天門冬屬四種觀葉植物種子發芽之研究

Studies on Seed Germination of Four Asparagus spp.

郭宏遠(Horng-Yeuan Kuo) ； 李哖(Nean Lee)

《植物種苗》 8卷4期 (2006/12) Pp. 49-62

https://doi.org/10.30077/SN.200612.0004

摘要

文竹、垂葉武竹、狐尾武竹和松葉武竹等四種天門冬屬種子皆有發芽不整齊之現象，種子發芽均需黑暗。最適發芽溫度為26±2℃的溫度下，播種於介質的發芽率在68~86%之間，而文竹的發芽率略低。種子播於根基旺、Fafard 1-P及Fafard Growing Mix No.1等不同介質之發芽表現類似。播種前以0.1% NaOCl消毒30分鐘，再以1000 ppm Benlate進行介質澆灌可減少種子發霉率而提昇其在介質中的發芽率。以-1.05~-1.15MPa PEG6000溶液於25℃下滲調三週可以顯著縮短松葉武竹發芽天數，提高發芽整齊度及發芽率。

關鍵字

天門冬屬 ； 種子發芽 ； 滲調

並列摘要

Germination was not uniform in seeds of four Asparagus spp., namely Asparagus plumosus 'Nanus', A. densiflorus 'Sprengeri', A. densiforus 'Myers' and A. myriocladus. The seeds should be germinated under dark conditions for good germination. Germination rate was similar for seeds sown in three media: King Roots, Fafard 1-P, and Fafard Mix No.1. Decay percentage was reduced and germination percentage was improved by soaking the seeds in 0.1% NaOCl solution for 30 minutes, and then sown in medium treated with 1000ppm Benlate. Priming seeds of A. myriocladus in osmotic solution of PEG6000 at -1.05~-1.15MPa for 3 weeks reduced the time for germination, and improved uniformity of germination and germination percentage significantly.

並列關鍵字

Asparagus ； seed germination ； priming