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Analysis of Growth Characteristics and Yield Components According to Rice Varieties Between on Irrigated and Partially Irrigated Rice Paddy Field
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  • Journal title : KOREAN JOURNAL OF CROP SCIENCE
  • Volume 61, Issue 1,  2016, pp.17-24
  • Publisher : The Korean Society of Crop Science
  • DOI : 10.7740/kjcs.2016.61.1.017
 Title & Authors
Analysis of Growth Characteristics and Yield Components According to Rice Varieties Between on Irrigated and Partially Irrigated Rice Paddy Field
Kim, Tae-Heon; Hur, Yeon-Jae; Oh, Seong-Hwan; Lee, Ji-Yoon; Cho, Jun-Hyun; Han, Sang-Ik; Lee, Jong-Hee; Baek, Dongwon; Song, You-Chun; Choi, Weon-Young; Nam, Min-Hee; Park, Dong-Soo; Kwon, Yeong-Up; Shin, Dongjin;
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 Abstract
Drought caused by global climate change is one of serious problems for rice cultivation. However, it was little reported the impact of drought on rice cultivation in Korea. In here, to assess impact of drought on rice varieties in Korean climate condition, growth characteristics and yield components of rice were compared on irrigated and partially irrigated rice paddy field. First, we have chosen 11 rice varieties including `Saeilmi` and `Shindongjin` which are widely cultivated in Korea. For partially irrigated rice paddy treatment, we have withheld irrigation from 25 days after transplanting and water supply was totally dependent on rainfall for rice cultivation. When we examined early plant height and tiller number of these varieties on partially irrigated rice paddy were reduced 1.6% to 18.4% and 10.4% to 33.1%, respectively, and these reduction rate were highly correlated with yield loss in our experimental conditions. Among rice yield components, panicle number was decreased 10.5% to 30.1% according to rice varieties and reduced panicle number was highly correlated with yield loss. Grain number per panicle, grain filling rate and 1,000 seeds weight did not have correlation with yield loss of rice varieties. These result means that growth stage, especially the tillering stage, is seriously affected by drought on rice cultivation in Korea. And we suggest that `Saeilmi`, `Ilmi` and `Ilpum` are good for rice cultivation on drought prone rice field in Korea.
 Keywords
Drought;Rainfed rice paddy;Rice;Yield loss;
 Language
Korean
 Cited by
1.
Drought-tolerant QTL qVDT11 leads to stable tiller formation under drought stress conditions in rice, Plant Science, 2017, 256, 131  crossref(new windwow)
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