Studies of Physiological Action of Chemicals to Increase in Ripening of Rice Plant. I. Effect of Growth Regulators on Ripening of Rice Plant

수도등숙 향상을 위한 생리생태 연구 제 1 보 생장조절제 처리가 수도등숙에 미치는 영향

  • Seo, G.S. (Chung-nam Provincial Office of Rural Development) ;
  • Lee, J.Y. (Chung-nam Provincial Office of Rural Development) ;
  • Kim, S.Y. (Chung-nam Provincial Office of Rural Development) ;
  • Ota,Yasuo (Institute of Agricultural Sciences)
  • Published : 1983.07.01

Abstract

This experiments were carried out to know the effect of ripened grain under low temperature ($20^{\circ}C/13^{\circ}C$) and out door condition when 2 chemicals including. Dachigaren were applied at 7-8 days before heading and heading stage. Low temperature plot is more effective than out door temperature plot to chemicals. Secondary tillers is more effective than primary tillers to chemicals. SZ8028+ABA is the most effective chemical than Dachigaren and SZ8028. SZ8028+ABA is the most effective chemical regardless of low or high temperature to ripeness. Iri 327 is higher than Jinheung.. The plot of SZ8028+ABA or Dachigaren applied is higher than SZ8028 or control at 0-20% of sterile. Percentage of hulled rice above 2.0mm was increased 87.6% of Dachigaren, 88.7% of SZ8028 90.2% of SZ8028+ABA compared with 83.4% of control.

수도품종 밀양2003, 이리327호 진흥을 공시하여 출수기를 전후한 저온시 등숙 향상을 위해 다찌가렌, SZ8028, SZ8028+ABA를 출수기와 소포자초기에 살포한 후 저온($20^{\circ}C/13^{\circ}C$)과 외온에서 각각의 약효를 검토한 결과 다음과 같다. 1) 약제처리시기는 출수기보다 출수 1주전 즉 소포자초기 또는 지경의 위치로는 2차지경 착생영화는 1차지경 착생영화보다 약효가 컸다. 2) 저온구와 외온구 공히 악제별로는 SZ8028+ABA > 다찌가렌 > SZ 8028 순으로 임실율 및 립종이 증가되었다. 3) 소포자초기에 SZ 8028+ABA와 다찌가렌 살포구는 대조구보다 1차지경 착생영화는 2배, 2차 지경 착생영화는 3배 가량 임실율이 높아 약효가 인정되었다.

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