| Shanlan rice is a special kind of upland rice germplasm resource in Hainan province. The agronomic and quali⁃
ty traits of 22 Shanlan rice varieties were studied comprehensively through correlation method, grey relational analysis meth⁃
od, etc. The results showed that: (1) the panicle length, seed setting rate, 1000-grain weight, brown rice rate, white rice rate,
gel consistency and alkali value of Shanlan rice were generally higher, the moisture content was generally lower, the amylose
content of glutinous varieties was not more than 1.6%, and the gel consistency of glutinous varieties was 100; the variation
coefficient of effective spike number, total grain number, filled grain number, chalkiness grain rate, chalkiness degree and
transparency level of Shanlan rice were higher indicating that the genetic diversity is rich; the agronomic traits included plant height, effective spike number, 1000-grain weight had significant or extremely significant linear relationship with the
main qualitative traits; the grey relational grade of panicle length, 1000-grain weight, seed setting rate with the main quali⁃
ty traits was higher, the grey relational grade of effective spike number with the head rice rate was higher, the grey relation⁃
al grade of plant height with the grain length (length-width ratio), gel consistency, brown rice rate, head rice rate was high⁃
er. The results of this study provide references for the breeding superior varieties of Shanlan rice and the analysis of the
correlation between different rice traits. |
