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首页> 外文期刊>Genetic Resources and Crop Evolution >'Bracatinga' (Mimosa scabrella Bentham), a multipurpose tree growing in Southern Brazil: chromosome number and genetic variation
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'Bracatinga' (Mimosa scabrella Bentham), a multipurpose tree growing in Southern Brazil: chromosome number and genetic variation

机译：巴西南部生长的多用途树“ Bracatinga”（含羞草边沁）：染色体数和遗传变异

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摘要

Mimosa scabrella Bentham, popularly known as "bracatinga" in Brazil, is a very important multipurpose tree especially in the southern region of the country, where it occurs naturally in plant associations called "bracatingais". The species is presently in danger of losing genetic variability as it normally occurs in regions subjected to intense urbanization, industrialization, agriculture and cattle raising. Aiming at broadening the knowledge about the species we have investigated cytogenetic characteristics and genetic diversity among natural populations. The results show that all populations are tetraploid (2n = 4x = 52) and that there is a high genetic diversity among the populations. There is still time to avoid genetic erosion of M. scabrella if the areas where the species occurs are protected.
机译：含羞草边沁（Mimosa scabrella Bentham）在巴西俗称“ bracatinga”，是一种非常重要的多用途树，尤其是在该国南部地区，它天然存在于被称为“ bracatingais”的植物协会中。由于该物种通常发生在城市化，工业化，农业和养牛业密集的地区，因此目前存在丧失遗传变异性的危险。为了拓宽对物种的了解，我们研究了自然种群之间的细胞遗传学特征和遗传多样性。结果表明，所有种群均为四倍体（2n = 4x = 52），并且种群之间具有很高的遗传多样性。如果该物种发生的地区受到保护，那么仍然有时间避免死灰螺的遗传侵蚀。

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