論文

査読有り
2008年10月

Growth characteristics of a small-fruit dwarf mutant arising from bud sport mutation in Japanese persimmon (Diospyros kaki thunb.)

HORTSCIENCE
  • Hisayo Yamane
  • ,
  • Megumi Ichiki
  • ,
  • Ryutaro Tao
  • ,
  • Tomoya Esumi
  • ,
  • Keizo Yonemori
  • ,
  • Takeshi Niikawa
  • ,
  • Hino Motosugi

43
6
開始ページ
1726
終了ページ
1730
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.21273/HORTSCI.43.6.1726
出版者・発行元
AMER SOC HORTICULTURAL SCIENCE

Fruit size is one of the most important traits that affect the economic value of fruit. In persimmon (Diospyros kaki Thunb.), somatic and bud-sport mutations that affect the fruit traits are frequently observed. Recently, a small-fruit mutant, 'Totsutanenashi' (TTN), was discovered in Japan as a bud-sport mutant of the leading cultivar Hiratanenashi (HTN). In this study, we investigated the morphological and physiological characteristics of TTN and HTN focusing on the tree architecture, fruit size, and the fruit flesh chemical composition. The objectives of the study were to evaluate the potential horticultural use of TTN and to characterize the differences between HTN and TTN. Both TTN and HTN are nonaploid plants, indicating that a difference in ploidy is not the cause of the small-fruit mutation. The vegetative growth of trees and tissue-cultured shoots of TTN was more compact than that of HTN. The floral organs of TTN appeared similar to those of HTN before flowering, but the TTN flowers opened earlier, resulting in smaller ovaries than in HTN flowers. The fruit size of TTN was consistently lower than that of HTN at all fruit developmental stages. TTN fruit had a higher sugar content and a higher proportion of sucrose to total sugars than HTN fruit. TTN fruits contained lower levels of secondary metabolites such as soluble tannins and ascorbate than HTN fruits. These results suggest that the fruit size mutation also affects the fruit biochemistry, leading to alterations in the fruit flesh composition. TTN may be a valuable genetic resource because compact trees require less labor and maintenance, and small, sweeter fruits may meet the various needs of consumers. The use of TTN in studies of the genetic control of fruit size is also discussed.

リンク情報
DOI
https://doi.org/10.21273/HORTSCI.43.6.1726
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000259483900022&DestApp=WOS_CPL
ID情報
  • DOI : 10.21273/HORTSCI.43.6.1726
  • ISSN : 0018-5345
  • Web of Science ID : WOS:000259483900022

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