KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Optimum Sowing date for Seed Production of Late-maturing Vegetable Perilla at Green House of Middle Region

중부지역에서 잎들깨 품종의 종자생산을 위한 비닐하우스 재배 적정파종기

  • Received : 2012.08.12
  • Accepted : 2012.09.11
  • Published : 2012.09.30
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Abstract

The vegetable perilla is proved to be a late-maturing plant that flowers at the early of Oct. regardless of sowing time, so that the sowing time for seed production should be decided under consideration of maturity before beginning of frost. This experiment was carried out to determine the sowing date for seed production at greenhouse on late-maturing perilla cultivar, 'Ipdlkkae 1' in the middle region of Korea. The sowing dates were 8 times from May 6 to July 15 with an intervals of 10 days. As sowing date was delayed, the stem height, no. of nodes, no. of branches, no. of cluster per plant and no. of capsules per cluster were decreased. But as sowing was early, the lodging was occurred because of heavier growing. Days to flowering was linearly decreased about 0.86 day as affected by a day's delayed. But days from flowering to maturing was not significantly affected by sowing date. The grain yield was not significantly different among sowing from May 6 to June 15 and rapidly decreased the sowing after June 25 because of the reductions of no. of cluster and percent of ripened grain. Considering accumulative temperature, lodging, germination rate and grain yield, it is suggested that the sowing for seed production in late-maturing perilla cultivar should be finish before June 15 (transplanted at July 15) at greenhouse in the middle region of Korea.

들깻잎 생산 전용품종은 대부분 만생종으로서 우량종자를 채종하고자 할 경우 도복 등이 발생하지 않아 생육관리가 용이하면서 종실 충실도가 높은 파종적기를 설정할 필요가 있다. 이에 중부지역 비닐하우스에서 잎들깨 생산 전용 품종 '잎들깨 1호'를 시험재료로 하여 5월 6일부터 7월 15일 까지 10일 간격으로 8회 파종하여 생육, 도복 발생 여부, 적산온도 및 수량성을 분석하였다. 1. 파종시기가 늦을수록 경장이 짧아지고, 주경절수, 분지수, 화방군수와 화방당 삭수는 감소되었다. 그러나 파종시기가 빠를수록 지상부 생육이 왕성하여 도복이 발생하였다. 2. 개화일수는 파종시기가 늦어질수록 직선적으로 감소되었는데 5월 6일을 기준으로 파종이 1일 지연되면 개화일수는 0.86일씩 단축되었고, 개화기부터 성숙기까지의 결실일수는 29~31일로 파종기 이동에 따른 차이가 없었다. 3. 등숙립율과 종실수량은 5월 6일 파종부터 6월 15일 파종까지 유의성이 없었고, 6월 25일 파종 이후부터 급격히 감소되었다. 4. 등숙에 필요한 적산온도, 도복 발생 여부, 등숙립율과 발아율 등으로 판단하면 만생종 잎들깨 품종의 중부지역 비닐하우스에서 파종적기는 6월 5일(정식 7월 5일)~6월 15일(정식 7월 15일)이었고, 이때 10월 28일~11월 3일경에 성숙되어 종자생산이 가능하였다. 5. 연차에 따라 $0^{\circ}C$ 이하로 떨어지는 시기가 일찍 오는 경우 한해에 의하여 노지재배는 고사될 우려가 있고, 중부지역에서는 비닐하우스를 이용한 잎들깨 채종재배가 가능하였다.

Keywords

References

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