Abstract
Fertilization mode, that is random, selective cross- or selective self-fertilization after mixed pollination (pollination with equal mixture of outcross and self pollen) was investigated for 6 clones of Larix gmelinii var. japonica. The seed fertilities expressed as proportions of filled seeds and germinatible seeds for the numbers of full size-seeds per cone after mixed pollination were examined, and these were compared with those resulting from complete outcross- and self-pollination. Five clones showed significant inbreeding depression in seed fertility. For 4 clones, fertilities of seeds from mixed pollination were similar to those resulting from cross-pollination, suggesting selective cross-fertilization. Selective cross-fertilization is possibly one of factors which causes a high outcrossing rate in coniferous tree species. For 1 clone, the fertility of seeds from mixed pollination was similar to that resulting from self-pollination in 1993, suggesting selective self-fertilization. This clone, however, showed random fertilization in 1995, that is to say, fertility of seeds after mixed pollination was between seed fertility from cross-pollination and that from self-pollination. This was not significantly different from the expected fertility from random fertilization between cross and self pollen. The limitation of outcross pollen caused by a decrease of effective population size was considered as a possible factor which allows the existence of some selfers in coniferous tree species.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 7
Claim · model-written summary
Five of six Larix gmelinii var. japonica clones showed significant inbreeding depression in seed fertility.
- Taxon
- Larix gmelinii var. japonica
Larix gmelinii var. japonicat0 - Outcome
- inbreeding depression in seed fertilitye0
- Value
- Five clonese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Larix gmelinii var. japonica”
e0“Five clones showed significant inbreeding depression in seed fertility”
Claim · model-written summary
In four clones seed fertility after mixed pollination was similar to that after cross-pollination, suggesting selective cross-fertilization.
- Taxon
- Larix gmelinii var. japonicaLarix gmelinii var. japonicat0
- Treatment
- mixed pollinatione0
- Outcome
- fertilities of seedse0
- Direction
- similare0
- Comparator
- cross-pollinatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Larix gmelinii var. japonica”
e0“For 4 clones, fertilities of seeds from mixed pollination were similar to those resulting from cross-pollination, suggesting selective cross-fertilization”
Claim · model-written summary
Selective cross-fertilization is possibly one of the factors causing a high outcrossing rate in coniferous tree species.
Verbatim
e0“Selective cross-fertilization is possibly one of factors which causes a high outcrossing rate in coniferous tree species”
Claim · model-written summary
In one clone in 1993, seed fertility after mixed pollination was similar to that after self-pollination, suggesting selective self-fertilization.
- Taxon
- Larix gmelinii var. japonicaLarix gmelinii var. japonicat0
- Treatment
- mixed pollinatione0
- Outcome
- fertility of seedse0
- Direction
- similare0
- Qualifier
- in 1993e0
- Comparator
- self-pollinatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Larix gmelinii var. japonica”
e0“For 1 clone, the fertility of seeds from mixed pollination was similar to that resulting from self-pollination in 1993, suggesting selective self-fertilization”
Claim · model-written summary
The same clone showed random fertilization in 1995, with seed fertility after mixed pollination between that of cross- and self-pollination.
- Taxon
- Larix gmelinii var. japonicaLarix gmelinii var. japonicat0
- Outcome
- random fertilization in 1995e0
- Setting
- 1995e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Larix gmelinii var. japonica”
e0“This clone, however, showed random fertilization in 1995, that is to say, fertility of seeds after mixed pollination was between seed fertility from cross-pollination and that from self-pollination”
Claim · model-written summary
In 1995 the seed fertility of that clone was not significantly different from the fertility expected under random fertilization between cross and self pollen.
- Taxon
- Larix gmelinii var. japonicaLarix gmelinii var. japonicat0
- Outcome
- expected fertility from random fertilizatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Larix gmelinii var. japonica”
e0“This was not significantly different from the expected fertility from random fertilization between cross and self pollen”
Claim · model-written summary
A limitation of outcross pollen caused by a decrease of effective population size was considered a possible factor allowing some selfers to exist in coniferous tree species.
Verbatim
e0“The limitation of outcross pollen caused by a decrease of effective population size was considered as a possible factor which allows the existence of some selfers in coniferous tree species”