First comparative phenetic studies of Argentinean species of Acacia (Fabaceae), using morphometric, isozymal, and RAPD approaches
First comparative phenetic studies of Argentinean species of Acacia (Fabaceae), using morphometric, isozymal, and RAPD approaches
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DOI：
10.3732/ajb.89.5.843
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发表时间：
2002-05-01
影响因子：
3
通讯作者：
Cialdella, AM
中科院分区：
文献类型：
--
作者：
Casiva, PV;Saidman, BO;Cialdella, AM
对香相思、相思树、相思树和相思树的形态多样性和遗传多样性进行了研究。macracantha、刺萼茶甲A. caven，和A.利用形态计量学、同工酶和RAPD技术对叉刺线虫进行了研究。7个同工酶系统共检测到21个位点，RAPD分析共检测到34个位点。除A. aroma和A. macracantha，两个最相似的物种。同工酶估计的遗传变异水平高于RAPD分析。形态特征在种间差异极显著。aroma和A. macracantha仅通过刺的长度来区分。从同工酶数据获得的表型与形态学数据一致。基于等位基因频率的RAPD表型图仅在种内水平上与形态学和同工酶方法一致，而基于Nei和Li相似性度量的RAPD表型图与同工酶和形态学数据构建的表型图一致。A. aroma和A. macracantha的研究结果使人们对它们之间的关系产生了疑问。
Morphological and genetic diversity among Acacia aroma, A. macracantha, A. caven, and A. furcatispina were studied with morphometric, isozymal, and RAPD approaches. The analysis of seven isozyme systems revealed 21 loci, and RAPD analysis showed 34 loci. Most of these loci allowed us to differentiate the species, with the exception of A. aroma and A. macracantha, the two most similar species. The levels of genetic variability estimated by isozymes were higher than those obtained from RAPD analyses. Morphometric characters showed highly significant differences among the species, although A. aroma and A. macracantha are differentiated only by thorn length. The phenogram obtained from isozyme data is consistent with morphological data. The RAPD phenogram based on allelic frequencies showed agreement with morphological and isozymal approaches only at the intraspecific levels, while the RAPD phenogram based on Nei and Li's similarity measures agreed with the phenograms constructed from isozyme and morphological data. High similarities and high indirect gene flow were found between A. aroma and A. macracantha, results that call the relationship between them into question.