Effect of Topping Method on the Quality Components of Flue-cured Tobacco

연초의 적심방법이 품질구성형질에 미치는 영향

This experiment was carried out to obtain the basic information for the improving of leaf quality by topping time and depth in flue-cured tobacco. Development of palisade parenchyma and spongy parenchyma were in order of button stage＆gt;early flower stage＆gt;late flower stage by topping time, and were in order of 4th leaf topping from floral axis＆gt;2nd leaf topping from floral axis＆gt;floral axis by topping depth. When 2nd leaf from floral axis were topped at late flower stage in A grade field and at early flower stage in B grade field, total sugar to nicotine ratio ralating to organoleptic characteristics were desirable as 9.0 and 9.7, and petroleum ether extract contents relating flavor of flue-cured tobacco were high as 9.9% and 8.4%, respectively. In ecological tissue, percentage of direct effect on quality were 43.2% in palisade parenchyma. 26.5% in spongy parechyma. 17.7% in tissue ratio, 6.7% in leaf thickness, 3.1% in intercellular space, 2.8% in leaf type and in chemical components, were 40.6% in nicotine. 35.7% in T-sugar/nicotine, 10.0% in total sugar, 7.0% in T-nitrogen/nicotine, 4.6% in total nitrogen, 2.1% in petroleum ether extract. The optimum topping depth were desirable at topping under second leaf from floral axis at late flower stage in A grade field and at early flower stage in B grade field for good leaf quality.

본 시험은 연초의 생육작황에 따라서 적심시기와 정도를 두어 처리하였을 때 잎담배의 품질형질에 미치는 영향을 구명코자 수행하였던 바 다음과 같은 결과를 얻었다. 1. 책상조직 및 발달은 적심시기에 따라 발뢰기＆gt;개화시＆gt;개화만기＆gt; 만기 순으로 적심정도에 따라서는 치엽 4매＆gt; 치엽 2매＆gt; 화뢰 적심 순으로 발달되었다. 2. A급작황에서는 개화만기 B급작황에서는 개화시 치엽 2매를 적심할 때 끽미에 관련있는 전당/니코틴의 비는 9.0, 9.7로 가강 양호하였으며, 방향성 물질인 석유에텐추출물을 9.9%, 8.4%로 가장 높게 나타났다. 3. 품질에 크게 영향하는 요인은 생태조직과 건조엽중 내용성분으로 생태조직의 구성형질들이 품질에 직접 영향하는 효과를 보면 책상조직 43.2%, 해면조직 26.5%, 조직비 17.7%, 엽후 6.7%, 세포간극율 3.1 %, 엽형지수 2.8% 순이며, 내용성분 형질은 니코틴 40.6%, 전당/니코틴 35.7%, 전당 10.0%, 전질소/니코틴 7.0% 전질소 4.6%, 석유 에텔추출물 2.1% 순으로 품질에 영향을 미쳤다. 4. 양질엽 생산을 위해서는 수량이 10a당 250∼280kg 생산되는 A급작황에서는 개화만기에 치엽 2매 적심을, 200kg 내외 생산되는 B급작황에서는 개화시 치엽 2매를 붙여 적심하는 것이 가장 바람직 할 것으로 생각된다.