옥수수 교잡종 111종의 습해저항성과 생육특성을 규명하기 위하여 인공기상동에서 3엽기에 인공강우 조건(1일차 80 mm, 이후 50 mm, 온도 21±3oC) 에서 본 시험을 수행하였다.
조사항목은 생육특성으로서 지상부, 뿌리, 엽신의 건물중을 조사하였으며 식물체의 중심고, 간직경을 측정 하였다. 교잡종 중에서 62번이 간장이 가장 길었으며 96번이 가장 짧았다. 무게중심고는 96번이 가장 컸으며 88번이 가장 짧았다. 건물중은 59번이 가장 무거웠으며 25번이 가장 낮았다. 간직경은 91번이 가장 두꺼웠으며 24번이 가장 가늘었다. 엽신건물중은 42번이 가장 컸고 25번이 가장 낮았다. 뿌리 건물중은 16번이 가장 높았고 24번이 가장 낮았다. 엽신건물중은 85번이 가장 높았고 25번이 가장 낮았다. 각 항목별 상관을 구한결과 간직경, 초장, 뿌리건물중은 엽신건물중과 정상관을 나타냈고 간직경과 초장은 뿌리건물중과 정상관을 보였으나 초장과 무게중심고는 부의 상관을 보였다. 무게중심고와 간직경 또는 간직경은 뿌리건물중과 상관을 보이지 않았다.

A pot experiment was conducted in a phytotron to evaluate and select wet-resistant silage corn from 111 corn hybrids (CHs) under simulated heavy rain falls (80 mm for the 1st day and 50 mm from the 2nd till 11th day at 21±3oC) started at the 3rd leaf stage or 28 days after seeding. Growth related characteristics including dry weight of shoot, root, and leaf blade as well as leaf area, plant weight balance, and culm diameter were evaluated. Corn hybrid (CH) no.62 showed the tallest plant height and no.96 was the shortest. CH no.96 expressed the highest weight balance and no. 88 was the lowest. CH no. 59 gave the highest dry weight of shoot and no. 25 was the lightest. CH no.91 measured the thickest culm diameter at the basal 10 cm but no.24 was the thinnest. Dry weight of the basal 10 cm from culm was heaviest in no. 42 and lightest in no.25. Dry weight of root was highest in no.113 and lowest in no. 16. Dry weight of leaf area was heaviest in no.85 but lightest in no. 25. Analysis of coefficient of correlation positively connected culm diameter, plant height, and root weight to leaf area as well as culm diameter and plant height to root weight, while plant height and weight balance were negatively correlated. Weight balance to culm diameter or leaf area and culm diameter to root weight was not related.

• Young-Son Cho(Department of Agronomy, Gyeongnam National University of Science and Technology) | 조영손
• Byeong-Jin Lee(Department of Agronomy, Gyeongnam National University of Science and Technology) | 이병진
• Daniel Son(Agricultural Research Center for Climate Change, National Institute of Horticultural and Herbal Science, RDA) | 손다니엘
• Rashid Ismael Hag Ibrahim(Department of Horticulture, Gyeongnam National University of Science and Technology)
• Beom-Young Son(Division of Upland Crop Research, National Institute of Crop Science, RDA) | 손범영 Corresponding author