scholarly journals Advanced backcross QTL analysis reveals complicated genetic control of rice grain shape in a japonica × indica cross

2015 ◽  
Vol 65 (4) ◽  
pp. 308-318 ◽  
Author(s):  
Kazufumi Nagata ◽  
Tsuyu Ando ◽  
Yasunori Nonoue ◽  
Tatsumi Mizubayashi ◽  
Noriyuki Kitazawa ◽  
...  
Keyword(s):  
Genetic Control ◽  
Qtl Analysis ◽  
Grain Shape ◽  
Rice Grain ◽  
Advanced Backcross

Improvement of hybrid yield by advanced backcross QTL analysis in elite maize

2002 ◽  
Vol 105 (2) ◽  
pp. 440-448 ◽  
Author(s):  
J. Ho ◽  
S. McCouch ◽  
M. Smith
Keyword(s):  
Qtl Analysis ◽  
Advanced Backcross

Advanced-backcross QTL analysis in spring barley: IV. Localization of QTL × nitrogen interaction effects for yield-related traits

Euphytica ◽  
2010 ◽  
Vol 177 (2) ◽  
pp. 223-239 ◽  
Author(s):  
Bernhard Saal ◽  
Maria von Korff ◽  
Jens Léon ◽  
Klaus Pillen
Keyword(s):  
Qtl Analysis ◽  
Spring Barley ◽  
Interaction Effects ◽  
Advanced Backcross

QTL analysis for rice grain length and fine mapping of an identified QTL with stable and major effects

2006 ◽  
Vol 112 (7) ◽  
pp. 1258-1270 ◽  
Author(s):  
X. Y. Wan ◽  
J. M. Wan ◽  
L. Jiang ◽  
J. K. Wang ◽  
H. Q. Zhai ◽  
...  
Keyword(s):  
Fine Mapping ◽  
Qtl Analysis ◽  
Rice Grain ◽  
Grain Length

scholarly journals Substitution Mapping of Two Closely Linked QTLs Controlling Grain Chalkiness and Grain Shape on Rice Chromosome 8

2021 ◽  
Author(s):  
Weifeng Yang ◽  
Liang Xiong ◽  
Jiayan Liang ◽  
Qingwen Hao ◽  
Xin Luan ◽  
...  
Keyword(s):  
Grain Quality ◽  
Grain Shape ◽  
Rice Chromosome ◽  
Chromosome 8 ◽  
High Yield ◽  
Rice Grain ◽  
Rice Varieties ◽  
Substitution Mapping ◽  
Grain Width ◽  
Grain Chalkiness

Abstract Background: Rice varieties are required to have high yield and good grain quality. Grain chalkiness and grain shape are two important traits of rice grain quality. Low chalkiness slender grains are preferred by most rice consumers. Here, we dissected two closely linked quantitative trait loci (QTLs) controlling grain chalkiness and grain shape on rice chromosome 8 by substitution mapping. Results: Two closely linked QTLs controlling grain chalkiness and grain shape were identified using single-segment substitution lines (SSSLs). The two QTLs were then dissected on rice chromosome 8 by secondary substitution mapping. qPGC8.1 was located in an interval of 1382.6 kb and qPGC8.2 was mapped in a 2057.1 kb region. The maximum distance of the two QTLs was 4.37 Mb and the space distance of two QTL intervals was 0.72 Mb. qPGC8.1 controlled grain chalkiness and grain width. qPGC8.2 was responsible for grain chalkiness and for grain length and grain width. The additive effects of qPGC8.1 and qPGC8.2 on grain chalkiness were not affected by heat stress. Conclusions: Two closely linked QTLs qPGC8.1 and qPGC8.2 were dissected on rice chromosome 8. They controlled the phenotypes of grain chalkiness and grain shape. The two QTLs were insensitive to high temperature.

scholarly journals QTL analysis on rice grain appearance quality, as exemplifying the typical events of transgenic or backcrossing breeding

2014 ◽  
Vol 64 (3) ◽  
pp. 231-239 ◽  
Author(s):  
Bao Yan ◽  
Rongjia Liu ◽  
Yibo Li ◽  
Yan Wang ◽  
Guanjun Gao ◽  
...  
Keyword(s):  
Qtl Analysis ◽  
Rice Grain ◽  
Appearance Quality

scholarly journals Whole-Genome Sequencing Identifies a Rice Grain Shape Mutant, gs9–1

Rice ◽  
2019 ◽  
Vol 12 (1) ◽  
Author(s):  
Liangrong Jiang ◽  
Guotian Li ◽  
Mawsheng Chern ◽  
Rashmi Jain ◽  
Nhan T. Pham ◽  
...  
Keyword(s):  
Whole Genome Sequencing ◽  
Genome Sequencing ◽  
Grain Shape ◽  
Rice Grain ◽  
Whole Genome

Novel OsGRAS19 mutant, D26, positively regulates grain shape in rice (Oryza sativa)

2019 ◽  
Vol 46 (9) ◽  
pp. 857 ◽  
Author(s):  
Zhimin Lin ◽  
Jingwan Yan ◽  
Jun Su ◽  
Huaqing Liu ◽  
Changquan Hu ◽  
...  
Keyword(s):  
Functional Analysis ◽  
Grain Size ◽  
Transcription Factor ◽  
Grain Shape ◽  
Rice Yield ◽  
Reproductive Development ◽  
Cell Number ◽  
Rice Grain ◽  
Regulatory Effect ◽  
Site Mutation

Grain size is an important factor in rice yield. Several genes related to grain size have been reported, but most of them are determined by quantitative trail loci (QTL) traits. Gene D26 is a novel site mutation of OsGRAS19 and involved in the brassinosteroid (BR) signalling pathway. However, whether D26 is involved in the process of rice reproductive development remains unclear. Here, gene cloning and functional analysis revealed that D26 has an obvious regulatory effect on grain size. Overexpression or CRISP/Cas9 mutant of D26 also showed that grain size was positively influenced. Cellular analyses show that D26 modulates grain size by promoting cell division and regulating the cell number in the upper epidermis of the glume. The overexpression results further suggest that the level of D26 expression positively impacts grain length and leaf angles and that the expression of several known grain size genes is involved in the regulation. Based on our results, D26, as a transcription factor, effectively improves rice grain shape.

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