文心蘭蒴果和胚的成熟度對種子發芽之影響

Effect of Capsule and Embryo Maturity on Seed Germination of Oncidium

易美秀(Meei-Shiou Yih) ； 王才義(Tsai-Yih Wang) ； 蔡宛育(Woan-Yuh Tsai)

《臺中區農業改良場研究彙報》 86期 (2005/03) Pp. 37-45

https://doi.org/10.6956/BTDAIS.200503.0037

摘要

本研究的目的在探討蒴果和胚成熟度對文心蘭種子發芽之影響。觀察文心蘭種間交配授粉後不同時期種子的縱切面發現，授粉後45日內，外珠被形成，授粉後60日胚囊形成，90日胚發育為原胚，120日胚細胞數持續增加，授粉後150日或158日胚可分為大、小兩種細胞區。文心蘭種間交配後所得在60日及90日成熟度的種子不具發芽能力，120日始具發芽能力。150日或158日蒴果轉黃時，發芽率最高。

關鍵字

文心蘭 ； 授粉後日數 ； 胚發育

並列摘要

The purpose of this research was to investigate the effect of capsule and embryo maturity on seed germination of Oncidium. Longitudinal section of seeds on different days after interspecific pollination were observed. The outer and inner integument formated after 45 days of pollination as well as mature embryo sac formatted after 60 days of pollination. The proembryo developed at 90 days after pollination. The cells of embryos increased continuously at 120 days after pollination. The embryo divided: small and large cell regions at 150 or 158 days after pollination. Seeds of 60, 90 days after interspecific pollination were not able to germinate. Seeds of 120 days after pollination germinated. The highest germination of seeds were from capsules turned greenish yellow, i.e. at 150 or 158 days after pollination.

並列關鍵字

Oncidium ； days after pollination ； embryo development