The objective of this study was to evaluate the drought tolerance in maize seedling using leaf rolling. Nineteen maize resources, seven Nested Association Mapping parents lines, six Korean commercial cultivars, and six Southeast Asia commercial cultivars, were used to examine drought tolerance. The leaf rolling scores were measured on each leaf in three stress conditions with moderate drought (10%), severe drought (7%), and extreme drought (5%). Generally leaf rolling score of seedlings increased at the lower soil water potentials (5~7%). As a result, drought-tolerant cultivars showed lower leaf rolling score (below 2.5) than the drought sensitive cultivars (above 3.5). Nine varieties, NK4043, CML322, DK9955, NK4300, Ki11, DK8868, CML228, LVN99, and LVN10, have been selected for tolerance to drought stress. These results suggest that the leaf rolling score in maize seedling has been made available to indirect index for drought tolerance.

재료 및 방법
  옥수수 품종
  발아 및 환경
  토양수분함량
  유묘기 한발처리
  잎말림 평가
  잎말림 회복능력 평가
 결과 및 고찰
  잎말림 현상에 따른 한발 내성 검정
  한발 스트레스 수준에 따른 잎별 잎말림 현상
  유묘기 잎말림 단계별 회복능력 평가
 적 요
 사 사
 인용문헌(REFERENCES)

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• 김경희(동국대학교 생명과학과) | Kyung-Hee Kim
• 김효철(동국대학교 생명과학과) | Hyo Chul Kim
• 문준철(강원대학교 농업생명과학연구원) | Jun-Cheol Moon
• 김재윤(고려대학교 생명과학대학 생명공학부) | Jae Yoon Kim
• 백성범(국립식량과학원 전작과) | Seong-Bum Baek
• 권영업(국립식량과학원 전작과) | Young-Up Kwon
• 이병무(동국대학교 생명과학과) | Byung-Moo Lee Corresponding author