Methodologies for hybridization in predominantly self-pollinating crops: a review

Yahaya, Muhammad Ahmad; Shimelis, Hussein; Laing, Mark; Mohammed, Mohammed Sagir; Mathew, Isack

doi:10.1080/15427528.2019.1698483

Cited by 5 publications

(3 citation statements)

References 44 publications

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“…Subsequently, each F 1 generation was self‐pollinated using the methodology described by Yahaya et al. (2020). The resulting seeds from the F 1 were sown, forming three families of segregating individuals known as the second filial generations (F 2.1 , F 2.2 , and F 2.3 ).…”

Section: Methodsmentioning

confidence: 99%

“…Three first filial generations (F 1.1 , F 1.2 , and F 1.3 ) were obtained through crosses between the three MSL lines and the OP variety. Subsequently, each F 1 generation was selfpollinated using the methodology described by Yahaya et al (2020). The resulting seeds from the F 1 were sown, forming three families of segregating individuals known as the second filial generations (F 2.1 , F 2.2 , and F 2.3 ).…”

Section: Crop Sciencementioning

confidence: 99%

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Heritability of floral traits in Allium cepa L. populations from biparental crosses

Noguera Serrano,

Gimenez,

Paz

et al. 2024

Crop Science

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Onions (Allium cepa L.) are one of the main vegetable crops worldwide. As an allogamous species with entomophilous pollination, floral traits play a critical role in seed production. Improving seed yield, especially for hybrid seed production, is very important. In this work, we obtained genetic information for floral traits using segregating populations from three male‐sterile lines and one open‐pollinated variety. Data on 16 floral traits, including perianth, gynoecium, stamens, and receptacle structures, were collected from the parental cultivars, their hybrids, and from segregating populations in the F2 and F3 generations. This dataset underpinned a comprehensive analysis of genetic variability, broad‐ and narrow‐sense heritability estimation, genetic gain predictions, and trait correlations. The evaluated traits exhibited high broad‐sense heritability values (0.08–0.85), but moderate narrow‐sense heritability values (0.01–0.68), implying that the observed phenotypic variance is mainly explained by genetic factors, with a minor additive genetic factors contribution. Consequently, the study revealed effective genetic gain for the analyzed traits. The phenotypic correlations observed in the parental cultivars were not always maintained in the segregating populations, suggesting random correlations. Meanwhile, genetic correlations were moderate to low, suggesting that the analyzed traits can be independently selected without affecting the expression of other floral traits. Notably, correlations among floral traits were significant in stable cultivars but weak in segregating populations, excluding pleiotropic effects. This work has successfully demonstrated the heritability of onion floral traits and provided a sound basis for selecting individuals with desirable attributes, with valuable practical implications for onion breeding and seed production.

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Section: Methodsmentioning

confidence: 99%

Section: Crop Sciencementioning

confidence: 99%

Heritability of floral traits in Allium cepa L. populations from biparental crosses

Noguera Serrano,

Gimenez,

Paz

et al. 2024

Crop Science

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“…The flowery characteristics of cytoplasmic male sterile lines are crucial components of the hybrid breeding program [ 57 ]. However, manual cross pollination is a labor and time-intensive operation, making it difficult to produce large quantities of hybrid seeds for commercial cultivation [ 58 ].…”

Section: Breeding Techniques For Producing Hybrid Ricementioning

confidence: 99%

Hybrid Rice Production: A Worldwide Review of Floral Traits and Breeding Technology, with Special Emphasis on China

Ashraf,

Ghouri,

Baloch

et al. 2024

Plants

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Rice is an important diet source for the majority of the world’s population, and meeting the growing need for rice requires significant improvements at the production level. Hybrid rice production has been a significant breakthrough in this regard, and the floral traits play a major role in the development of hybrid rice. In grass species, rice has structural units called florets and spikelets and contains different floret organs such as lemma, palea, style length, anther, and stigma exsertion. These floral organs are crucial in enhancing rice production and uplifting rice cultivation at a broader level. Recent advances in breeding techniques also provide knowledge about different floral organs and how they can be improved by using biotechnological techniques for better production of rice. The rice flower holds immense significance and is the primary focal point for researchers working on rice molecular biology. Furthermore, the unique genetics of rice play a significant role in maintaining its floral structure. However, to improve rice varieties further, we need to identify the genomic regions through mapping of QTLs (quantitative trait loci) or by using GWAS (genome-wide association studies) and their validation should be performed by developing user-friendly molecular markers, such as Kompetitive allele-specific PCR (KASP). This review outlines the role of different floral traits and the benefits of using modern biotechnological approaches to improve hybrid rice production. It focuses on how floral traits are interrelated and their possible contribution to hybrid rice production to satisfy future rice demand. We discuss the significance of different floral traits, techniques, and breeding approaches in hybrid rice production. We provide a historical perspective of hybrid rice production and its current status and outline the challenges and opportunities in this field.

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Isolation and evaluation of novel male sterile and self‐incompatible mutant lines of mungbean (Vigna radiata L.)

Rahevar,

Chauhan,

Patel

et al. 2024

Plant Breeding

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Heterosis has long been harnessed in crop production, and while crop fertility lays the groundwork for leveraging heterosis, there remains a dearth of comprehensive data regarding genic male sterility in mungbean. Mungbean (Vigna radiata (L.) Wilczek), being a self‐pollinating crop, exhibits significant hybrid vigour in F1 hybrid seed yield, suggesting the potential for developing hybrid varieties to propel mungbean yield beyond existing plateaus. A new male sterile mutant was induced, isolated, stabilized and evaluated, via gamma irradiation at a rate of 600 Gy, identified in the M3 generation of the GM 4 accession. A uniform male sterile line was crossbred with the wild‐type parental plant to explore the inheritance pattern of male sterility. Pollen sterility was validated through the acetocarmine test, while stigma viability was ascertained using the hydrogen peroxide. While all F1 plants displayed fertile flowers, the F2 generation showed a clear 3:1 segregation ratio for fertile to male sterile plants, indicating the control of male sterility by a single recessive gene, mms. Also, a novel existence of a truncated stigma nestled within the anther column inhibits the effective reception of pollen during anthesis, offering potential in reducing emasculation time by a slight cut on the flower bud and enhancing cross pollination during hybrid seed production. The isolation of these two mutants is poised to significantly advance the global mungbean hybrid breeding programme.

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Methodologies for hybridization in predominantly self-pollinating crops: a review

Cited by 5 publications

References 44 publications

Heritability of floral traits in Allium cepa L. populations from biparental crosses

Heritability of floral traits in Allium cepa L. populations from biparental crosses

Hybrid Rice Production: A Worldwide Review of Floral Traits and Breeding Technology, with Special Emphasis on China

Isolation and evaluation of novel male sterile and self‐incompatible mutant lines of mungbean (Vigna radiata L.)

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