보리 栽培에 미치는 Ethephon의 作用과 倒伏防止에 關한 硏究 = A Study on the Effects of the Ethephon Treatment on the Lodging Control in Barley Cultivation

국문 초록 (Abstract)

本 硏究는 晋州産業大學校 學生 實習圃場에서 1992年 10月부터 1993年 6月까지 새쌀보리를 供試品種으로하여 ethylene 가스 發生劑인 ethephon으로 處理水準을 1,000倍, 1,500倍液으로 하고 處理時期는 伸長期, 穗孕期, 出穗期에 葉面撤布하여 生育 및 收量을 調査한바 그 結果를 要約하면 다음과 같다.
1. ethephon의 伸長期 處理時는 無處理區에 비하여 出穗期는 3日, 成熟期는 1일 程度 短縮되었다.
2. 稈長은 無處理區에 比하여 ethephon 1,000倍液 處理區에서 伸長期12cm, 穗孕期 11cm, 出穗期 7cm 程度 短縮效果를 나타내었고 1,500倍液 處理區에서는 伸長期, 穗孕期에 各各 10cm程度 작아졌다.
3. 節稈長에 있어서는 伸長期 處理時에는 1∼3節, 穗孕期 處理時에는 1∼2節이 많이 短縮되었다.
4. 倒伏에 있어서는 無處理區와 出穗期 ethephon 處理區는 倒伏이 多少있었으나 伸長期, 穗孕期의 處理區는 共히 倒伏이 없었다.
5. 粒數는 ethephon 處理區가 無處理區보다 많았고 千粒重은 비슷한 傾向이었으나 全體 種實重은 ethephon처리로 인하여 4∼20%의 增收를 나타내었다.

다국어 초록 (Multilingual Abstract)

The purpose of this study is to examine the growth and yield of new naked barley treated with ethephon. The levels of ethephon treatment were 1,000 and 1,500 times as basic level, and the time of its treatment was stretcher, booting time and heading date.
1. The stretcher appeared 3 days earlier and the booting time 1 day respectively, compared with that of non-treatment by making an ethephon treatment.
2. The culm length was shortened 12cm at the stretcher, 11cm at the booting time and 3cm at the heading date in the 1,000 times treatment plot, compared with that of non-treatment plot, appearing 10cm respectively at the stretcher and the booting time in 1,500 times.
3. The internode elongation was shorter in 1∼3 node at the stretcher time treatment and 1∼2 node at the booting time treatment.
4. A little lodging appeared in the non-treatment plot and the heading date ethephon treatment plot, but no lodging in the stretcher and the booting time treatment plots.
5. The grain numbers per spikelet increased at the ethephon treatment compared with that of the non-treatment. The thousand grains showed no difference. The whole yield increased by 4∼20% in the ethephon treatment.