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

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Hongsheng Li ◽  
Shaoxiang Li ◽  
Sedhom Abdelkhalik ◽  
Armaghan Shahzad ◽  
Jian Gu ◽  
...  
Keyword(s):  
Doubled Haploid ◽  
Male Sterile ◽  
Doubled Haploid Breeding

scholarly journals Efficient development of practically usable thermo-photo sensitive genic male sterile lines in wheat through doubled haploid breeding

2019 ◽  
Author(s):  
Hongsheng Li ◽  
Shaoxiang Li ◽  
Sedhom Abdelkhalik ◽  
Armaghan Shahzad ◽  
Jian Gu ◽  
...  
Keyword(s):  
Doubled Haploid ◽  
Yellow Rust ◽  
Hybrid Breeding ◽  
Hybrid Wheat ◽  
Practical Application ◽  
Male Sterile ◽  
Time Saving ◽  
Breeding Efficiency ◽  
Dh Lines ◽  
Doubled Haploid Breeding

Abstract Two-line hybrid wheat system using thermo-photo sensitive genic male sterility (TPSGMS) is now a dominant and promising approach of wheat heterosis utilization in China. However, few TPSGMS lines available for practical application have always been a bottleneck affecting the efficiency of creating hybrids with strong heterosis since its establishment in 1992. This study aimed to improve the efficiency of developing TPSGMS lines by doubled haploid (DH) breeding. F 1 s and selected F 2 and F 3 sterile plants from 8 crosses made with 2 commercial TPSGMS lines K78S and K456S were used to produce DH lines by wheat × maize system. 24 elite sterile lines possessing stable sterility, good outcrossing and yield potentials, resistance to yellow rust and powdery mildew, and desirable plant height (50-60 cm) were obtained within 4 years. 20 out of 24 elite lines that performed stable sterility in tests of two or three years and high outcrossing rate (>70%) under open pollination, will be used for hybrid breeding later. The percentage of selected sterile lines in total tested DH lines produced from filial generations was in the order of F 3 > F 2 > F 1 for sterility, and F 2 > F 3 > F 1 for elite lines in this study, thus producing DHs from F 2 generation appeared to be the better choice considering the balance of overall breeding efficiency and time saving. This study verified that combining DH techniques with conventional breeding would be an efficient strategy for developing practically usable wheat TPSGMS lines, both in number and time saving.

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 Registration of ‘Kharoba’: A Bread Wheat Cultivar Developed through Doubled Haploid Breeding

2012 ◽  
Vol 6 (2) ◽  
pp. 169-173 ◽  
Author(s):  
J. Elhaddoury ◽  
S. Lhaloui ◽  
S.M. Udupa ◽  
B. Moatassim ◽  
R. Taiq ◽  
...  
Keyword(s):  
Bread Wheat ◽  
Doubled Haploid ◽  
Wheat Cultivar ◽  
Bread Wheat Cultivar ◽  
Doubled Haploid Breeding

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.

PRODUCTION OF DOUBLED HAPLOID BREEDING LINES IN CASE OF PAPRIKA, SPICE PAPRIKA, EGGPLANT, CUCUMBER, ZUCCHINI AND ONION

2006 ◽  
pp. 845-854 ◽  
Author(s):  
A. Gémes Juhasz ◽  
G. Venczel ◽  
ZS. Sagi ◽  
L. Gajdos ◽  
Z. Kristof ◽  
...  
Keyword(s):  
Doubled Haploid ◽  
Breeding Lines ◽  
Doubled Haploid Breeding
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