カキ西条における受粉・受精が着果に及ぼす影響

島根大学農学部研究報告 Volume 16 Page 8-13 published_at 1982-12-20
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Title
カキ西条における受粉・受精が着果に及ぼす影響
Title
Effects of Pollination and Fertilization on Fruit Set in "Saijo" Japanese Persimmon
Title Transcription
カキ サイジョウ ニオケル ジュフン ジュセイ ガ チャッカ ニ オヨボス エイキョウ
Creator
Yamamura Hiroshi
Source Title
島根大学農学部研究報告
Bulletin of the Faculty of Agriculture, Shimane University
Volume 16
Start Page 8
End Page 13
Journal Identifire
ISSN 0370940X
Descriptions
In order to know the factors affecting fruit set in Saijo Japanese persimmon, effects of pollination on seed formation and fruit set were compared among 3 cultivars, Saijo, Fuyu and Hiratanenashi in relation to the morphological differences of flower organs among them.
1. Saijo had shorter style and ovary than the other 2 cultivars and its stigma was not exposed out of the cylindrical petals at anthesis. Such a flower type of Saijo may be less favorable for the pollinating activity of insects than those of the others.
2. When pollinators were excluded from the branches by bagging to examine parthenocarpic ability, the percentages of fruit set in Saijo, Fuyu and Hiratanenashi were 20, 28 and 78, respectively.
3. Under the condition of open pollination, the rate of seeded (fertilized) fruits in Saijo was 50% which was about 10% lower than those in the others, but as to the percentage of fruit set, large differences were not observed among the 3 cultivars. The number of seeds per seeded fruit was 2.3 in Saijo and 4.0 in Fuyu.
4. The rate of seeded (fertilized) fruits in each cultivar was much increased by hand pollination, i. e., it was 96.3% in Hiratanenashi, followed by 96.3% in Saijo and 93.9% in Fuyu. The rate of fruit set was also raised by hand pollination in each cultivar and Saijo showed the highest rate (91.9%) among them. The number of seeds per seeded fruit was 3.1 in Saijo and 4.7 in Fuyu. Thus, Saijo was inferior to Fuyu in the number of seeds per seeded fruit when pollinated by hand although hand pollination was more effective for preventing fruit drop in the former than in the latter.
Language
jpn
Resource Type departmental bulletin paper
Publisher
島根大学農学部
Shimane University, Faculty of Agriculture
Date of Issued 1982-12-20
Access Rights open access
Relation
[NCID] AN00108015