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《Journal of Henan Agricultural Sciences》 2018-07
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Identification of Agronomic Traits of Germplasm Resources of Early Japonica Rice in Cold Area and Its Relationship with Quality Traits

HU Yue;GUO Xiaohong;LI Meng;ZHOU Jian;JIANG Hongfang;XU Shengliang;XU Lingqi;WANG Hongyang;NA Yongguang;SU Xiaoyue;Lü Yandong;College of Agronomy,Heilongjiang Bayi Agricultural University/Key Laboratory of Varieties Improvement Cultivation of Crops in Cold Region of Heilongjiang,Provincial Department of Education;Rice Research Institute,Heilongjiang Academy of Land Reclamation Sciences;  
In order to promote the high quality breeding of early japonica rice in cold area,the main agronomic characters of 205 early japonica rice germplasm resources were classified and screened,and the relationship with quality traits was discussed. The results showed that the mid-low stem type varieties had better grinding quality and eating quality,short stem varieties had better appearance quality,the higher the plant height was,the higher the amylose content was,the lower the protein content was. The grain length of medium ear type varieties was shorter. The quality of the mid-long flag leaf type varieties was better; the short flag leaf type varieties had better taste quality. As the length of the flag leaf increased,the length of rice grain increased; chalky degree and chalky grain rates decreased. The appearance quality and taste quality of the upright type varieties were better,and the grain of flat type varieties was slender. The plant model of early japonica rice with high quality was that plant height was between 70. 0 cm and 90. 0 cm,the flag leaf length was between 20. 0 cm and 35. 0 cm,the ear length was mid-short,the flag leaf angle was 20° or less.
【Fund】: 黑龙江省自然科学基金面上项目(C2017046);; 国家重点研发计划项目(2016YFD0300104 2017YFD0300502-6 2016YFD0300504 2017YFD0100506);; 黑龙江省教育厅项目(12531451);; 黑龙江省农垦总局科研项目(HNK125B-08-21A HNK135-02-02);; 黑龙江八一农垦大学创新人才项目(CXRC2017001)
【CateGory Index】: S511.22
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