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首页> 外文期刊>Plant Breeding and Seed Science >The influence of additions of rye chromosomes on plant dry matter and root size in bread wheat.
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The influence of additions of rye chromosomes on plant dry matter and root size in bread wheat.

机译：黑麦染色体添加对面包小麦植株干物质和根大小的影响。

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摘要

The tolerance of poor soil and high use efficiency of mineral nutrients of rye has been successfully transferred to triticale, but only one rye chromosome (IRS) has been used in wheat breeding. We started studies on identification of other rye chromosomes potentially useful in the improvement of wheat, with special emphasis on root characters. We analysed dry matter, length and number of roots (seminal and adventitious roots separately), together with plant dry matter, in two sets of disomic wheat-rye addition lines (Chinese Spring (CS)-'Blanco' and CS-'Imperial'). Plants were grown in hydroponic culture. In relation to the 'CS' wheat, all the addition lines showed decrease of plant and root size parameters. The chromosomes 5R and 7R were best tolerated in wheat, but they caused a decrease of root proportion in plant. The 4R addition was the least viable one, but the root/plant ratio was higher than in wheat. The results were influenced mainly by interaction between homoeology group and cultivar of origin of rye chromosomes. The highest interactions of this kind were found in the 5R and 6R additions..
机译：黑麦对贫瘠土壤的耐受性和矿物质养分的高效利用已成功地转移到黑小麦中，但小麦育种中仅使用了一个黑麦染色体（IRS）。我们开始研究鉴定可能对小麦改良有用的其他黑麦染色体，特别强调根系特征。我们分析了两组二色小麦-黑麦加成系（中国春（CS）-'Blanco'和CS-'Imperial'）的干物质，根的长度和根数（分别为生和不定根）以及植物干物质。 ）。植物在水培培养中生长。关于“ CS”小麦，所有添加系均显示出植物和根系大小参数的降低。小麦对5R和7R染色体的耐受性最好，但它们导致了植物根系比例的降低。加入4R是最不可行的，但根/植物比高于小麦。结果主要受到同源性群体与黑麦染色体起源品种之间相互作用的影响。在5R和6R添加物中发现了这种类型的最高相互作用。

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