A reproductive tetraploid Vicia faba L.

Poulsen, M. H.; Martı́n, A.

doi:10.1111/j.1601-5223.1977.tb01253.x

Cited by 20 publications

(4 citation statements)

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“…Regarding pollen production, the amount of pollen detected in the parental lines and RILs (Vf6: 22,837; Vf27: 11,184; RILs: 19,102 pollen grains) is similar to that found in other studies [ 27 , 39 ], although it differs from that reported by Kambal et al [ 19 ]. Regarding pollen size, the equatorial width of normal pollen in this study (~ 33 μm) is similar to that reported (~ 30 μm) by Poulsen and Martin [ 31 ], but larger than that described by Kurkina et al [ 40 ] (24.5 μm). This indicates a certain variability in the pollen size depending on the crop variety.…”

Section: Discussionsupporting

confidence: 90%

“…Since the equatorial pollen size in faba bean has been reported as ~ 30 μm [ 31 ], we asked why some lines showed lower mean values. Figure 2 shows the number of pollen grains found for each particle size in five samples from parental lines Vf6 and Vf27.…”

Section: Resultsmentioning

confidence: 99%

“…The size range established at the counter for the complete particle counting was 15–50 μm. Since the normal faba bean pollen size is estimated at ~ 30 μm [ 31 ], all particles between 27 and 38 μm were considered as normal pollen. All particles detected outside this range were classified as abnormal pollen.…”

Section: Methodsmentioning

confidence: 99%

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Study and QTL mapping of reproductive and morphological traits implicated in the autofertility of faba bean

et al. 2022

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Autofertility describes the ability of faba bean flowers to self-fertilize thereby ensuring the productivity of this crop in the absence of pollinators or mechanical disturbance. In the legume crop faba bean (Vicia faba L.), lack of autofertility in a context of insufficient pollination can lead to a severe decrease in grain yield. Here we performed the first QTL analysis aimed at identifying the genomic regions controlling autofertility in this crop. We combined pod and seed setting scores from a recombinant inbred population (RIL) segregating for autofertility in different environments and years with measurements of morphological floral traits and pollen production and viability. This approach revealed 19 QTLs co-localizing in six genomic regions. Extensive co-localization was evident for various floral features whose QTLs clustered in chrs. I, II and V, while other QTLs in chrs. III, IV and VI revealed co-localization of flower characteristics and pod and seed set data. The percentage of phenotypic variation explained by the QTLs ranged from 8.9 for style length to 25.7 for stigma angle. In the three QTLs explaining the highest phenotypic variation (R2 > 20), the marker alleles derived from the autofertile line Vf27. We further inspected positional candidates identified by these QTLs which represent a valuable resource for further validation. Our results advance the understanding of autofertility in faba bean and will aid the identification of responsible genes for genomic-assisted breeding in this crop.

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Section: Discussionsupporting

confidence: 90%

Section: Resultsmentioning

confidence: 99%

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Study and QTL mapping of reproductive and morphological traits implicated in the autofertility of faba bean

et al. 2022

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“…The method of viability assessment can affect a study's finding with regard to how it deals with small pollen grains. A normal-sized faba bean pollen grain has about 50 µm length and 30 µm width (Poulsen and Martin 1977; Supplementary file 1, Fig. 1).…”

Section: Effects Of Environment and Assessment Methods On Pollen Viab...mentioning

confidence: 99%

Pollen production, pollen viability and autofertility in faba bean (Vicia fabaL.) and their relationship with realized paternal success

Brünjes,

Link

2023

Preprint

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In animal-pollinated plants, pollen dispersal depends on several plant and animal characteristics which may influence a plant’s paternal success. Different paternal success influences the genetic contribution of a genotype to the next generation. In breeding of partially allogamous faba bean (Vicia fabaL.), synthetic populations are developed where equal contributions of genotypes to the next generation are desired to reduce inbreeding. Since direct assessments of paternity are elaborate and costly, we studied whether components of plant fitness such as pollen production and pollen viability can be used as estimates for paternity. In a field experiment and a caged outdoor pot experiment, a total of 18 genotypes (14 inbred lines, 4 F1 hybrids) of faba bean were evaluated for pollen production, pollen viability and autofertility. Pollen production was higher at the lower than at the upper inflorescences and we found mid-parent heterosis for this trait. The relative pollen viability was high (93 % – 97 % in pots, 88 % – 95 % in field) indicating that fertilization success is rather not limited by a low pollen quality. Only in the field, pollen of F1 hybrids was more viable than pollen of inbred lines. Autofertility ranged from 0 % – 98 %, with very marked average mid-parent heterosis for this trait. Autofertility did not seem to be related to either pollen production, pollen viability or paternal success. However, pollen production and pollen viability were highly correlated with paternal success. Hence, data on pollen production and viability might be useful in breeding of synthetic populations to choose parents with small differences in paternal successes, to reduce inbreeding and better exploit heterosis.

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Utilization of Genetic Resources in a National Food Legume Program

Haddad

1984

Genetic Resources and Their Exploitation — Chickpeas, Faba Beans and Lentils

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A reproductive tetraploid Vicia faba L.

Cited by 20 publications

References 4 publications

Study and QTL mapping of reproductive and morphological traits implicated in the autofertility of faba bean

Study and QTL mapping of reproductive and morphological traits implicated in the autofertility of faba bean

Pollen production, pollen viability and autofertility in faba bean (Vicia fabaL.) and their relationship with realized paternal success

Utilization of Genetic Resources in a National Food Legume Program

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