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- Title
优质籼稻剑叶 SPAD 值与稻米品质相关性研究.
- Authors
王志东; 陈宜波; # 龚蓉; 周少川; 王重荣; 李宏; 黄道强; 周德贵; 赵雷; 潘阳阳; 杨义强; 李晓芳
- Abstract
[Objective]To reveal the relationship between SPAD value of flag leaf and rice quality characters in key growth period of high quality indica rice, and to lay a theoretical basis for breeding and production of high eating quality indica rice in the future.[Method]Twelve good quality indica rice varieties including Meixiangzhan 2, Huanghuazhan and Wushansimiao were used to determine the rice quality characters, such as cooking and eating quality, starch RVA and the SPAD values of flag leaf at different growth stages. And the correlation between SPAD value and rice quality characters were further analyzed.[Result]The SPAD value of flag leaf in waxy ripening stage and yellow ripening stage had significantly or extremely significantly positive correlation with rice eating value, peak viscosity and breakdown value, whereas an extremely significantly negative correlation with rice protein content.[Conclusion]The correlation coefficients between SPAD value of flag leaf in yellow ripening stage and food taste value and protein content of indica rice are greater than those in waxy ripening stage. The higher SPAD value in yellow ripening stage, the lower protein content of rice and the better eating quality. The SPAD value of flag leaf in yellow ripening stage can be used to predict the eating value and protein content of indica rice. The linear fitting equation between SPAD value (x) of flag leaf in yellow ripening stage and eating value (y) of rice is y=0.0901x+65.76(R2 =0.687); the linear fitting equation with protein content (y) is y=-0.098x+9.217(R2 =0.602).
- Publication
Chinese Journal of Rice Science, 2021, Vol 35, Issue 1, p89
- ISSN
1001-7216
- Publication type
Article
- DOI
10.16819/j.1001-7216.2021.0508