Nilkanta Heikrujam, Amom Thoungamba, Tikendra Leimapokpam, Rahaman Hamidur, Nongdam Potshangbam
Department of Biotechnology, Manipur University, Canchipur, Imphal, Manipur 795003, India.
Scientifica (Cairo). 2017;2017:3757238. doi: 10.1155/2017/3757238. Epub 2017 Jan 10.
(Roxb.) Kurz is an economically important bamboo of North-East India experiencing population depletion in its natural habitats. Genetic variation studies were conducted in 7 populations sampled from 5 districts of Manipur using ISSR molecular markers. The investigation was carried out as a primary step towards developing effective conservation strategies for the protection of bamboo germplasm. ISSR marker analysis showed significant level of genetic variation within the populations as revealed by moderately high average values of Nei's genetic diversity ( 0.1639), Shannon's diversity index ( 0.2563), percentage of polymorphic bands (PPB 59.18), total genetic variation ( 0.1961), and genetic diversity within population ( 0.1639). The study also divulged a high genetic variation at species level with Shannon's diversity index (), Nei's genetic diversity (), and percentage of polymorphic band (PPB%) recorded at 0.3218, 0.1939, and 88.37, respectively. Genetic differentiation among the populations () was merely 19.42% leaving 80.58% of genetic variation exhibited within the populations. The low genetic diversity between populations was consistent with AMOVA. The low genetic differentiation among populations coupled with existence of significantly high genetic diversity at species level indicated the urgent necessity of preserving and protecting all the existing natural bamboo populations in the region.
(Roxb.) Kurz是印度东北部一种具有重要经济价值的竹子,其天然栖息地的种群数量正在减少。利用ISSR分子标记对从曼尼普尔邦5个区采集的7个种群进行了遗传变异研究。该调查是制定有效保护策略以保护竹种质资源的第一步。ISSR标记分析表明,种群内存在显著的遗传变异,Nei氏遗传多样性(0.1639)、香农多样性指数(0.2563)、多态性条带百分比(PPB 59.18)、总遗传变异(0.1961)和种群内遗传多样性(0.1639)的平均值较高,表明了这一点。该研究还揭示了物种水平上的高遗传变异,香农多样性指数()、Nei氏遗传多样性()和多态性条带百分比(PPB%)分别为0.3218、0.1939和88.37。种群间的遗传分化()仅为19.42%,80.58%的遗传变异存在于种群内。种群间低遗传多样性与AMOVA结果一致。种群间低遗传分化以及物种水平上存在显著高遗传多样性表明,迫切需要保护该地区所有现存的天然竹林种群。