참당귀(當歸)의 생육단계(生育段階)에 따른 $GA_3$, IAA 및 ABA의 함양변화(含量變化)를 구명(究明)하여 생육조절물질(生長調節物質)을 이용(利用)한 추대억제방법(抽臺抑制方法)의 확립(確立)을 위한 기초자료(基礎資料)로 활용(活用)하고자 실험(實驗)한 결과(結果)를 요약(要約)하면 다음과 같다. 1. $GA_3$ 함양(含量)은 개화전기(開花前期)에 4.87mg/kg으로 가장 높은 수치(數値)를 보였으며 이 시기(時期)를 중심(中心)으로 하여 전(前) . 후단계(後段階)로 갈수록 감소(減少)하는 경향(傾向)이었다. 2. IAA의 함양(含量)도 개화전기(開花前期)에 2.27mg/kg으로 가장 높은 경향(傾向)이었고 그 전(前) . 후단계(後段階)로 갈수록 0. 15 -0.33mg /kg 수준(水準)으로 감소(滅少)하였다. 3. ABA는 생육단계(生育段階)가 진전(進展)됨에 따라 점진적(漸進的)으로 증가(增加)하여 결실기(結實期)에 0.37mg/kg으로 가장 높았다. 그리고 개화기(開花期)에는 일시적(一時的)으로 감소현상(減少現像)을 보였다.
This study was carried out to observe the changes in $gibberellin(GA_3)$, indol-3 acetatic acid(IAA) and abscisic acid(ABA) contents known as plant growth regulators in the leaves of Angelica gigas and to get the basic information for the establishment of cultural practice for the inhibition of floral induction. Changes in $GA_3$, IAA and ABA contents were investgated at different growth stage in the young flag leaves of two year old plants.The contents of $GA_3$ showed the highest value by 4. 87mg /kg at early flowering stage, and those were gradually increased from vegetative stage to early flowering stage, but greatly decreased from early flowering stage to fruiting stage. The contents of IAA were also the highest by 2. 27mg /kg at early flowering stage. The contents of ABA were gradually increased along with the development of growth stage. In the fruiting stage those were the highest value by 0.37mg /kg and in early flowering stage the contents were decreased temporarily.
