal branch, but Yushania and Gaoligongsgania whether should be incorporated into the bamboo genus is worth noting, especially in the previous analysis had a similar conclusion. ITS sequences on the results confirmed the hanging bamboo is located in the base of the Subtrib. Thamnocalaminae, sickle sequence of bamboo genera and fragrant bamboo is a more primitive than Subtrib. Thamnocalaminae of traditional taxonomy conclusion, but at the same time tend to Yushania the case of and F. yunnanensis and other bamboo species together constitute a monophyletic. Yushania many characteristics from the morphological point of view, is more evolved than the F.yunnanensis. which is a bamboo relative evolution within the genus, such as inflorescence type, number of style important traits, the traditional taxonomy while straw scattered and stalk morphology Yushania from bamboo is spun off and bamboo belong together constitute Department. It should be emphasized that the analysis of the Yushania Y., Brevipaniculata Yi and Asbestos Yushania Y. the Lineolata Yi as a representative of, is generally believed that both species belong to Yushania is more at the base that is close to the genus, and Gaoligongshania properly like an intermediateproduct among the a series of endless evolvement.