Genetic variation and heritability of agro-morphological and phytochemical traits in Iranian saffron (Crocus sativus L.) populations
Genetic variation and heritability of agro-morphological and phytochemical traits in Iranian saffron (Crocus sativus L.) populations
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DOI：
10.1016/j.indcrop.2009.12.010
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发表时间：
2010-03-01
影响因子：
5.9
通讯作者：
Jamshidi, A. H.
中科院分区：
文献类型：
--
作者：
Baghalian, K.;Sheshtamand, M. Shabani;Jamshidi, A. H.
藏红花因其独特的香气、味道、颜色和药用特性而受到高度重视。众所周知，伊朗是最重要的藏红花生产国之一，但伊朗藏红花的遗传变异目前尚不清楚。我们研究的主要目标是：（1）评估伊朗藏红花种群的表型多样性； (2) 比较来自不同生态区的种群之间的植物化学成分含量； (3) 确定植物化学成分含量与形态性状之间可能的相关性； (4) 确定用于克隆选择程序的产量相关性状，以及 (5) 估计所评估性状的广义遗传力 (h(b)(2))。在这项研究中，采用组合方差分析来评估两年内伊朗的八个番红花种群。调查性状为单株叶数、叶长、小区花数、小区干柱头重、佛焰苞数以及藏红花素、苦藏红花素和藏红花醛的含量。统计分析表明，群体对除叶长和佛焰苞数以外的大多数形态参数均具有显着影响。它对所有植物化学成分也有显着影响。邓肯的多重范围测试表明，大多数评估的性状在人群中存在显着差异。简单相关分析表明，干柱头重与叶数、花数、苦藏红花素和藏红花醛呈显着正相关（r分别为0.954、0.998、0.830和0.881）。花相关性状的广义遗传力估计值较高 (h(b)(2) = 0.76 - 0.99）。聚类分析没有揭示多样性模式与地理起源之间的明确关系。 (C) 2010 Elsevier B.V. 保留所有权利。
Saffron is highly valued for its unique aroma, taste, colour and medicinal properties. Iran is known, as one of the most important saffron producing countries but the genetic variability present in crocus in Iran is currently unknown. The main objectives of our research were: (1) evaluate phenotypic diversity among Iranian saffron populations; (2) compare phytochemical content between populations originating from different ecological areas: (3) determine possible correlations between phytochemical content and morphological traits; (4) identify yield-related traits for use in clonal selection programs and (5) estimate the broad sense heritability (h(b)(2)) for the traits evaluated. In this study a combined analysis of variance was used to evaluate eight Iranian populations of Crocus sativus over a two-year period. The investigated characters were leaf number per plant, leaf length, flower number per plot, dry stigma weight per plot, spathe number and the content of crocins, picrocrocin and safranal. Statistical analysis showed that population had significant effect on most morphological parameters except leaf length and spathe number. Also it had significant effect on all phytochemical contents. Duncan's multiple range tests showed that populations were significantly different for most evaluated traits. Simple correlation analysis showed that dry stigma weight had significant and positive correlation with leaf number, flower number, picrocrocin and safranal (r=0.954, 0.998, 0.830 and 0.881, respectively). The estimates of broad sense heritability were higher for flower related traits (h(b)(2) = 0.76 - 0.99). Cluster analysis did not reveal a clear relationship between diversity pattern and geographical origin. (C) 2010 Elsevier B.V. All rights reserved.