The Multi-Environment Yield Trials of Semi-dwarf and Non-photoperiod Sensitivity in Glutinous Rice Lines in Dry Season, 2014

Abstract

The comparative trials on yield and agronomic characteristics of 3 semi-dwarf and non-photoperiod
sensitive glutinous rice lines derived from genetic improvement by backcrossing and molecular
markers assisted in selection were carried out with 2 check varieties; Sanpatong 1 and RD14 in 2 sites;
Mae Sai and Phan districts in Chiang Rai province. Randomized Complete Block Design with 4 replications
was used. Seeds were grown on January 11 and seedlings were transplanted in Mae Sai and Phan Districts
on February 15 and 18, 2015, respectively. Results of the combined analysis of variance indicated that the
influence of environments on yield, days to flowering, plant height, length and thickness of brown rice were
significant while, it's effected on the number of panicles/hill and width of brown rice were not significant.
Genotype or variety had highly significant effected on yield and all agronomic traits (p<0.01). The
interaction between genotype and environmental condition had significant influence on the days to

flowering, width, and thickness of brown rice however, it effected on yield, plant height, number of panicles/
hill, and length of brown rice were not significant. Average yield of 5 glutinous rice lines in Mae Sai district
was higher than that of Phan district which yield were 1,084 and 780 kg/rai, respectively. MJUG04002-927
gave a highest average yield of 1,018 kg/rai, that was not significant different from Sanpatong 1 and RD14
which yield were 1,014 and 962 kg/rai, respectively.