Clarification of the mechanisms of growth response to cultivation methods in rice plants with genome information

利用基因组信息阐明水稻植株生长对栽培方法的反应机制

• 批准号: 16380012
• 负责人: GOTO Yusuke
• 金额: $ 9.92万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2004
• 资助国家: 日本
• 起止时间: 2004 至 2006
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-16380012/
• 关键词: genotype-environment interaction; rice; recombinant inbred linens; tiller number; yield components; irrigation regimes; compensation; QTL; 最高茎数; 一穂籾数; 穂数; 分げつ出現率

To analyze the effect of deep water irrigation on tiller number (TN), culm thickness (CT) and spikelet number per panicle (SPP) at QTL level, TN, CT, grain yield (YD) and its components of backcross inbred population from the cross between Akihikari (temperate japonica) and IRAT109 (tropical japonica) were investigated under two different water regimes (the standard irrigation and the deep-water irrigation) at the experimental farm of the Miyagi University in 2004 and 2005.Two-way ANOVA revealed significant genotype-by-irrigation interactions for almost all traits. Among QTLs for TN and panicle number (PN), some QTLs interacted with irrigation (QTLs with great difference in LOD score between two different water regimes or high LOD score in relative parameter [the ratio of the parameters under the standard irrigation and the deep-water irrigation]).In addition, QTLs for CT and SPP were co-localized with them and had an opposite effect in relative parameter. This suggests the causal relationship between tiller suppression, enlargement of CT and increment of SPP by deep water irrigation. One QTL for CT interacting with irrigation was not corresponded to any QTLs for TN, suggesting the mechanism that deep water irrigation enlarges CT directly (=not only through tiller suppression) also exists. Examining the yield formation at QTL level, QTL for PN on chromosome 12 corresponded to large-effect QTL for YD in a year, suggesting that PN strongly regulates YD at QTL level. But its effect on YD was cancelled out by the opposite effect of SPP, thus QTL for YD is not detected in the other year. The unsuitability of compensatory mechanism at QTL level between PN and SPP determines the expression pattern of QTL for YD.

在QTL水平上分析了深水灌溉对水稻分蘖数（TN）、茎粗（CT）和每穗颖花数（SPP）的影响，以秋光与水稻回交群体为材料，研究了其产量构成因素（温带粳稻）和IRAT 109（热带粳稻）在两种不同的水分条件下进行了研究2004年和2005年在宫城大学实验农场进行了常规灌溉和深水灌溉两种灌溉方式的田间试验。在影响全氮和穗数的QTL中，部分QTL与灌水量互作（在两种不同水分条件下LOD值差异较大或相对参数（标准灌溉和深水灌溉下参数之比）LOD值较高的QTL），而影响CT和SPP的QTL与它们共定位，且相对参数的LOD值与之相反。这表明，分蘖抑制，CT扩大和SPP增加深水灌溉的因果关系。一个与灌溉互作的CT QTL与任何TN QTL都不对应，表明深水灌溉直接（=不仅通过分蘖抑制）扩大CT的机制也存在。在QTL水平上检测产量形成，位于第12染色体上的PN QTL与YD的大效应QTL相对应，表明PN在QTL水平上对YD有强烈的调控作用。但其对YD的效应被SPP的反效应所抵消，因此未检测到YD的QTL。PN和SPP在QTL水平上补偿机制的不适应性决定了YD QTL的表达模式。

项目成果

イネF1雑種の分げつ性の解析

杂交水稻F1代分蘖性状分析

• 发表时间: 2005
• 期刊: 日本作物学会記事 74巻・別2号
• 作者: Suzuki;G.;平嶋奈津子;内山美奈;神山康夫;山崎耕宇他監修;石橋俊明;石橋俊明;T.Ishibashi;T.Ishibashi;石橋俊明;石橋俊明;後藤雄佐;松井瑞穂;石橋俊明
• 通讯作者: 石橋俊明

Yield×irrigation interaction in rice at the QTL level.

水稻产量×灌溉在QTL水平上的相互作用。

• 发表时间: 2007
• 期刊: Japanese Journal of Crop Science Vol.76(Extra issue 1)
• 作者: Suzuki;G.;平嶋奈津子;内山美奈;神山康夫;山崎耕宇他監修;石橋俊明;石橋俊明;T.Ishibashi;T.Ishibashi
• 通讯作者: T.Ishibashi

QTLからみたイネ分げつ動態の遺伝子型×水管理交互作用

QTL视角下基因型×水分管理交互作用对水​​稻分蘖动态的影响

• 发表时间: 2007
• 期刊: 日本作物学会記事 76巻・別1号
• 作者: Suzuki;G.;平嶋奈津子;内山美奈;神山康夫;山崎耕宇他監修;石橋俊明
• 通讯作者: 石橋俊明

Tillering response of rice to irrigation regimes ; a QTL analysis.

水稻分蘖对灌溉制度的反应；

• 发表时间: 2005
• 期刊: Japanese Journal of Crop Science Vol.74(Extra issue 1)
• 作者: Suzuki;G.;平嶋奈津子;内山美奈;神山康夫;山崎耕宇他監修;石橋俊明;石橋俊明;T.Ishibashi;T.Ishibashi;石橋俊明;石橋俊明;後藤雄佐;松井瑞穂;石橋俊明;Y.Goto
• 通讯作者: Y.Goto

Tillering behavior of F1 hibrids in rice.

水稻F1杂种的分蘖行为。

• 发表时间: 2005
• 期刊: Japanese Journal of Crop Science Vol.74(Extra issue 2)
• 作者: Suzuki;G.;平嶋奈津子;内山美奈;神山康夫;山崎耕宇他監修;石橋俊明;石橋俊明;T.Ishibashi;T.Ishibashi;石橋俊明;石橋俊明;後藤雄佐;松井瑞穂;石橋俊明;Y.Goto;M.Matsui;T.Ishibashi
• 通讯作者: T.Ishibashi