Male sterility systems and their applications in hybrid wheat breeding

Farooq, Ayesha; Khan, Uzair Muhammad; Khan, Muhammad Ahsan; Ali, Zulfiqar; Maqbool, Rizwana; Sajjad, Muhammad

doi:10.1007/s42976-023-00376-4

Cited by 2 publications

(2 citation statements)

References 82 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…One of the main practical advantages of CHA treatments is their wide application range that allows to test many female lines without the need of more complex genetic fertility control systems (Easterly et al, 2019;Parodi & de los Angeles Gaju, 2009). Particularly for our study, the applied CHA-Croisor ® 100-is a plant growth regulator and belongs to the new generation of CHAs, which are less harming for the environment, have a more effective sterilization effect and are less phytotoxic as compared to early CHA molecules/formulations (Farooq et al, 2023;Singh et al, 2015;Whitford et al, 2013).…”

Section: Potential Confounding Effects Of Chasmentioning

confidence: 99%

“…For profitable hybrid seed production, the female parent component has to be male sterile. Despite the existence of several cytoplasmatic/nuclear genetic male sterility systems, treating plants with chemical-hybridizing agents (CHA) is still one of the most widely applied methods for plant emasculation in commercial hybrid seed production of wheat (Farooq et al, 2023;Whitford et al, 2013). This is probably because the use of a CHA treatment is in principle much simpler than implementing alternative fertility control systems dependent on restorer/maintainer genetics and has therefore a relatively wide application scope for the stable production of hybrids with a large number of different female lines (Easterly et al, 2019;Parodi & de los Angeles Gaju, 2009).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

First insights into the quantitative genetic composition of the female seed yield for an efficient hybrid seed production in wheat (Triticum aestivum L.)

Schneider,

Hinterberger,

Spiller

et al. 2024

Plant Breeding

View full text Add to dashboard Cite

Hybrid breeding of wheat (Triticum aestivum L.) is limited by its self‐pollinating nature. Past cross‐pollination improvements mostly focused on optimizing male traits. We tested the hybrid seed yield of 100 diverse elite lines treated with a chemical hybridization agent (CHA) and pollinated by non‐sterilized male plants in multi‐environmental field trials. Plant height and phenological traits of female plants were also assessed. In parallel, control experiments without CHA sterilization were conducted to measure per se yield of the tested material. Hybrid seed yield variation is of quantitative genetic nature, and, despite the large environmental influence, this trait has a strong genotypic component and is highly heritable (h2 = .77). The lack of correlation between hybrid seed yield and per se yield suggests a non‐shared genetic control. Phenological traits and their interactions are important factors explaining together ~1/3 of hybrid seed yield variation. In contrast to plant height and flowering traits, which are influenced by major genetic factors, no significant marker–trait associations were found for the hybrid seed yield, thus suggesting a highly polygenic genetic architecture and the need of larger populations to investigate female hybrid seed yield.

show abstract

Section: Potential Confounding Effects Of Chasmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

First insights into the quantitative genetic composition of the female seed yield for an efficient hybrid seed production in wheat (Triticum aestivum L.)

Schneider,

Hinterberger,

Spiller

et al. 2024

Plant Breeding

View full text Add to dashboard Cite

show abstract

Relationship Between Heterosis and Genetic Distance Determined by SSR Markers in Oriental Tobacco

Kınay,

Saygılı,

Kandemir

2024

Tekirdağ Ziraat Fakültesi Dergisi

View full text Add to dashboard Cite

Hybrid cultivars could be beneficial to achieve high leaf yields while maintaining good quality properties in oriental tobacco. Identification of parents constitutes a major part of a hybrid breeding program. The aim of the present study was to determine the relationship between the genetic distance of parents determined by simple sequence repeats (SSR) markers and heterosis levels in hybrids produced from those parents for leaf yield and quality properties in oriental tobacco. Twenty-one hybrids produced by half diallel crossing among seven tobacco genotypes used in oriental tobacco production in Turkey were grown along with their parents in three locations in 2012 and 2013. Twenty-nine SSR markers were used to determine genetic distances among seven tobacco genotypes. A total of 80 alleles were produced by all twenty-nine markers. Average number of observed alleles per polymorphic marker was 2.96. Twenty-seven of 80 alleles were observed in only one of the seven parents. The polymorphic information content of markers varied from 0.215 to 0.810 (average 0.480). Mid-parent heterosis levels ranged from 18.03 to 42.00% for leaf number, between -19.75 and 38.06% for leaf width, between -17.51 and 36.25% for leaf length, between -34.38 and 76.12% for leaf yield, between -78.30 and 154.01% for sugar content and between -45.40 and 143.29% for nicotine content. Heterosis levels were correlated with genetic distances between parents for leaf number in Erbaa 2012 and Tokat 2012 locations, for leaf width in Erbaa 2013 location, for leaf length in Erbaa 2013 location, and for leaf yield in Tokat 2012 location only. SSR markers were very effective to determine genetic distance of oriental tobacco, and only two markers could distinguish all seven genotypes used in the study. The findings indicated that genetic distance determined by SSR markers used in the present study is not sufficient to predict hybrid performance in oriental tobacco.

show abstract

Male sterility systems and their applications in hybrid wheat breeding

Cited by 2 publications

References 82 publications

First insights into the quantitative genetic composition of the female seed yield for an efficient hybrid seed production in wheat (Triticum aestivum L.)

First insights into the quantitative genetic composition of the female seed yield for an efficient hybrid seed production in wheat (Triticum aestivum L.)

Relationship Between Heterosis and Genetic Distance Determined by SSR Markers in Oriental Tobacco

Contact Info

Product

Resources

About