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引用次数: 0
鹰嘴豆驯化性状的遗传基础
鹰嘴豆(Cicer arietinum)是人类饮食中蛋白质和纤维的主要来源。鹰嘴豆也是许多种植系统的重要组成部分,因为鹰嘴豆能为谷物和油籽作物提供抗病能力,并能与土壤细菌相互作用固氮,提高土壤肥力。鹰嘴豆作物的产量受到疾病和非生物胁迫的影响。然而,驯化鹰嘴豆基因库的狭窄阻碍了抗逆性更强的鹰嘴豆品种的开发。澳大利亚本特利科廷大学作物与疾病管理中心的一个研究小组通过将驯化鹰嘴豆品种与不同的野生鹰嘴豆品种杂交,产生了一些种群。他们利用这些种群绘制了与重要农艺性状(包括开花时间和生长习性)相关的基因组区域图谱,并确定了基因组区域内控制这些性状的预测基因。这些发现可用于减少培育鹰嘴豆改良品种所需的时间和成本,改良品种保留了鹰嘴豆野生近缘种的主要农艺性状和有益性状,如抗病性和非生物胁迫耐受性。
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