전엽이 팔당호밀과 신기호밀의 종실발육에 미치는 영향

Effect of Defoliation on Seed Development of Rye and Triticale Cultivar

팔당호밀과 신기호밀에 대한 전엽시기와 전엽정도가 종실의 발육에 미치는 영향을 구명코자 시험을 실시한 결과를 요약하면 다음과 같다. 1. 엽신중은 2엽, 3엽, 지엽 경으로 무거웠다. 2. 엽록소함량은 지엽, 2엽, 3엽 순으로 높았으며, 엽소도 같은 경향이었고 신기호밀보다 팔당호밀에서 높았다. 3. 립중은 전엽시기가 늦고 전엽정도가 적을수록 무거웠다. 4. 엽신들의 생산효과는 지엽, 2엽, 3엽 순으로 높았다. 5. 이삭부위별 립중은 중부, 하부, 상부 순으로 무거웠다.

This study was carried out to elucidate the effect of different time and severity of defoliation on the dry matter accumulation in grain of rye (cv, Paldanghomil) and triticale (cv, Sinkihomil). The weight of the 2nd leaf blade was the greatest and this was followed by the 3rd and flag leaf in that order. The chlorophyll content in leaf blade and sheath were decreased at lower leaf position (flag > 2nd > 3rd). The average chlorophyll content of rye was higher than that of triticale. The earlier and severer defoliation was made, the more grain weight was its was decreased. As the time of defoliation was made later and the degree of its was small, 1,000 grain weight was increased. The results showed that the effect of defoliation on 1,000 grain weight followed the order of the flag, the 2nd and the 3rd leaf. The greatest 1,000 grain weight was observed at the middle part of panicle, which followed by the top and bottom part in that order.