MISC

2006年3月

The sex changing plant Arisaema sikokianum Franch. et Siva (Araceae) is self-compatible

PROPAGATION OF ORNAMENTAL PLANTS
  • S Fukai
  • ,
  • A Hasegawa
  • ,
  • T Kobayashi

6
1
開始ページ
39
終了ページ
43
記述言語
英語
掲載種別
出版者・発行元
SEJANI PUBLISHER

Arisaema sikokianum Franch. et Sav. (Araceae) is one of the most beautiful ornamental Arisaema species. Species in this genus demonstrate a unique sexual dimorphism based on corm size. When the corm size is small the sex expression is male, and it changes to female as the corms enlarge. Because of this strict size-based sexual dimorphism, there is no experimental evidence that Arisaema species are capable of self-fertilization. Pollen harvested from several different male plants of A. sikokianum was stored at 4 degrees C, -20 degrees C in a cryostat, and -196 degrees C in liquid nitrogen (LN2) for 30 days, 6 months, and 1 year. Then the viability of the pollen was estimated by pollen germination. Only the pollen stored in LN2 retained high viability after one year of storage. In order to verify self-compatibility in A. sikokianum, pollen that was collected from several male plants and cryopreserved for a year was used to pollinate the same plants when the sexual expression of the plants converted to female. Both self- and cross-pollinated spadices produced seeds, indicating that A. sikokianum is self-compatible. Self-pollinated spadices produced fewer fruits with fewer seeds compared with cross-pollinated spadices. Self-pollinated seeds germinated more slowly at 20 degrees C in the dark. No clear differences in corm weight were observed between self- and cross-pollinated seedlings.

リンク情報
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000236165400005&DestApp=WOS_CPL
ID情報
  • ISSN : 1311-9109
  • Web of Science ID : WOS:000236165400005

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