KOREAN JOURNAL OF CROP SCIENCE (한국작물학회지)

The Korean Society of Crop Science (한국작물학회)
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Growth Responses of Rice and Barnyardgrass Varieties to Flooding at Early Growing Period

벼와 피의 침관수에 따른 생장 반응

  • Received : 2014.07.21
  • Accepted : 2014.08.25
  • Published : 2014.09.30
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Abstract

Barnyard grasses are dominant weed that are not eliminated easily in the direct water seeding cultivation. So, deep water treatment can reduce their growth at the early growing stage of submerged paddy. This study was carried out to investigate the reducing growth of the barnyard grasses through flooding at seedling stages of rice plant in the green house. Under the normal condition, the plant height of rice variety, Samgwangbyeo, and 3 species of barnyard grass, E. caudata, E. pratocola and E. utilis were not showed the difference up to 10 days after seeding while the plant height of 3 barnyard grass species, especially E. utilis, was more elongated than the rice at 25 days after seeding. Plant height of the 3 barnyard grasses were not elongated largely during 3, 5 and 7 days of flooding treatment at 10 days after seeding. Interestingly, the rice seedlings was grown over 20 cm, and the flooding tolerance of rice seedling was higher than the 3 barnyard grass varieties. However, after flooding treatment for 3, 5 and 7 days, the elongation of plant height of 3 barnyard grasses, especially E. utilis was more speedy compared to rice seedlings as 6 to 9 days passes. And the protein spots from barnyard grasses were also reduced and eliminated more than the spots of rice seedling after flooding treatment.

본 연구는 벼 담수직파재배에서 벼와 피 종의 관수 처리 전 후의 생장 반응과 단백질 발현 양상에 대한 기초자료를 얻고자 수행하였다. 1. 벼와 피종들의 자연 상태에서의 파종후 10일 벼와 피종들의 초장은 10 cm 정도로 차이가 없었으나 파종후 25일부터는 벼에 비하여 피 종들의 초장이 더욱 현저하게 신장하였고, 피 종에서는 식용피의 초장이 현저히 신장되었다. 2. 벼와 피를 생육 초기에 관수하였을 때 벼의 초장은 관수후 3일에서 7일까지도 신장하였으나 피 종들의 초장 신장은 큰 변화가 없었으며, 관수기간 중 벼는 관수후 3일에 1.8배, 관수후 5일에 2.5배, 관수후 7일에 2.7배 정도의 신장률을 보인데 비하여 물피와 돌피는 1.1~1.3배, 식용피는 1.4~1.7배를 나타냄으로서 관수에 대한 저항도는 피에 비하여 벼가 월등히 높은 것으로 나타났다. 3. 관수 종료후 벼와 피의 초장의 생장 속도를 보면 벼는 완만하게 생장하는데 비하여 피종들은 관수 종료후에는 벼보다 급격히 초장이 크게 신장하였고, 피 종에 따라서는 식용피>돌피>물피의 순으로 크게 신장하였다. 4. 관수에 따른 벼와 피의 단백질 spots를 비교한 결과 벼의 잎 단백질 spots은 모두 감소하거나 없어졌지만 피종들의 단백질 spots이 더 선명하게 감소하거나 없어졌다.

Keywords

References

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