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2018 Volume 43 Issue 4
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FANG Li-kui CONG Yun-fei LIU Li HE Guang-hua LI Jie. Screening Test on Ratoon Rice Variety and Plant-Type Characteristics Analysis in Yuxi Valley[J]. Journal of Southwest China Normal University(Natural Science Edition), 2018, 43(4): 69-73.
Citation: FANG Li-kui CONG Yun-fei LIU Li HE Guang-hua LI Jie. Screening Test on Ratoon Rice Variety and Plant-Type Characteristics Analysis in Yuxi Valley[J]. Journal of Southwest China Normal University(Natural Science Edition), 2018, 43(4): 69-73.
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Screening Test on Ratoon Rice Variety and Plant-Type Characteristics Analysis in Yuxi Valley

  • Chongqing Municipal Agricultural Technology Extension Station; Chongqing Agricultural Broadcast and TV School; College of Agronomy and Biotechnology, Southwest University;

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  • The purpose of this research is to screen out elite ratoon rice varieties with high yielding to meet needs of local farmers and rice breeder.Thirteen rice varieties have been tested in field to compare the yield and analysis plant-type characteristics.The yields of Shenliangyou 5814 and Chuanxiangyou 178 are14 513.25 and 14 283.75 kg/ha, showing significant increase of 19.76%and 17.87%, respectively.Shenliangyou 5814 and Chuanxiangyou 178 have displayed the best comprehensive performance the former could be used as ratoon rice varieties.The results show that, as for 13 hybrid rice varieties, the plant height was101.50-126.00 cm, the flag leaf length is between 23.43-40.61 cm, the flag leaf width was 1.72-2.16 cm, the leaf basic angle of flag leaf is 12.00-23.75.In addition, the correlation analysis indicates that the rating rice yield had negative correlation with length width and leaf basic angle of the top-most three leaves.Top-most three leaves keeping upright posture in middle rice mature period, especially the flag leaf, are better to improve the population structure and germination of ratooning buds.
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Screening Test on Ratoon Rice Variety and Plant-Type Characteristics Analysis in Yuxi Valley

Abstract: The purpose of this research is to screen out elite ratoon rice varieties with high yielding to meet needs of local farmers and rice breeder.Thirteen rice varieties have been tested in field to compare the yield and analysis plant-type characteristics.The yields of Shenliangyou 5814 and Chuanxiangyou 178 are14 513.25 and 14 283.75 kg/ha, showing significant increase of 19.76%and 17.87%, respectively.Shenliangyou 5814 and Chuanxiangyou 178 have displayed the best comprehensive performance the former could be used as ratoon rice varieties.The results show that, as for 13 hybrid rice varieties, the plant height was101.50-126.00 cm, the flag leaf length is between 23.43-40.61 cm, the flag leaf width was 1.72-2.16 cm, the leaf basic angle of flag leaf is 12.00-23.75.In addition, the correlation analysis indicates that the rating rice yield had negative correlation with length width and leaf basic angle of the top-most three leaves.Top-most three leaves keeping upright posture in middle rice mature period, especially the flag leaf, are better to improve the population structure and germination of ratooning buds.

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