Effects of Fertilization Methods on Ethylene Evolution and Shattering in Rice Grains

시비법의 벼의 탈입과 Ethylene 생성에 미치는 영향

The relationship between the rates of rice grain shattering caused by typhoon and characteristics considered to be related with grain shattering such as heading date, amount of grain production and ethylene evolution of rice plant grown under the different methods of fertilization was analyzed. The grain shattering rates which was traced by the fallen grains after typhoon 'Dinah' occured in August 28 to 29, 1987, in the plots with nitrogen such as nitrogen alone, NP, NK, NPK, NPK + SiO$_2$ and NPK+compost plot etc. was lower than that in without nitrogen plots such as no fertilizer, compost alone, PK, P and K alone etc. and the amount of ethylene evolved from the leaf blades also showed the same trends. The correlation between the grain shattering rate and grain yield was negative but ethylene evolution was positively correlated with grain shattering rate of rice plant.ice plant.

시비법을 달리하여 재배된 벼가 태풍(벼 등숙기인 8월 28~29일) 피해로 인하여 일어났던 탈리정도의 차이를 분석코자 가 시험구의 출수기, 수량 및 에틸렌 생성량 등과의 관계를 검토한 결과는 다음과 같다. 1. 질소첨가 시비구(질소단용구, NP구, NK구, NPK+SiO$_2$구, NPK+퇴비구)는 질소무첨가 시비구(무비구, 무비+퇴비구, 무질소구, P단용구, K단용구)보다 탈입율이 낮았고 에틸렌 생성량도 낮았다. 2. 수도의 시비법에 따른 에틸렌 생성량과는 정의 유의상관(r=0.718*)을 곡실수량과는 부의 유의상관(r=-0.858**)을 보였다.