초록

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참깨의 재배환경 차이에 따른 광합성능력의 변화를 검토코저 참깨의 품종별, 파종기에 따른 광합성과 재식거리, 차광정도 잎의 부위별 광합성을 측정한바, 다음과 같은 결론을 얻었다. 1. 참깨의 품종간에는 개화전에는 단경형의 풍년깨가 광합성이 높았으나, 개화기부터는 반대로 분지형의 광산깨가 높았으며, 생육시기별로는 파종후 3주가 가장 높았다. 2. 차광정도별 광합성능력은 파종후 4주에는 70% 차광구를 제외한 35%, 55%차광구 모두 무차광과 비슷하였으나, 개화시부터는 무차광>35%> 70%차광 순으로 차광정도가 높을수록 광합성은 저하되었다. 3. 참깨의 잎부위별 광합성은 파종후 10일 (본엽3교)에는 중위엽>상위엽>하위엽 순으로 광합성이 높았으나, 파종후 3주이후부터는 잎의 부위는 높을수록 광합성이 높았다. 4. 파종후 6주까지는 재식거리에 따라 광합성의 차이가 없었으나, 6주후부터는 60${\times}$15cm> 50${\times}$10cm>40${\times}$7.5cm의 순으로 소식일수록 광합성이 높았다.

Abstract ▼ AI-Helper

Photosynthetic rate of sesame varieties was investigated under the different cultural environments such as planting density or light intensity. The photosynthetic rate of Pungnyeon, monoculm variety, was higher than that of Kwangsan before flowering stage, while it was vice versa after the flowering...

Photosynthetic rate of sesame varieties was investigated under the different cultural environments such as planting density or light intensity. The photosynthetic rate of Pungnyeon, monoculm variety, was higher than that of Kwangsan before flowering stage, while it was vice versa after the flowering stage. The maximum rate of photosynthetic rate was obtained three weeks after planting. The effects of light intensity on photosynthetic rate four weeks after planting was not apparent when the light intensity was reduced to the level of 35% and 55%, respectively. However, when the light intensity was reduced to 75% of the normal light intensity, the photosynthetic rate was also greatly reduced. The Photosynthetic rate after the flowering stage was reduced in the order of normal light, 35% and 75%, respectively.