Contribution and Stability of Yield Components of Diploid Hybrid Potato

Stockem, Julia; Vries, Michiel E. de; Nieuwenhuizen, Edwin van; Lindhout, P.; Struik, P.C.

doi:10.1007/s11540-019-09444-x

Cited by 23 publications

(26 citation statements)

References 33 publications

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“…Under temperate conditions, the major uncertainties are seedling (tuber) vigour and yields of hybrid cultivars. In a yield study with hybrid seedling tubers (derived from hybrid transplanted seedlings) as planting material, the highest yielding hybrids reached similar levels to the lowest yielding commercial cultivars grown from seed tubers (Stockem et al 2020). De Vries et al (2016) showed that the yield of transplanted hybrid seedlings in tropical conditions was 29 Mg/ha for the best performing hybrid.…”

Section: Introductionmentioning

confidence: 94%

“…In 2017, harvested tubers were sorted and analysed following a similar procedure as for the intermediate harvest; only the smallest tuber size class changed from ≤ 28 to > 20 and ≤ 28 mm (further referred to as: 20-28 mm). In 2018, tuber (1) Haulm removal was 7 days prior to tuber harvest number, size, FW and under water weight (UWW) were assessed using an automated tuber phenotyping line with a 3D camera, as explained by Stockem et al (2020). Tuber FW and UWW were assessed per net plot.…”

Section: Observations Measurements and Calculationsmentioning

confidence: 99%

“…Tuber dry-matter concentration was calculated from the total tuber FW and DW for both harvest times in 2017 and the intermediate harvest in 2018. For the final harvest in 2018, the tuber dry-matter percentage was derived from the UWW (Stockem et al 2020) and used to calculate the total DW of the tubers from the total FW. Harvest index (HI) was calculated as tuber DW divided by the DW of tubers plus aboveground haulm, except for final harvest 2017 where the haulm was not harvested and no HI was calculated.…”

Section: Observations Measurements and Calculationsmentioning

confidence: 99%

“…The tubers produced in the present experiments can serve as seedling tubers for producing a seed tuber crop in the second season and ware crop in the third season (Fig. 1) or can be planted for directly producing a ware crop in the second season as done by Stockem et al (2020). Producing ware tubers from hybrid TPS in only two or three seasons decrease considerably the number of generations compared with the conventional seed tuber multiplication system, which is beneficial for the crop's health (Struik and Wiersema 1999;Lammerts van Bueren and Van Loon 2011;Tiemens-Hulscher et al 2013;Almekinders et al 2014;Thomas-Sharma et al 2016).…”

Section: Yield Levels Of Hybrid Potato Crops From Transplanted Seedlingsmentioning

confidence: 99%

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Hilling of Transplanted Seedlings from Novel Hybrid True Potato Seeds Does Not Enhance Tuber Yield but Can Affect Tuber Size Distribution

Dijk

Lommen

Vries³

et al. 2020

Potato Res.

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A novel cropping system for potato was tested for two consecutive years under normal Dutch agronomic conditions. Seedlings from two experimental genotypes of hybrid true potato seeds were produced in a greenhouse nursery and transplanted into the field 5 weeks after sowing to assess tuber yield levels and to study effects of hilling on tuber yield and number, tuber size distribution and tuber greening. Field experiments had a split-plot design with hilling treatments as the main plots and genotypes as the sub-plots. Final harvest was at 122 and 132 days after transplanting in 2017 and 2018, respectively. Hybrid seedlings were transplanted into small initial ridges and irrigated straight after planting. Three hilling treatments were applied between transplanting and 100% canopy cover. Treatment ‘zero hilling’ did not receive any additional hilling after transplanting. Treatments ‘double hilling’ and ‘triple hilling’ received two and three additional hilling treatments, respectively. Total tuber yields at final harvest in both years were not affected by the hilling treatments. Yields for the respective genotypes were 26 and 30 Mg/ha in 2017 and 25 and 32 Mg/ha in 2018. Total tuber numbers were only affected by hilling treatments in 2017, where under hilled conditions, plants produced more tubers compared with plants under zero hilling. Plants under zero hilling yielded more tubers in size class > 40 mm compared with triple hilling in 2017. In 2018, no significant effects of hilling on tuber numbers were found, but the trend was similar to that in 2017.

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“…Complex traits can be easily fixed in diploid inbreds, allowing for a more efficient selection and stacking of traits ( Su et al 2020 ). ( Stockem et al 2020 ) showed that experimental diploid hybrids were comparable in stability to tetraploid checks for different traits under field conditions, with some diploid hybrids yielding comparably to the worst performing checks. The genetic mapping of traits in diploid biparental segregating populations based on contrasting parents is more straightforward than in tetraploids because of the simpler genetics.…”

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confidence: 99%

Solyntus, the New Highly Contiguous Reference Genome for Potato (Solanum tuberosum)

Lieshout

Burgt²,

Vries³

et al. 2020

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With the rapid expansion of the application of genomics and sequencing in plant breeding, there is a constant drive for better reference genomes. In potato (Solanum tuberosum), the third largest food crop in the world, the related species S. phureja, designated "DM", has been used as the most popular reference genome for the last 10 years. Here, we introduce the de novo sequenced genome of SolyntusTM as the next standard reference in potato genome studies. A true Solanum tuberosum made up of 116 contigs that is also highly homozygous, diploid, vigorous and self-compatible, SolyntusTM provides a more direct and contiguous reference then ever before available. It was constructed by sequencing with state-of-the-art long and short read technology and assembled with Canu. The 116 contigs were assembled into scaffolds to form each pseudochromosome, with three contigs to 17 contigs per chromosome. This assembly contains 93.7 % of the single-copy gene orthologs from the Solanaceae set and has an N50 of 63.7 Mbp. The genome and related files can be found at https://www.plantbreeding.wur.nl/Solyntus/. With the release of this research line and its draft genome we anticipate many exciting developments in (diploid) potato research.

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Contribution and Stability of Yield Components of Diploid Hybrid Potato

Cited by 23 publications

References 33 publications

Hilling of Transplanted Seedlings from Novel Hybrid True Potato Seeds Does Not Enhance Tuber Yield but Can Affect Tuber Size Distribution

Solyntus, the New Highly Contiguous Reference Genome for Potato (Solanum tuberosum)

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