Maintainer and Restorer Identification and Conversion of Good Combiner Inbreds into New CMS Lines of Sunflower (Helianthus annuus L.)

Meena, H.P.; Pushpa, H D; Ghodke, M. K.

doi:10.20546/ijcmas.2019.802.256

Cited by 2 publications

(2 citation statements)

References 7 publications

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“…Although several new CMS sources are available, one of the most significant challenges in employing the diverse sterile cytoplasm for commercial hybrid seed production has been the exceptionally low frequency of pollen fertility restoration genes in the currently cultivated sunflower (Anaschenko, 1974). To reduce the genetic vulnerability of commercial sunflower hybrids caused by the current usage of a single source of cytoplasm and a few fertility restoration genes, alternative sources of cytoplasmic male sterility and fertility restorers are required (Ardilla et al, 2010;Meena and Sujatha, 2013;Meena and Prabakaran 2016). Increasing the diversity of hybrid parents, especially in restorer lines, is always the main breeding goal to solve this problem (Dudhe et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Restoration ability of newly developed restorer gene pool inbreds on two different CMS sources in sunflower (Helianthus annuus L.)

2022

EJPB

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Classical cytoplasmic male sterility (PET-1) discovered by Leclercq and a few restorer lines are being utilized for commercial hybrid seed production in sunflowers over the world since 1972. The utilisation of a single source of male sterility results in a high level of vulnerability to biotic and abiotic stresses. The goal of this study was to identify new fertility restorers for two different cytoplasmic male sterile sources, i.e., PET-1 (COSF-6A, COSF-7A, CMS-38A, ARM-248A) and CMS PEF (FMS-852A). Five CMS lines were crossed with newly developed drought tolerant 10 inbred lines in Line x Tester fashion and an evaluation of test cross progenies was conducted. All the inbreds were categorized into complete, partial restorers and maintainers through cytological observation. Six inbreds, viz., and RGP-233 behaved as restorers for all the CMS lines and restored fertility, while RGP-222 and 298R inbreds maintained sterility. The CMS line, FMS-852A was maintained by four inbreds indicating the involvement of different gene(s), while six inbreds, were restored its fertility. None of the inbreds behaved as partial restorers for any of the CMS lines. The fertility restoration ranged from 91.4 to 97.4 per cent in different cross combinations. In the present study, pollen fertility of up to 80 per cent was observed for the PET-1 source. However, only 60 per cent of the pollen fertility was observed for CMS fallax. From the study, it was evident that among the two CMS sources, restorers for PET-1 and PEF were available. Efforts should be made to utilize CMS PEF for the production of more productive sunflower hybrids resistant to biotic and abiotic stresses.

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Section: Introductionmentioning

confidence: 99%

Restoration ability of newly developed restorer gene pool inbreds on two different CMS sources in sunflower (Helianthus annuus L.)

2022

EJPB

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“…Sunflower is an important oilseeds crop which contributes around 12% of the global production of vegetable oil worldwide (Meena et al, 2019). With respect to production, sunflower takes fourth position after oil palm, soybean and canola oil and also it occupies second place after maize regarding heterosis breeding (Rauf et al, 2017).…”

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confidence: 99%

Assessment of stableness for male sterility in newly developed CMS lines in sunflower (Helianthus annuus L.)

2023

EJPB

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Diversification of parental lines both CMS and restorer inbreds are the absolute necessities in sunflower heterosis breeding programme for developing hybrids with high yield, high oil content as well as biotic and abiotic stress resistance. A total of 11 inbred lines with high oil content and high yield from TNHSF 239 population and also promising inbreds from a three way cross (TNHSF 239 x Wild 1-3-2) x Morden derivatives were utilized in conversion programme for developing new CMS lines in sunflower. Eleven newly developed CMS lines from BC 6 back cross population were evaluated for their stability across three locations namely Coimbatore, Vamban and Chettinad. All the CMS lines except COSF8A and COSF 9A exhibited stable sterility across the locations and all the maintainers showed 100% fertility at all the three locations. Three CMS lines namely COSF 6A, COSF 7A and COSF 12A were identified for their high oil content (40-43%). Hybrids of these CMS lines showed positive heterosis for yield and yield attributing traits. Therefore, newly developed promising CMS lines can be effectively utilized in hybrid breeding programme for developing high yielding and high oil hybrids in sunflower.

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Maintainer and Restorer Identification and Conversion of Good Combiner Inbreds into New CMS Lines of Sunflower (Helianthus annuus L.)

Cited by 2 publications

References 7 publications

Restoration ability of newly developed restorer gene pool inbreds on two different CMS sources in sunflower (Helianthus annuus L.)

Restoration ability of newly developed restorer gene pool inbreds on two different CMS sources in sunflower (Helianthus annuus L.)

Assessment of stableness for male sterility in newly developed CMS lines in sunflower (Helianthus annuus L.)

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