The Heading Response and Characterization of the Adaptable Heading Ecotypes of Korean Rice Varieties in Dandong,  China

Woonho Yang; Hongguang Ju; Jeong-Ju Kim; Areum Han; Jung-Wook Yang; Eun Young Kim; Shingu Kang; Dae-Woo Lee; Mi-jin Chae; Moung Na Shin; Dongchun Jin; Piao Jin; Jichun Wang; Zhu Feng

doi:10.7740/kjcs.2023.68.3.106

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2023 Vol.68, Issue 3 Preview Page Next Page

The Heading Response and Characterization of the Adaptable Heading Ecotypes of Korean Rice Varieties in Dandong, China 중국 단동 지역에서 국내 벼 품종의 출수 반응과 적응 출수생태 특성

1 September 2023. pp. 106-113

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Abstract

We examined the heading responses of rice varieties over two years in Dandong, China to select the varieties that are adaptable to the bordering northwestern plains of North Korea. Dandong had slightly lower mean temperature than Sinuiju, North Korea but slightly higher than Supung, but it had almost the same day-length as the two regions in North Korea. In the two experimental years and two transplanting-date treatments, eight varieties (Jinbuol, Baegilmi, Joun, Jinok, Jopyeong, Jinbu, Sanhomi, and Odae) from South Korea and five varieties (Olbyeo2, Sonbong9, Onpo1, Gilju1, and Pyongdo5) from North Korea reached the heading stage not later than the latest heading dates of Dandong domestic varieties and the safe marginal heading dates of Dandong. We examined the basic vegetative phase (BVP), photoperiod-sensitivity (PS), and thermo-sensitivity (TS) of rice heading in a phytotron study to characterize the heading ecotypes of rice varieties adaptable to Dandong. For the rice varieties grown in Dandong experimental field, number of days to the heading stage was highly positively correlated with PS and, except middle and mid-late maturing three varieties, it was significantly positively correlated with BVP. Two-dimensional distribution plotting revealed that both 35 days or less BVP and 25 days or less PS were the characteristic heading ecotypes of the rice varieties adaptable to Dandong.

Keywords

Dandong

ecotype

heading

rice

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Information

Publisher :The Korean Society of Crop Science
Publisher(Ko) :한국작물학회
Journal Title :The Korean Journal of Crop Science
Journal Title(Ko) :한국작물학회지
Volume : 68
No :3
Pages :106-113
Received Date : 2023-07-31
Revised Date : 2023-08-10
Accepted Date : 2023-08-11
DOI :https://doi.org/10.7740/kjcs.2023.68.3.106

The Korean Journal of Crop Science ISSN:0252-9777(Print) 2287-8432(Online) 한국작물학회지

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