Abstract
Haploid x wild species hybrids (2n = 2x = 24) provide a means of capturing the germ plasm of the 2x, 2EBN wild Solatium spp. in a form in which it can be maintained and evaluated. 2n pollen allows introgression of germ plasm from haploid × wild species hybrids into cultivars through 4x x 2x crosses. 2n pollen-producing and non-2n pollen-producing hybrids were compared from the same population in regard to seven agronomic and breeding characteristics to determine appropriate selection strategies. Early in the growing season, the 2n pollen producers are significantly more vigorous and flower significantly more; however, by the latter part of the growing season they do not differ from the non-2n pollen producers. The 2n pollen producers are also significantly later in maturity than are the non-2n pollen producers, suggesting that conscious selection for earliness is necessary within this material. No significant difference was observed between the two groups in terms of yield, specific gravity, tuber number, general tuber appearance, and percentage tuberization per family. Breeding, genetic, and evolutionary implications are discussed.
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Claims 5
Claim · model-written summary
Early in the growing season, 2n pollen-producing haploid x wild species hybrids were significantly more vigorous and flowered significantly more than non-2n pollen producers.
- Taxon
- Potato
Solanum tuberosumt0 - Material
- 2n pollen producerse0
- Outcome
- vigorous and flowere0
- Direction
- moree0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato”
e0“Early in the growing season, the 2n pollen producers are significantly more vigorous and flower significantly more”
Claim · model-written summary
By the latter part of the growing season the 2n pollen producers no longer differed from the non-2n pollen producers in vigor and flowering.
- Taxon
- PotatoSolanum tuberosumt0
- Material
- 2n pollen producerse0
- Outcome
- vigorous and flowere0
- Direction
- do not differe1
- Comparator
- non-2n pollen producerse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato”
e0“Early in the growing season, the 2n pollen producers are significantly more vigorous and flower significantly more”
e1“by the latter part of the growing season they do not differ from the non-2n pollen producers”
Claim · model-written summary
The 2n pollen producers were significantly later in maturity than the non-2n pollen producers.
- Taxon
- PotatoSolanum tuberosumt0
- Material
- 2n pollen producerse0
- Outcome
- maturitye0
- Direction
- latere0
- Comparator
- non-2n pollen producerse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato”
e0“The 2n pollen producers are also significantly later in maturity than are the non-2n pollen producers”
Claim · model-written summary
No significant difference was observed between 2n and non-2n pollen producers in yield, specific gravity or tuber number.
- Taxon
- PotatoSolanum tuberosumt0
- Outcome
- yield, specific gravity, tuber numbere0
- Direction
- No significant differencee0
- Comparator
- the two groupse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato”
e0“No significant difference was observed between the two groups in terms of yield, specific gravity, tuber number, general tuber appearance, and percentage tuberization per family”
Claim · model-written summary
No significant difference was observed between 2n and non-2n pollen producers in general tuber appearance or percentage tuberization per family.
- Taxon
- PotatoSolanum tuberosumt0
- Outcome
- general tuber appearance, and percentage tuberizatione0
- Direction
- No significant differencee0
- Comparator
- the two groupse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potato”
e0“No significant difference was observed between the two groups in terms of yield, specific gravity, tuber number, general tuber appearance, and percentage tuberization per family”