Phenotypic variation in root development of 162 soybean accessions under hypoxia condition at the seedling stage
Phenotypic variation in root development of 162 soybean accessions under hypoxia condition at the seedling stage
复制标题
162份大豆材料苗期缺氧条件下根系发育表型变异
DOI：
10.1080/1343943x.2017.1334511
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发表时间：
2017
影响因子：
2.5
通讯作者：
T. Mochizuki
中科院分区：
文献类型：
--
作者：
Keisuke Suematsu;T. Abiko;V. Nguyen;T. Mochizuki
摘要大豆苗期易受涝渍引起的缺氧伤害。缺氧严重抑制根系发育，延缓植物生长。我们的目的是澄清表型变异的根发育在低氧条件下，在苗期使用不同的大豆种质。在水培条件下，对162份材料的根系发育进行了评价。缺氧条件下的实质性变化进行了研究，通过WinRHIZO分析之前和之后的治疗。我们发现162份材料的根系耐缺氧性存在显著的表型变异。主成分分析表明，缺氧耐受性和原产国之间的关联。我们发现了三个新的品种，具有高的能力，在低氧下的根（国分7，Maetsue zairai 90 B，和Yahagi）。在土壤培养中也评价了所选种质的根发育。水培和土培的根系发育水平显著相关。这些结果将为涝渍灾害发生地区的涝渍灾害提供重要信息。这3份具有耐低氧根系的材料可能对现代大豆品种耐涝性的遗传改良有一定的参考价值。
Abstract Soybean is often damaged by hypoxia caused by waterlogging at the seedling stage. Hypoxia severely inhibits root development and retards plant growth. We aimed to clarify phenotypic variation in root development under hypoxia condition at the seedling stage using diverse soybean accessions. Root development in 162 accessions was evaluated in hydroponic culture. Substantial changes under hypoxia were investigated by means of WinRHIZO analysis before and after the treatment. We found significant phenotypic variation in hypoxia tolerance in root among the 162 accessions. A principal components analysis indicated an association between hypoxia tolerance and the country of origin. We found three new accessions which have a high ability to develop roots under hypoxia (Kokubu 7, Maetsue zairai 90B, and Yahagi). Root development in selected accessions was also evaluated in soil culture. Root development levels in hydroponic and soil culture were significantly correlated. These results will provide important information on waterlogging damage in regions where waterlogging occurs. The three accessions with hypoxia-tolerant roots might be useful for genetic improvement of waterlogging tolerance of modern soybean varieties.
影响因子：
2
作者：
Githiri, S. M.;Watanabe, S.;Takahashi, R.
通讯作者：
Takahashi, R.
影响因子：
1.2
作者：
Jitsuyama, Yutaka
通讯作者：
Jitsuyama, Yutaka