Sib-compatibility in S1 lines of Medicago sativa L

Lantican, R. M.

doi:10.31274/rtd-180813-17262

Cited by 2 publications

(10 citation statements)

References 61 publications

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“…Studies by Tysdal e_t £l. (1942), Skory (1947), Wilsie (1958b), Koffman (1959) and Lantican (1961) have shown similar results. The segregation of fertility factors per se was apparently occurring with inbreeding which allowed a considerable range in self-fertility to be observed, particular ly in the generation.…”

Section: Discussionmentioning

confidence: 54%

“…Bolton (1948) found that crosses between second generation selfed plants, originating from the same parents, were intermediate in seed and forage yield between comparable inbred lines and outcross progenies. More recently, Koffman (1959) and Lantican (1961) have shown a restoration in fertility with sib-mating over selfing. Lantican also found a consistent increase in seed-setting over that obtained from sib-mating when the progenies were backcrossed to their non-inbred parents.…”

Section: Introductionmentioning

confidence: 99%

“…Among the selfed plants, they noted that 60.2 per cent had less than 20 per cent self-fertility. Lantican (1961) found a remarkable range in self-fertility among plants. For those plants in the high and intermediate self-fertility groups, he observed ranges of 0.066 to 1.594 and 0.017 to 1.029, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…Wilsie (1951) reported a fairly high degree of association (r = 0.71) between cross-and self-fertility, while Bolton (1948) found a correlation coefficient of only 0.288. More recently Lantican (1961) obtained significant positive correlations between crossand self-fertility following sib-mating and backcrossing of progenies to their non-inbred parent.…”

Section: Introductionmentioning

confidence: 99%

“…Additional improvement might be achieved by conducting a recurrent selection program with the parental stocks initially selected for toler ance to inbreeding. Lantican (1961) and more recently Williams (1964) have suggested the use of sib-mating and backcrossing as a means of obtaining inbred lines for the production of hybrids. From their investigations a much higher level of fertility was observed with sib-mating and backcrossing than with selfing.…”

Section: Introductionmentioning

confidence: 99%

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Inbreeding alfalfa, Medicago sativa L., by sib-mating

Aycock

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Alfalfa is a naturally cross-pollinated crop. This condition has been confirmed by several workers. Using Medicago falcata and M. sativa which produce yellow and purple flowers, respectively; Waldron (1919) in the United States found 85,4 per cent natural crossing. Tysdal et aj^. (1942) reported an average of 89.1 per cent cross-pollination using yellow and white flowers as testers. Similar results have been reported by Burkhart (1937) in Argentina, Knowles (1943) and Bolton (1948) in Canada, Johansen (1963) in Denmark, and Kehr and LaBerge (1966) in the United States. Recently Lesins (1961) has questioned the use of white-flowered plants in determining the amount of cross-pollination in a population of alfalfa. Firstly, because all testers used, except perhaps the yellowflowered plant, appear to have been inbreds; and if so, these inbred

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Section: Discussionmentioning

confidence: 54%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Inbreeding alfalfa, Medicago sativa L., by sib-mating

Aycock

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Transcriptomic Analysis of Self-Incompatibility in Alfalfa

Li,

Liu,

Wang

et al. 2024

Plants

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Alfalfa (Medicago sativa L.) is an important forage crop worldwide, but molecular genetics and breeding research in this species are hindered by its self-incompatibility (SI). Although the mechanisms underlying SI have been extensively studied in other plant families, SI in legumes, including alfalfa, remains poorly understood. Here, we determined that self-pollinated pollen tubes could germinate on the stigma of alfalfa, grow through the style, and reach the ovarian cavity, but the ovules collapsed ~48 h after self-pollination. A transcriptomic analysis of dissected pistils 24 h after self-pollination identified 941 differently expressed genes (DEGs), including 784 upregulated and 157 downregulated genes. A gene ontology (GO) analysis showed that the DEGs were highly enriched in functions associated with the regulation of pollen tube growth and pollen germination. A Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis indicated that pentose and glucuronate interconversion, plant hormone signal transduction, the spliceosome, and ribosomes might play important roles in SI. Our co-expression analysis showed that F-box proteins, serine/threonine protein kinases, calcium-dependent protein kinases (CDPKs), bHLHs, bZIPs, and MYB-related family proteins were likely involved in the SI response. Our study provides a catalog of candidate genes for further study to understand SI in alfalfa and related legumes.

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Sib-compatibility in S1 lines of Medicago sativa L

Cited by 2 publications

References 61 publications

Inbreeding alfalfa, Medicago sativa L., by sib-mating

Inbreeding alfalfa, Medicago sativa L., by sib-mating

Transcriptomic Analysis of Self-Incompatibility in Alfalfa

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