| Project/Area Number |
07660028
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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 |
園芸・造園学
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| Research Institution | Tokyo University of Agriculture and Technology |
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Principal Investigator |
OGIWARA Isao Tokyo University of Agriculture and Technology, Fac.of Agrl., Assis.Prof., 農学部, 助手 (80204113)
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| Co-Investigator(Kenkyū-buntansha) |
HAKODA Naotoshi Tokyo University of Agriculture and Technology, Fac.of Agri., Assoc.Prof., 農学部, 助教授 (00014952)
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| Project Period (FY) |
1995 – 1996
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| Project Status |
Completed (Fiscal Year 1996)
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| Budget Amount *help |
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1996: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1995: ¥1,600,000 (Direct Cost: ¥1,600,000)
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| Keywords | Strawberry / sugar content / heritability / breeding / 糖 |
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| Research Abstract |
Studies on the heritability and genetic correlation of sugars in fruit were carried out to establish a reasonable breeding system of good tasting strawberry cultivars. Fructose, glucose and sucrose content of fruits were investigated at F_1 individuals grown in the forcing culture.
1. Additive genetic effects and heritability value in fructose and glucose were large. But heritability value in sucrose was small and additive genetic effect was not observed. Heritability value in broad sense in total sugar was 0.51 to 0.55.
2. There were negative phenotypic correlations between furctose or glucose and period of maturation. There were some positive genotypic correlations between sucrose or total sugar and plant length, number of leaves and leaf area.
On the breeding process for strawberry cultivars with high sugar content, firstly, parents which fructose and glucose contents have higher values should be selected. Secondly, through the test of parental combination ability, it should be practiced the selection of individual with high sugar content. And it seemed that the individual could be selected from the characters such as plant length, number of leaves and leaf area.
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