Influence of Habitat Inside and Outside Valley on Morphology and Cytology of Sambucus Chinensis

doi:10.3969/j.issn.1007-2985.2013.02.017

Abstract

Abstract: Sambucus chinensis Lindl，a large herb widely distributed inside and outside valley in northwestern Hunan province were selected for the exploring study on the influence of on valley special-habitat cytology and plant morphology.(1) Morphological comparison of Sambucus chinensis outside valley and inside valley indicates the difference in number of unfertile flowers,long/wide of leaflets,fruit color and stipule shape,but there are no obvious differences in the number of arris,the number of lateral branches,number of pitches,length of longest internodes and number of leaflets；(2)The leaf epidermal cells are usually irregular bearing with the anticlinal walls undulate;the stomatal density of S.chinensis of inside population is obviously higher than that of the outside one,37.6±7.47 per mm2 and 26.8±5.81 per mm²,respectively;while the stomatal index of S.chinensis of outside population (31.38%) is slightly higher than that of the inside one(29.17%)；(3)Mitotic chromosome numbers of S.chinensis outside and inside valley are diploidy with 2n=36 reality,and is incompatible with previous reference.Karyotype of S.chinensis is 2B and inside population with a karyotype formula of 2n=36=16m＋14sm＋2st＋4t,and 2n=36=22m+14sm for outside population.Besides,the population inside valley appears more advanced than the outside population for their Ask values are 67.76% and 61.97%,respectively.

Key words: morphology, cytology, Sambucus chinensis, evolution, valley

XU Liang, CHEN Gong-Xi, ZHANG Jie, ZHANG Dai-Gui, ZHU Qun-Ying. Influence of Habitat Inside and Outside Valley on Morphology and Cytology of Sambucus Chinensis[J]. journal6, 2013, 34(2): 77-83.

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