Conditions favouring doubled haploid breeding over conventional breeding of self-fertilizing crops

Euphytica ◽  
1987 ◽  
Vol 36 (2) ◽  
pp. 441-453 ◽  
Author(s):  
K. Yonezawa ◽  
T. Nomura ◽  
Y. Sasaki
Keyword(s):  
Doubled Haploid ◽  
Conventional Breeding ◽  
Doubled Haploid Breeding

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

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

scholarly journals Development of In Vivo Haploid Inducer Lines for Screening Haploid Immature Embryos in Maize

Plants ◽  
2020 ◽  
Vol 9 (6) ◽  
pp. 739
Author(s):  
Chen Chen ◽  
Zijian Xiao ◽  
Junwen Zhang ◽  
Wei Li ◽  
Jinlong Li ◽  
...  
Keyword(s):  
Doubled Haploid ◽  
Immature Embryos ◽  
Haploid Induction ◽  
Haploid Induction Rate ◽  
Induction Rate ◽  
Haploid Inducer ◽  
Breeding Populations ◽  
Selection For ◽  
Doubled Haploid Breeding

Doubled haploid technology is widely applied in maize. The haploid inducer lines play critical roles in doubled haploid breeding. We report the development of specialized haploid inducer lines that enhance the purple pigmentation of crossing immature embryos. During the development of haploid inducer lines, two breeding populations derived from the CAU3/S23 and CAU5/S23 were used. Molecular marker-assisted selection for both qhir1 and qhir8 was used from BC1F1 to BC1F4. Evaluation of the candidate individuals in each generation was carried out by pollinating to the tester of ZD958. Individuals with fast and clear pigmentation of the crossing immature embryos, high number of haploids per ear, and high haploid induction rate were considered as candidates. Finally, three new haploid inducer lines (CS1, CS2, and CS3) were developed. The first two (CS1 and CS2) were from the CAU3/S23, with a haploid induction rate of 8.29%–13.25% and 11.54%–15.54%, respectively. Meanwhile, the CS3 was from the CAU5/S23. Its haploid induction rate was 8.14%–12.28%. In comparison with the donor haploid inducer lines, the 24-h purple embryo rates of the newly developed haploid inducer lines were improved by 10%–20%, with a ~90% accuracy for the identification of haploid immature embryos. These new haploid inducer lines will further improve the efficiency of doubled haploid breeding of maize.

scholarly journals Influence of different wheat and Imperata cylindrica genetic backgrounds on haploid induction efficiency in wheat doubled haploid breeding

2014 ◽  
Vol 50 (No. 3) ◽  
pp. 195-200 ◽  
Author(s):  
S.A. Rather ◽  
H.K. Chaudhary ◽  
V. Kaila
Keyword(s):  
Bread Wheat ◽  
Doubled Haploid ◽  
Combining Ability ◽  
General Combining Ability ◽  
Imperata Cylindrica ◽  
Haploid Induction ◽  
Embryo Formation ◽  
Haploid Production ◽  
Formation Efficiency ◽  
Doubled Haploid Breeding

Four Indian and one Japanese accession of Imperata cylindrica were assessed for their influence upon haploid production in F<sub>1</sub> generations of 21 wheat crosses (winter &times; spring, spring &times; spring and winter &times; winter) to find an efficient pollen source for haploid induction, which would enhance doubled haploid breeding in bread wheat. The frequency of haploid induction was influenced differently by the wheat and the I. cylindrica genotypes, indicating both maternal and paternal genetic influence on haploid induction. The gene actions controlling the inheritance of&nbsp; haploid induction&nbsp; appeared to be non-additive. Haploid formation efficiency was closely associated with other haploid induction parameters, i.e. pseudoseed formation, embryo formation and haploid regeneration. Amongst wheat F<sub>1</sub> groups, spring &times; spring wheats exhibited the highest potential for haploid induction. General combining ability for haploid production was highest for the, I. cylindrica genotype Ic-Aru, native to the northeastern Himalayas, which appears as a potential pollen source for efficient haploid induction in bread wheat.

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