Yield and quality analysis of different southern fragrant Japonica rice varieties with different growth types
In order to select high-yielding,high-quality,and aromatic rice varieties suitable for cultivation in different ecological regions in southern China,this study extensively collected a variety of fragrant Japonica rice varieties cultivated in southern China and systematically investigated and compared their yield and quality among different types of fragrant Japonica rice.The results indicated that the yields of southern fragrant Japonica rice varieties with medium-maturing medium Japonica fragrant rice(MMMJ),late-maturing medium Japonica fragrant rice(LMMJ)and early-maturing late Japonica fragrant rice(EMLJ)were 8.07,9.78,and 9.89 t·hm-2,respectively.The head milled rice rates of the three growth types of southern fragrant Japonica rice varieties mentioned above were 49.11％,56.19％,and 60.20％,respectively.The chalkiness were 13.01％,17.90％,and 17.47％,respectively;The taste values were 62.26,75.07,and 78.84,respectively.The main component 2-acetyl-1-pyrroline(2-AP)content of the aroma substance was 105.73,123.63,and 177.78 ng·g-1,respectively.The yield,head milled rice rate,and taste value of EMLJ and LMMJ were significantly higher than those of MMMJ.The chalkiness of MMMJ was significantly lower than that of EMLJ and LM-MJ).The 2-AP content was highest in EMLJ,followed by LMMJ,and MMMJ.Using yield,taste value,and 2-AP con-tent as core indicators,K-Mean clustering analysis was used to analyze the differences in yield,taste value,and 2-AP content among varieties of southern fragrant Japonica rice in China.The yield was 9.96 t·hm-2,taste value was 82.00,and 2-AP content was 193.25 ng·g-1,which was determined as the indicator basis forjudging high-yield,high-quality,and strong aroma southern fragrant Japonica rice varieties.Therefore,referring to the above indicators,the MMMJ vari-eties Suxiangjing 3,Wuyu 0155,Wuyujing 195,etc.,the LMMJ varieties Jinxiangyu 1,Wuyujing 366,Nanjing 9108,etc.,and the EMLJ varieties Nanjing 46,Ningxiangjing 9,Zhexianghe 2,etc.,were determined to have higher yields,better quality,stronger aroma,and better overall performance.They were suitable for promotion and planting in corre-sponding ecological areas of southern Japonica rice regions in China.
国家科技期刊平台
NSTL
万方数据
