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Original Articles

Development and Comparison of Growth Regression Model of Dry Weight and Leaf Area According to Growing Days and Accumulative Temperature of Chrysanthemum “Baekma”

국화 “백마”의 생육 일수 및 누적 온도에 따른 건물중과 엽면적의 생장 회귀 모델 개발 및 비교

Sungjin Kim1
,
Jeonghwan Kim2
,
Jongseok Park3*
김 성진1
,
김 정환2
,
박 종석3*
1Graduate Student, Department of Horticultural Sciences, Chungnam National University, Daejeon 34134, Korea
2Graduate Student, Department of Computer Engineering, Chungnam National University, Daejeon 34134, Korea
3Professor, Department of Computer Engineering, Chungnam National University, Daejeon 34134, Korea
1충남대학교 농업생명과학대학 원예학과 대학원생
2충남대학교 공과대학 컴퓨터공학과 대학원생
3충남대학교 농업생명과학대학 원예학과 교수
*Corresponding author: jongseok@cnu.ac.kr
30 October 2020. pp. 414-420
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Abstract

This study was carried out to investigate the growth characteristics of standard chrysanthemum ‘Baekma’, such as fresh weight, dry weight, and leaf area and to develop prediction models for the production greenhouse based on the growth parameters and climatic elements. Sigmoid regressions models for the prediction of growth parameters in terms of dry weight and leaf area were analyzed according to the number of the day after transplanting and the accumulate temperature during this experimental period. The relative growth rate (RGR) of the chrysanthemum was 0.084 g·g-1·d-1 on average during the period.The dry weight and leaf area of 'Beakma' increased exponentially according to the number of day after transplanting and the accumulated temperature, in the case of dry weight increased by an average of 39.1% until 63 days (accumulated temperature of 1601℃), after that dry weight increased by an average of 7.4% before harvest. The leaf area increased by an average of 63.3% until the 28th day after transplanting, and by an average of 6.5% until the 84th day before flower bud differentiation occurred, and increased by an average of 10.6% before harvest. This experiment can be used as a useful data for establishing a cultivation management system and a planned year-round production system for standard chrysanthemum “Baekma”. To make a more precise growth prediction model, it will need to be corrected and verified based on various weather data including accumulated irradiation.

Keywords
accumulate temperature
day after transplanting
dry weight
leaf area
the relative growth rate
standard chrysanthemum

본 연구는 대륜 국화 ‘백마’의 생육 특성인 생체중, 건물중, 엽면적을 조사하여, 생장 및 기후요소에 따른 생장 예측모델 개발을 위하여 수행되었다. 정식후 일수 및 누적온도에 따른 국화의 건물중 및 엽면적 분석에 기반한 ‘백마’의 생장예측을 위한 시그모이드 회귀모델을 개발하였다. ‘백마’의 건물중 상대생장률(RGR)은 재배기간 평균 0.084 g·g-1·d-1이었다. 정식 후 재배 기간에 따른 건물중에 대한 상대 생장률은 정식 초기부터 단일처리 전까지 높았으며 최고 0.133 g·g-1·d-1까지 증가하였고, 63일째 단일처리가 시작된 후 수확 시기에서는 0.030 g·g-1·d-1으로 감소하는 경향을 보였다. 누적온도에 따른 국화의 건물중, 엽면적에 대한 생장 모델(sigmoid 곡선)을 개발하였다. 정식 후 일수와 누적온도에 따른 ‘백마’의 건물중 및 엽면적은 지수함수적으로 증가하였으며, 건물중의 경우 63일(누적온도 1601℃)까지 평균 39.1%씩 증가하였고, 이후 평균 7.4%씩 증가하였다. 엽면적의 경우 정식 후 28일차 까지 평균 63.3%씩 증가하였고, 화아분화가 발생하기 전인 84일차까지 평균 6.5%씩 증가하였으며 화아 분화가 발생하기 전 84일까지 평균 6.5%로 증가했고, 이후 수확 전까지 평균 10.6%씩 증가하는 경향을 보였다. 본 실험은 충남지역에서 대륜 국화 ‘백마’의 재배관리 체계와 계획적 연중 생산 체계를 구축하는데 유용한 자료로 활용될 수 있다. 보다 정밀한 생육 예측 모델을 만들기 위해서는 누적 일사량을 포함한 다양한 기상자료를 바탕으로 하여 교정 및 검증이 필요하다.

키워드
건물중
엽면적
상대생장률
누적일수
누적온도
스탠다드 국화
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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 : 29
  • No :4
  • Pages :414-420
  • Received Date : 2020-09-02
  • Revised Date : 2020-09-29
  • Accepted Date : 2020-10-06
  • DOI :https://doi.org/10.12791/KSBEC.2020.29.4.414
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