Selection of the Korean Rice Cultivars Having Adaptable Heading Characters in Subtropical Regions

서지정보

ㆍ발행기관 : 한국국제농업개발학회 ㆍ수록지정보 : 한국국제농업개발학회지 / 29권 / 4호
ㆍ저자명 : Woon-Ha Hwang, Seung-Hyeon Ahn, Jae-Heok Jeong, Han-Yong Jeong, Hyen-Seok Lee, Jong-Tak Yoon, Gun-Hwi Lee, Kyung-Jin Choi

목차

Introduction
Material and method
Plant materials and growth conditions
Results and Discussion
Basic vegetative phase of each material
Temperature effect on sensitive and reproductivestage
Selection of materials showing stable heading habitin subtropical regions
적 요
ACKNOWLEDGMENTS
REFERENCES

영어 초록

Since Japonica rice is recognized as the premium rice in some subtropical region such as Philippines, the development of new cultivar adaptable in subtropical region has been conducting. However typical Japonica rice show earlier flowering in subtropical region due to the short day length and high temperature conditions. In such a condition, it is difficult to secure enough yields. Therefore it is need that selection of Japonica cultivar showing suitable heading characters in subtropical region. Here we try to check the basic vegetative phase and heading sensitivity on temperature condition using 37 kinds of Korean cultivars. BVP is between 14 to 39 days and 37% of cultivar had basic vegetative phase between 26 to 30 days. When temperature became lower on sensitive and reproductive stage, heading was more delayed. However the 24oC condition showed the greatest impact on heading delay among temperature condition. Among cultivars, 56% of cultivars have basic vegetative phase over 25days.We checked temperature effect on heading especially sensitivity stage in those materials. Joun, Manho, Joan and Cheonga showed stable heading date under different temperature conditions. With this data, we suggest that Joun, Manho, Joan and Cheonga could be a good cultivar in subtropical region in heading characters.

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