2012 Fiscal Year Final Research Report
Quantitative analysis of the diverse three-dimensional shapes of the corolla and their association with the regulation of petal cell expansion
| Project/Area Number |
21380025
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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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 | The University of Tokyo |
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Principal Investigator |
KAWABATA Saneyuki 東京大学, 大学院・農学生命科学研究科, 准教授 (10234113)
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| Project Period (FY) |
2009 – 2012
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| Keywords | トルコギキョウ / 花冠 / 花形 / 開花 / 花弁成長 / エクスパンシン |
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| Research Abstract |
Associations between petal growth patterns and the formation of three-dimensional corolla shapes were investigated in Eustoma grandiflorum. The cultivars showing outward curvature in the distal regions of petals exhibited a rapid distal widening during the later stages of flower opening, whereas the cup-shaped cultivars exhibited a rapid widening in the basal to middle regions of petals during earlier stages of flower development. In a funnel-shaped cultivar showing no apparent curvature, no regional differences in petal expansion were found. The data suggested that non-uniform cell expansion within a petal results in petal distortion, and this plays a central role in corolla curvature formation.
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