Developing Climate-Resilient, Direct-Seeded, Adapted Multiple-Stress-Tolerant Rice Applying Genomics-Assisted Breeding.
Developing Climate-Resilient, Direct-Seeded, Adapted Multiple-Stress-Tolerant Rice Applying Genomics-Assisted Breeding.
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利用基因组学辅助育种开发气候适应型、直接播种型、适应性多逆境耐受性水稻。
DOI：
10.3389/fpls.2021.637488
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发表时间：
2021
影响因子：
5.6
通讯作者：
Kumar A
中科院分区：
文献类型：
--
作者：
Sandhu N;Yadav S;Catolos M;Cruz MTS;Kumar A
迫切需要培育适应干旱直播的水稻品种，以解决新出现的水-劳动力短缺问题。本研究的目的是开发高产，直接播种适应品种，利用双亲到多亲杂交，涉及多达6个不同的父母在常规育种计划和12个父母在基因组学辅助育种计划。从F2代开始进行严格的单株选择，利用表型选择和数量性状基因座（QTL）/基于基因的/连锁的标记来追踪目标QTL/基因的期望等位基因的存在。在传统育种中，多亲系的产量（2，072 - 6，569 kg ha−1）显著高于双亲系（1，493 - 6，326 kg ha−1）。来自多亲本杂交的GAB品系的产量（3，293 - 6，719 kg ha−1）显著高于来自常规育种的多亲本品系（2，072 - 6，569 kg ha−1）。从基因组辅助育种中选择了11个携带7-11个QTL/基因的有希望的品系，从常规育种中选择了8个品系，与最佳对照相比，籽粒产量分别从727至1，705 kg ha−1和68至902 kg ha−1提高。开发的品系可以作为品种/亲本品系发布，以开发用于直播情况的更好的水稻品种，或者作为新的育种材料来研究遗传相互作用。
There is an urgent need to breed dry direct-seeded adapted rice varieties in order to address the emerging scenario of water–labor shortage. The aim of this study was to develop high-yielding, direct-seeded adapted varieties utilizing biparental to multiparental crosses involving as many as six different parents in conventional breeding programs and 12 parents in genomics-assisted breeding programs. The rigorous single plant selections were followed from the F2 generation onwards utilizing phenotypic selection and quantitative trait locus (QTL)/gene-based/linked markers for tracking the presence of desirable alleles of targeted QTL/genes. In conventional breeding, multiparent lines had significantly higher yields (2,072–6,569 kg ha−1) than the biparental lines (1,493–6,326 kg ha−1). GAB lines derived from multiparent crosses had significantly higher (3,293–6,719 kg ha−1) yields than the multiparent lines from conventional breeding (2,072–6,569 kg ha−1). Eleven promising lines from genomics-assisted breeding carrying 7–11 QTL/genes and eight lines from conventional breeding with grain-yield improvement from 727 to 1,705 kg ha−1 and 68 to 902 kg ha−1, respectively, over the best check were selected. The developed lines may be released as varieties/parental lines to develop better rice varieties for direct-seeded situations or as novel breeding material to study genetic interactions.
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影响因子：
5.5
作者：
Ghosal, Sharmistha;Casal, Carlos, Jr.;Dixit, Shalabh
通讯作者：
Dixit, Shalabh
影响因子：
2.1
作者：
Bhushan, Lav;Ladha, Jagdish K.;Pathak, H.
通讯作者：
Pathak, H.
影响因子：
4.6
作者：
Das G;Rao GJN;Varier M;Prakash A;Prasad D
通讯作者：
Prasad D
影响因子：
2.9
作者：
Galeng-Lawilao J;Kumar A;De Waele D
通讯作者：
De Waele D
DOI：
10.1186/1939-8433-6-11
发表时间：
2013-05-06
期刊：
Rice (New York, N.Y.)
影响因子：
--
作者：
Bandillo N;Raghavan C;Muyco PA;Sevilla MA;Lobina IT;Dilla-Ermita CJ;Tung CW;McCouch S;Thomson M;Mauleon R;Singh RK;Gregorio G;Redoña E;Leung H
通讯作者：
Leung H