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2017 Vol.26, Issue 2 Preview Page
Seedling Qualities of Watermelon as Affected by Different Raising Seedling Period and Growth Characteristics after Planting

육묘 기간에 따른 수박의 묘 소질과 정식 후 생육특성

Ba-Ul Ko1
,
Jong Hyang Bae12
,
Seung Jae Hwang3
,
Ho Cheol Kim12*
고 바울1
,
배 종향12
,
황 승재3
,
김 호철12*
1Department of Horticulture Industry, Wonkwang University, Iksan 54538, Korea
2Institute of Life Science and Natural Resources, Wonkwang University, Iksan 54538, Korea
3Department of Horticulture, Division of Applied Life Science, Graduate School, Gyeongsang National University, Jinju 52828, Korea
1원광대학교 원예산업학과
2원광대학교 생명자원과학연구소
3경상대학교 응용생명과학부 원예학과
*Corresponding author: go-hc@hanmail.net
30 April 2017. pp. 56-63
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Abstract

This study was carried out to establish qualities of watermelon seedling (Citrullus lanatus) according to raising seedling period (RSP; 40, 45, 50, 55, 60, and 65 days) and was carried out to investigate growth characteristics after planting of the seedlings. In seedling qualities according to RSP, Plant height, stem diameter, leaf area of seedling with RSP 65 treatment were significantly increased. Fresh and dry weight in the above of corp showed a significant difference among the seedlings with RSP 40-45, RSP 50-60 and RSP 65 treatment, and that in of root were significantly higher in the seedlings with RSP 40, 45, 65 treatments than with other RSP treatments. S/R ratio was lower in the seedlings with RSP 40 and 45 treatments than with other RSP treatments. RSP affected to the leaf area and S/R ratio of seedling. After 11 weeks after planting of a various seedlings, except that height and node number of plant with 45 RSP treatment was lower than other RSP treatments, other growth characteristics were not significantly different amon RSP treatments. Leaf area, fresh weight, dry weight and S/R ratio were lowest in plant with RSP 65 treatment. Relative growth rate and net assimilation rate of planted watermelon tended to decrease and leaf area ratio was continuously increased until 9th week in the all treatments. The lighter and heavier fruit were produced in plants with RSP 40 and RSP 65 treatments (9.7 kg and 9.9 kg) and in RSP 50 and RSP 55 treatments (both 11.0kg), respectively. Fruit sugar contents was highest in fruit with RSP 45 treatment, and was lowest in RSP 50 and RSP 60 treatments. RSP showed a polynomial regression relation with the increment of fruit weight and the weight of harvested fruit. Considering the increment and weight of fruit, the most for RSP of watermelon seedling for planting were 50-55 days.

Keywords
leaf area ratio
net assimilation rate
relative growth rate

본 연구는 육묘 일수에 따른 수박 묘의 소질 차이와 그 묘의 소질 차이가 정식 후 수박의 생육 및 과실 특 성에 미치는 영향을 구명하고자 수행하였다. 육묘 일수 에 따른 묘의 소질에서 초장, 경경 및 엽면적은 65일 묘에서는 유의하게 높았다. 묘의 지상부 생체중 및 건 물중은 40-45일 묘, 50-60일 묘, 65일 묘 간 유의한 차 이를 나타내었다. 그리고 지하부는 65일 묘와 40-45일 묘에서 유의하게 높았다. 묘의 S/R율은 40-45일 묘에서 유의하게 낮았다. 육묘 일수는 묘의 엽면적 및 S/R율과 정의상관성을 나타내었다. 육묘 일수에 따른 수박 묘의 정 식 11주 후 식물체의 초장 및 마디수는 45일 묘를 정식한 식물체에서 낮았던 것을 제외하고 처리들 간 유의한 차이 가 나타나지 않았다. 식물체의 엽면적, 생체중, 건물중, S/ R율은 65일 묘를 정식한 식물체에서 가장 낮았다. 정식 후 상대생장률과 순동화율은 모든 처리구들에서 낮아지는 경향을 나타내었다. 그리고 엽면적률은 모든 처리구에서 정식 후 9주째까지 상승하였다. 수확한 과실의 무게는 40 일과 65일 묘에서 생산된 과실에서 각각 9.7kg과 9.9kg으 로 가벼웠고, 50일과 55일 묘에서 11.0kg으로 무거웠다. 당도는 45일 묘에서 생산된 과실에서 12.1Brix로 가장 높 았고, 50일과 60일 묘에서 11.18Brix로 가장 낮았다. 착과 후 육묘 일수는 과실 비대량과 성숙 과실 무게에 유의한 다항 회귀 관계를 나타내었다. 따라서 과실 비대량과 성숙 과 무게를 고려 할 때 수박의 적합한 육묘 일수는 50-55 일 범위로 생각된다.

키워드
상대생장률
순동화율
엽면적률
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Information
  • Publisher :The Korean Society for Bio-Environment Control
  • Publisher(Ko) :(사)한국생물환경조절학회
  • Journal Title :Protected Horticulture and Plant Factory
  • Journal Title(Ko) :시설원예ㆍ식물공장
  • Volume : 26
  • No :2
  • Pages :56-63
  • Received Date : 2016-09-08
  • Revised Date : 2016-12-19
  • Accepted Date : 2017-03-07
  • DOI :https://doi.org/10.12791/KSBEC.2017.26.2.56
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