scholarly journals Hybrid wheat breeding utilizing photoperiod-sensitive cytoplasmic male sterility.

1999 ◽  
Vol 1 (3) ◽  
pp. 181-188
Author(s):  
Koji Murai
Keyword(s):  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Wheat Breeding ◽  
Hybrid Wheat ◽  
Photoperiod Sensitive

Cytoplasmic male sterility in relation to hybrid wheat breeding

Der Züchter ◽  
1967 ◽  
Vol 37 (2) ◽  
pp. 86-93 ◽  
Author(s):  
H. Kihara
Keyword(s):  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Wheat Breeding ◽  
Hybrid Wheat

Photoperiod-sensitive cytoplasmic male sterility in wheat with Aegilops crassa cytoplasm

Euphytica ◽  
1993 ◽  
Vol 67 (1-2) ◽  
pp. 41-48 ◽  
Author(s):  
Koji Murai ◽  
Koichiro Tsunewaki
Keyword(s):  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Photoperiod Sensitive ◽  
Aegilops Crassa

scholarly journals Development of thermo-photo sensitive genic male sterile lines in wheat using doubled haploid breeding

2020 ◽  
Author(s):  
Hongsheng Li ◽  
Shaoxiang Li ◽  
Sedhom Abdelkhalik ◽  
Armaghan Shahzad ◽  
Jian Gu ◽  
...  
Keyword(s):  
Male Sterility ◽  
Doubled Haploid ◽  
Yellow Rust ◽  
Wheat Breeding ◽  
Yield Potential ◽  
Limiting Factor ◽  
Hybrid Wheat ◽  
Male Sterile ◽  
Dh Lines ◽  
F2 Generation

Abstract Background: Two-line hybrid wheat system using thermo-photo sensitive genic male sterility (TPSGMS) is currently the most promising approach for wheat heterosis utilization in China. However, during past twenty years only few TPSGMS lines were developed in hybrid wheat breeding, which has been the main limiting factor to create heterotic hybrids. Application of doubled haploid (DH) breeding provides a useful strategy to efficiently develop practically usable TPSGMS lines. Results: F1s and selected F2 and F3 sterile plants of eight crosses made from two commercial TPSGMS lines were used to produce DH lines. We developed a total of 24 elite DH sterile lines with stable sterility, good outcrossing and yield potential, resistance to yellow rust and powdery mildew, as well as desirable plant height (50-60 cm). These DH lines were developed within 4 years through at least one year of evaluation. The stability of male sterility was confirmed for most (20/24) of these elite DH sterile lines by multiple tests in two or three years. These lines are expected to be used in hybrid wheat breeding. The percentage of elite lines developed from the tested DH lines produced from filial generations was in the order of F2 > F3 > F1. Conclusions: We demonstrate that coupling DH techniques with conventional breeding is an efficient strategy for accelerating the development of more practical wheat TPSGMS lines. Generation of DHs from F2 generation appeared to be the better choice considering the balance of shortening breeding time and overall breeding efficiency.

scholarly journals The genetic basis of cytoplasmic male sterility and fertility restoration in wheat

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Joanna Melonek ◽  
Jorge Duarte ◽  
Jerome Martin ◽  
Laurent Beuf ◽  
Alain Murigneux ◽  
...  
Keyword(s):  
Cytoplasmic Male Sterility ◽  
Male Sterility ◽  
Genetic Basis ◽  
Fertility Restoration ◽  
Effective Control ◽  
Hybrid Wheat ◽  
Sequence Analyses ◽  
Wheat Varieties ◽  
Breeding Lines ◽  
Restorer Genes

AbstractHybrid wheat varieties give higher yields than conventional lines but are difficult to produce due to a lack of effective control of male fertility in breeding lines. One promising system involves the Rf1 and Rf3 genes that restore fertility of wheat plants carrying Triticum timopheevii-type cytoplasmic male sterility (T-CMS). Here, by genetic mapping and comparative sequence analyses, we identify Rf1 and Rf3 candidates that can restore normal pollen production in transgenic wheat plants carrying T-CMS. We show that Rf1 and Rf3 bind to the mitochondrial orf279 transcript and induce cleavage, preventing expression of the CMS trait. The identification of restorer genes in wheat is an important step towards the development of hybrid wheat varieties based on a CMS-Rf system. The characterisation of their mode of action brings insights into the molecular basis of CMS and fertility restoration in plants.

scholarly journals Development of thermo-photo sensitive genic male sterile lines in wheat using doubled haploid breeding

2020 ◽  
Author(s):  
Hongsheng Li ◽  
Shaoxiang Li ◽  
Sedhom Abdelkhalik ◽  
Armaghan Shahzad ◽  
Jian Gu ◽  
...  
Keyword(s):  
Male Sterility ◽  
Doubled Haploid ◽  
Yellow Rust ◽  
Wheat Breeding ◽  
Yield Potential ◽  
Limiting Factor ◽  
Hybrid Wheat ◽  
Male Sterile ◽  
One Year ◽  
Dh Lines

Abstract Background: Two-line hybrid wheat system using thermo-photo sensitive genic male sterility (TPSGMS) is currently the most promising approach for wheat heterosis utilization in China. However, during past twenty years only few TPSGMS lines were developed in hybrid wheat breeding, which has been the main limiting factor to create heterotic hybrids. Application of doubled haploid (DH) breeding provides a useful strategy to efficiently develop practically usable TPSGMS lines.Results: F1s and selected F2 and F3 sterile plants of eight crosses made from two commercial TPSGMS lines were used to produce DH lines. We developed a total of 24 elite DH sterile lines with stable sterility, good outcrossing and yield potential, resistance to yellow rust and powdery mildew, as well as desirable plant height (50-60 cm). These DH lines were developed within 4 years through at least one year of evaluation. The stability of male sterility was confirmed for most (20/24) of these elite DH sterile lines by multiple tests in two or three years. These lines are expected to be used in hybrid wheat breeding. The percentage of elite lines developed from the tested DH lines produced from filial generations was in the order of F2 > F3 > F1.Conclusions: We demonstrate that coupling DH techniques with conventional breeding is an efficient strategy for accelerating the development of more practical wheat TPSGMS lines. Generation of DHs from F2 generation appeared to be the better choice considering the balance of shortening breeding time and overall breeding efficiency.

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