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[长穗偃麦草基因组中赋予磷缺乏胁迫耐受性的基因的染色体定位] [正在处理的引用]

[Chromosomal location of the genes conferring the tolerance to phosphorus deficiency stress in Lophopyrum elongatum genome] [In Process Citation].

作者信息

Li YJ, Liu JZ, Li B, Li JY, Yao SJ, Li ZS

机构信息

National Key Laboratory of Plant Cell and Chromosome Engineering, Chinese Academy of Sciences, Beijing.

出版信息

Yi Chuan Xue Bao. 1999;26(6):703-10.

Abstract

Identification and genetic analysis were conducted on the tolerance to phosphorus deficiency stress by using a set of alien disomic addition lines (DA lines) and disomic substitution lines (DS lines) of common wheat Chinese Spring-Lophopyrum elongatum (2n = 2x = 14, EE), a closely related wheat species. The results indicated that chromosomes 4E and 6E in L. elongatum may carry the genes conferring the tolerance to phosphorus deficiency stress with much stronger effect over the background parent Chinese Spring. DA lines derived from chromosomes 2E and 3E behaved quite different from the corresponding DS lines. Although DA2E and DA3E were susceptible to phosphorus deficiency, the DS lines performed much better than Chinese Spring, DA2E and DA3E under both control and the deficiency conditions. However, the strongly repressed stress tolerance was located on chromosome 5E. In addition, the possible reasons for the different reponses to phosphorus deficiency between DA and DS lines of chromosomes 2E and 3E are discussed.

摘要

利用一套普通小麦中国春-长穗偃麦草(2n = 2x = 14,EE)的异源二体附加系(DA系)和二体代换系(DS系)对缺磷胁迫耐受性进行了鉴定和遗传分析,长穗偃麦草是一种近缘小麦物种。结果表明,长穗偃麦草的4E和6E染色体可能携带赋予缺磷胁迫耐受性的基因,其对背景亲本中国春的影响要强得多。来自2E和3E染色体的DA系与相应的DS系表现出很大不同。虽然DA2E和DA3E对缺磷敏感,但在对照和缺磷条件下,DS系的表现均优于中国春、DA2E和DA3E。然而,5E染色体上存在强烈抑制的胁迫耐受性。此外,还讨论了2E和3E染色体的DA系和DS系对缺磷反应不同的可能原因。

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