Delineation of inbred lines of Indian mustard into diverse gene pools based on agro-morphological traits

Singh, K. H.; Singh, Guman; Singh, Lal; Aftab, Nashra; Thakur, Ajay Kumar

doi:10.17221/75/2022-cjgpb

Cited by 2 publications

References 13 publications

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Vigna

Pratap

Malviya

Tomar

et al. 2013

Alien Gene Transfer in Crop Plants, Volume 2

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The genus Vigna comprises more than 200 species of which 7 are of tremendous agronomic importance. These are grown mainly in the warm temperate and tropical regions of the world. Valued for their grains with high and easily digestible proteins, these crops are also known as forage, green manure, and cover crops. Due to a short life cycle, these are suitable as catch crops and also fi t well in intercropping, mixed or relay cropping. For genetic improvement of cultivated vignas, mainly cultivated germplasm and exotic lines have been used so far. However, despite development of several improved cultivars in different Vigna crops, biotic and abiotic stresses still remain the major constraints in realizing their true yield potential. While plethora of genes conferring resistance/tolerance to these stresses have already been transferred from cultivated germplasm, wild genetic resources offer additional sources of useful alien variation which can be incorporated in cultivated Vigna through alien gene transfer. With better understanding of the processes behind pollen germination and pollen tube growth, fertilization, embryo and endosperm development and inheritance pattern, strategies have been developed to avoid pre-and post-fertilization barriers in successful distant hybridization leading to alien gene transfer. These include making reciprocal crosses, repeated pollination, hormonal treatment of fl ower buds, polyploidization, use of bridge species and most importantly, embryo rescue which have increased success rate of alien gene transfer in Vigna through sexual hybridization. Nevertheless, alien gene transfer through genetic transformation and use of molecular breeding tools still lag behind in Vigna and therefore need special attention. The signifi cant achievements made in different Vigna species in alien gene transfer and their utilization have been discussed in this chapter.

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Vigna

Pratap

Malviya

Tomar

et al. 2013

Alien Gene Transfer in Crop Plants, Volume 2

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In-Depth Understanding of Cytoplasmic Male Sterility by Metabolomics in Spring Stem Mustard (Brassica juncea var. tumida Tsen et Lee)

Wang,

Shen,

Huang

et al. 2024

Horticulturae

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Male sterility (MS) caused by aborted pollen is a vital germplasm resource. In this study, metabolomic, transcriptomic, and proteomic analyses were performed to investigate the molecular regulatory mechanism of cytoplasmic male sterility (CMS) in the flower buds of the male sterile line 09-05A and its maintainer line, 09-05B, of Brassica juncea. Our metabolomic analysis revealed that 41 metabolites involved in pollen development and male fertility formation were differentially accumulated between 09-05A and 09-05B at the bi-nucleate stage of B. juncea. Integrated omics indicated that the expression of key genes and proteins in the amino acid and phenylpropanoid metabolic pathways was remarkably downregulated in the flower buds of 09-05A. Furthermore, the abnormal expression of key transcription factor (TF) genes related to tapetum development and pollen wall formation may affect pollen development in the 09-05A CMS line. The results indicated that the downregulated expression level of critical genes and proteins in amino acid metabolism; phenylpropanoid synthesis; and TF genes, such as shikimate kinase, phenylalanine ammonia-lyase, and MYB103, may have led to impaired tapetum and pollen wall development, thereby causing pollen abortion in 09-05A. This study provides new insights into the metabolic and molecular regulatory mechanisms underlying the formation of CMS in B. juncea and lays a foundation for detailed studies on the identity and characteristics of MS-related genes.

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Delineation of inbred lines of Indian mustard into diverse gene pools based on agro-morphological traits

Cited by 2 publications

References 13 publications

Vigna

Vigna

In-Depth Understanding of Cytoplasmic Male Sterility by Metabolomics in Spring Stem Mustard (Brassica juncea var. tumida Tsen et Lee)

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