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논문 기본 정보

자료유형
학술저널
저자정보
Yeo-Tae Yun (Chungnam Agricultural Research and Extension Services) Chong-Tae Chung (Chungnam Agricultural Research and Extension Services) Jae-Chul Lee (Chungnam Agricultural Research and Extension Services) Young-Ju Lee (Chungnam Agricultural Research and Extension Services) Han-Jung Na (Chungnam Agricultural Research and Extension Services) Kwang-Won Lee (Chungnam Agricultural Research and Extension Services) Young-Hwan Yoon (Chungnam Agricultural Research and Extension Services)
저널정보
충남대학교 농업과학연구소 Korean Journal of Agricultural Science 農業科學硏究 第42卷 第3號
발행연도
2015.9
수록면
151 - 158 (8page)

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This study was conducted to know the variation and relationship of rice grain quality and starch pasting properties by transplanting times. Two early maturing rice cultivars which accounted for the most area of early maturing rice cultivar in Chungnam province were used. The experiment was laid out in a split-plot design with 3 replications. The main plot consisted of three transplanting times viz. early (April 25), ordinary (May 25) and late (June 25) with sub-plots containing two cultivars. According to the transplanting times, most of rice grain quality and starch pasting properties showed significant difference and Joami showed higher grain quality than Unkwang in all transplanting times. Especially, rice grain quality was improved when transplanted late, showing high head rice and glossiness of cooked rice due to the lower mean temperature during grain filling stage. Glossiness of cooked rice was positively correlated with head rice ratio, amylose content and setback value, and negatively correlated with chalky rice ratio and protein content. The highest positive and negative correlation were observed between breakdown value and peak viscosity (r = 0.98**), and breakdown and setback (r = -0.94**), respectively. These results provide some information for rice researchers and producers producing cultivars with an improved quality, suggesting that rice quality is highly influenced by temperature at grain filling stage, and transplanting times is crucial in improving rice quality. In addition, starch pasting properties are useful for determining rice quality because rice grain quality and starch pasting properties are dependent on each other.

목차

Abstract
I. Introduction
II. Materials and Methods
III. Results and Discussion
IV. Conclusions
References

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