2012 Fiscal Year Final Research Report
Studies on inter-specific cross incompatibility of Jacarandaoriginated in tropical region
| Project/Area Number |
22580035
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Horticulture/Landscape architecture
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| Research Institution | Kyushu University |
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Principal Investigator |
MIYAJIMA Ikuo 九州大学, 熱帯農学研究センター, 准教授 (20182024)
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| Co-Investigator(Kenkyū-buntansha) |
KOBAYASHI Nobuo 島根大学, 生物資源科学部, 教授 (00362426)
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| Project Period (FY) |
2010 – 2012
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| Keywords | 花卉 / 熱帯花木 / 種間交雑不和合性 |
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| Research Abstract |
We attempted interspecific crossing between J. mimosifoliaand J. cuspidifolia. A relatively high frequency of fruit set was observed in crosses of J. mimosifoliax J. cuspidifolia, whereas very little fruit set was observed in the reciprocal cross (J. cuspidifoliax J. mimosifolia). Based on microscopic observations, pollen tubes penetrated the style and reached the ovary in crosses of J. mimosifoliax J. cuspidifolia. On the other hand, few pollen tubes reached the ovary in J. cuspidifoliax J. mimosifolia crosses. Thus, it seems that pollen tube penetration was restricted in pistils somehow in this cross combination and few fertile seeds were obtained as a result.
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